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acpi.sys+0x1af7c consuming 100% CPU on a core/System process consuming 100% CPU on a core

Q: acpi.sys+0x1af7c consuming 100% CPU on a core/System process consuming 100% CPU on a core

This appears to be a long-running, common problem with Windows 7 (and likely more recent OS versions).
It also appears to be an on-going problem, and needs to be actually fixed by Microsoft.
At some apparently random time after the system boots, one of the CPUs cores will become occupied at nearly 100% by a thread associated with something similar to "APCI.sys+0x1af7c". With one core completely occupied by this thread and
its associated interrupts, the whole system becomes sluggish.
While this wild thread/interrupt series appears to be random, it is more likely to occur around the time that a cell phone is plugged or unplugged into the PC via a USB cable or possibly when using Firefox and streaming video from sources such as CNN or
YouTube (it does not appear to be a problem when streaming from Netflix, Amazon, HBO, and the like).
There are two ways to work-around this:
1. Reboot your machine. The problem will come back at some point, at which time you can reboot again. This solution harkens back to one of Bill Gates' signature accomplishments from Windows 1, where he got people to believe it was acceptable
to hit the reset button on your computer multiple times a day. Yes, the problem will keep coming back, but at least for some random period of time after you reboot your PC, it will not be sluggish.
2. Disable "Wake on..." features from your wired network card (not wireless network), whether or not your PC is actually connected with the wired network card. This fix may be a permanent solution to the problem, if your PC does not
need the "Wake on..." functionality--which is probably the case for most home PCs, but less likely to be the case in corporate environments where the IT infrastructure performs remote backups and updates of PCs and need to use the "Wake on..."
feature to effect those backups and updates.
Here are the steps to perform work-around #2. Note that if you follow this procedure when your PC is in the bad state, you will see immediate results without having to reboot. Also, if you follow this procedure, you might not want to have any
other applications running so that only 1 core is being consumed and the other cores are effectively idle--this makes it easier to tell if your wild thread problem is solved:
A. Bring up the Device Manger (Start Menu, type "Device Manger" into the search box at the bottom of the Start Menu and hit the Enter key. The Device Manager will start up.).
B. In the Device Manager Window, scroll down to find the "Network adapters" entry, and click on the "+" icon to expand the list of adapters.
C. Find the wired network adapter. There may be several network adapters listed. The wireless adapters will have 'wireless' in their name, and some will have 'Virtual' in their names--those can be ignored. There should be only one
or two network devices without "wireless" or "Virtual" in their names. An example might be "Intel(R) Ethernet Connection I217-LM", but there are many different models of network adapters, so yours will likely be some other
D. Right-click on your wired network adapter and select "Properties".
E. In the Properties dialog, select the tab labeled "Power Management".
F. Find the Options labeled similar to "Wake on...", which might include "Wake on Magic Packet", "Wake on Pattern Match", "Wake on Magic Packet from power off state". These are likely in a box titled "Wake
on LAN".
G. Uncheck all of the "Wake on..." options.
H. Click on "OK" (or "Apply").
If you are performing this procedure while the wild thread is eating up one of your CPUs cores, you should immediately see the CPU use on that core drop to zero. By immediately, I mean within 5 seconds of clicking on "OK". You do not
need to reboot to see the wild thread go back to idle.
Note that this fix has had no ill effect on my PC since doing it, whether I'm using the wired network or wireless network card.

Since this fixed the problem for me (and hundreds of other people as well), and since this problem comes on randomly, it is pretty clear that this is a software bug in the System process and/or the wired network driver (since the wild thread happens no matter
which wired network card is in the PC), and this is clearly a problem that Microsoft should be able to fix. It's embarrassing that this problem has been around since at least 2009 (over 6 years!). It's likely some sort of stuck/unclear interrupt,
and I can't believe it's that difficult to find and fix.

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Preferred Solution: acpi.sys+0x1af7c consuming 100% CPU on a core/System process consuming 100% CPU on a core

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)


This just started in the past few days.

Resource Monitor says that the svchost.exe (netsvcs) process has 39 threads and as mentioned it is using 25% of the CPU. Not when I first boot up, but after about 30 minutes of Chrome (which is the only application I have running).

I do know how to chase this issue down any further.

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I have been researching this problem on some of the other threads and I have downloaded PROCESS EXPLORER but I can't seem to locate what program is causing the CPU to max out. Here is the latest Hijack file and if anyone can help I would be so grateful. I don't know what else to do.

Logfile of HijackThis v1.99.1
Scan saved at 3:22:51 PM, on 5/24/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16441)

Running processes:
C:\Program Files\Common Files\AOL\ACS\AOLAcsd.exe
C:\Program Files\Common Files\AOL\TopSpeed\2.0\aoltsmon.exe
C:\Program Files\Common Files\AOL\TopSpeed\2.0\aoltpspd.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Program Files\Real\RealPlayer\RealPlay.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Lexmark 7100 Series\lxbxmon.exe
C:\Program Files\Co... Read more

A:SVCHOST.exe and/or SYSTEM IDLE PROCESS consuming 99% CPU[moved from XP for Security

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resantly in my Dell n5110 windows 7 64 ACPI.sys process consuming 25% cpu constantly.it has made my lap top very slow.plz hellp me to figure out this.

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Since a few weeks I encountered some slowdowns mainly in games. No audio dropdowns or something you see. Only low fps! Edit: This only happens in a few games like: TF2 (when I choose the sniper class, I think), BFBC2,Crysis
I searched in the taskmanager and saw that System was taking up much but there was something that took much more, but wasn´t viewable in the task manager.
So I used Process Explorer from Sysinternals. I saw it was Hardware Interrupts. In the System process I searched under Threads and I saw this little .....:
Then the big search began. I found a huge mass at google and I read many of them. But nothing works.
The only thing I didn´t tested was disconnecting the AVM USB Wlan stick. Then reboot and then test with a game. (Will do this some time)
This problem starts when playing some games. Then it persist up to 30-120 minutes after closing the game or reboot...
What I tested so far was:
-Disabling Audio Controller. In Device Manager and BIOS
-Disabling LAN Controller.             "
-Disabling and disconnecting any device that isn´t something like a mouse or keyboard.
-CHecked temps of graphics card and CPU. Graphics card fans go up to 55% (Idle 40%) and raise to a stable temp of 72C.
-Checked LatencyMon for DPC and ISR. And now a fun question: What got some huge amoutn of them? ACPI.sys ._.
-Thought about... Read more

A:ACPI.sys is consuming much CPU usage and high DPC ISR count

Hello and thanks for your reply.
ACPI.sys is not only there for CPU throttle and disabling windows CPU throttling doesn´t made any difference.
Also the cpu NEVER got higher than 70C
CPU Throttling also works normal if not all power is needed :)
BUT. I finally made it.
Opened the PC and cleaned everything. The whole cpu fan was covered(The metal things below the fan) with dust. I cleaned everythign and looked for all cables.
Then I closed the PC.
I also made this registry key:
There I created a 32DWORD: "Attribute" with the hex value of "100"
This was taken from a bug fix for WinXP and Server 2003 which should fix the problem for high DPC cause.
And finally: It is done! I finally can use my computer with happines :)
I hope this helps some people :D

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i'm having this issue for a couple days when i installed an SSD in my Samsung Series 7 laptop.

I reinstalled windows 8.1 twice using all drivers provided from manufacter, then tried update all independtly, installed and reinstalled several times, nothing changed, always system.exe uses ~15% CPU (acpi.sys + interrupts.exe using 1 Core at 100%).

One thing i noticed:

1- when i insert a disk in optical drive system.exe goes 0% (no more acpi.sys) and interrupts.exe goes to ~0.5%
2- when i eject the disk from optical drive again system.exe uses ~15% (acpi.sys + interrupts.exe using 1 Core at 100%)

So i ran 2 xperf (one with disk in optical drive, one without disk in optical drive)
with disk inserted: https://www.dropbox.com/s/wa5rcs07anzha2z/with_disk_inserted.zip?dl=0
without disk inserted: https://www.dropbox.com/s/511ojrmbgvj8pnt/without_disk_inserted.zip?dl=0
Why is this happening?

A:System.exe uses ~15% CPU (acpi.sys + interrupts.exe using 1 Core at 100%)


thank you very much for your reply.

well, i don't know how the problem gone away...but it did. for one week i kept a disk inside optical drive to prevent system.exe use cpu...but today i was checking some CDs, so i inserted like 5 cds in a row and now i noticed that without disk there is no
system.exe using 15% of the cpu. now everything is normal...don't know what was causing the issue but for now it's ok.
i still have two other problems with my pc. since when i installed the SSD, my computer sometimes freezes for 30 seconds...already made a research about the problem and none of the solution people talk about in internet seems to solve my problem...this is
what appears in event log when it freezes for 30 seconds:

I have lastest AHCI drivers, i do not have intel rapid techonologic installed (if installed same freezing, but warnings are diferent: storeahci + disk warnigs). What can be the problem? can't i have a ssd in my pc?

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I noticed that the hard drive was laboring on my Gateway Dual Core system running XP Media Edition. Task Manager shows a process calle aro.exe running at three listed locations, consuming over 90% of the CPU. I deleted each successfully, with no apparent complications, and the system ran dramatically faster until Task Manager showed that ARO.exe was running again. Does anyone have any idea what this process is, and why it gets initiated, especially multiple times?

A:Solved: The all-consuming process for Windows XP

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I am using windows automation software(.net based) from a vendor. The software has a server and agent component both installed on same machine and server assigns job to the agent at pre-defined schedule.

However each time the server starts new task, the server is spiking the CPU to 100% freezing system for 4-5 sec and it drops back to normal.

This behavior is happening only while using oracle as the back end database for the server.It does not happen when using SQL server. While the task is running the process is continuously querying and updating the oracle database but we don't have any performance issues.

Also if I reduce the processor affinity from 4 cores to 3 cores, the CPU does not even touch 50% and utilization is very normal.

We have engaged the vendor to investigate this.

Meanwhile can anyone advice some idea that I can try out something figure out root cause for this behavior? We are using windows 7 64 bit.

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I was having problems with all the memory being consumed and the system becoming unresponsive. After running a bunch of tools and coming up mostly empty I finally just did a clean re-install from the D: recovery partition (formatting the C: partition). Unfortunately it must have infected my D: recovery partition or something else since it is still here.

After startup one of the svchost processes comsumes memory until it uses over 1GB and there is none left. Then the system is totally unresponsive. If I end the process before it completely cripples the system it will respawn after a short time again. I used sysinternals tools to look at that svchost process and it seemed to be filled with instances of cookies files?!

DDS (Ver_2011-08-26.01) - NTFSx86
Internet Explorer: 6.0.2900.2180
Run by HP_Owner at 23:47:29 on 2012-03-13
Microsoft Windows XP Home Edition 5.1.2600.2.1252.1.1033.18.895.397 [GMT -5:00]
============== Running Processes ===============
C:\WINDOWS\system32\svchost.exe -k DcomLaunch
C:\WINDOWS\System32\svchost.exe -k netsvcs
C:\Program Files\SUPERAntiSpyware\SASCORE.EXE
c:\Program Files\Common Files\LightScribe\LSSrvc.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\... Read more

A:svchost process keeps consuming memory till all used up

Hello and Welcome to the forums! My name is Gringo and I'll be glad to help you with your computer problems. Somethings to remember while we are working together.Do not run any other tool untill instructed to do so!please Do not Attach logs or put in code boxes.Tell me about any problems that have occurred during the fix.Tell me of any other symptoms you may be having as these can help also.Do not run anything while running a fix.Do not run any other tool untill instructed to do so!Click on the Watch Topic Button and select Immediate Notification and click on proceed, this will help you to get notified faster when I have replied and make the cleaning process faster.Please print out or make a copy in notpad of any instructions given, as sometimes it is necessary to go offline and you will lose access to them.Run Combofix:You may be asked to install or update the Recovery Console (Win XP Only) if this happens please allow it to do so (you will need to be connected to the internet for this)Before you run Combofix I will need you to turn off any security software you have running, If you do not know how to do this you can find out >here< or >here<Combofix may need to reboot your computer more than once to do its job this is normal.You can download Combofix from one of these links.Link 1Link 2Link 3 1. Close any open browsers or any other programs that are open.2. Close/disable all anti virus and anti malware programs so they do not interfere with the r... Read more

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I just started a new job and the laptop I was given is having some Smitfraud-C.CoreService issues. From reading previous posts, I understand posting the following HJT log is the first requirement. Please advise as to the remaining steps required to correct this nuisance.

Logfile of HijackThis v1.99.1
Scan saved at 2:39:48 PM, on 7/5/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\Program Files\Windows Defender\MsMpEng.exe
C:\Program Files\Panda Software\AVTC\PavSrv51.exe
C:\Program Files\Panda Software\AVTC\AVENGINE.EXE
C:\Program Files\Intel\Wireless\Bin\EvtEng.exe
C:\Program Files\Intel\Wireless\Bin\S24EvMon.exe
C:\Program Files\Intel\Wireless\Bin\WLKeeper.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\aawservice.exe
C:\Program Files\Grisoft\AVG Anti-Spyware 7.5\guard.exe
C:\Program Files\Panda Software\Panda Administrator 3\Pav_Agent\Pagent.exe
C:\Program Files\Panda Software\Panda Administrator 3\Scheduler\pavsched.exe
C:\Program Files\Panda Software\Panda Administrator 3\Pav_Agent\pagentwd.exe
C:\Program Files\Common Files\Panda Software\PavShld\pavprsrv.exe... Read more

A:core.cache.dsk, core.sys, & HKEY_LOCAL_MACHINE\WSYSTEM\ControlSet001\Services\ core

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Any idea, why could this be happening? System process consumes up to 30% CPU, which is unusually, as I have never seen System process consume anything on any machine (including same laptop with Windows 7).

A:System consuming 10-30% CPU

Probably some kind of maintenance running. I wouldn't worry about it unless it stays like that non-stop for a long time or something. It's simply the kernel doing its thing.

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Hi SF,my system resources are using too much RAM and CPU,and i cant run even low programs.Please find my attachments.
Many thanks in advance....

A:System Resources are consuming more RAM....

Everything looks reasonable except AVG I suppose the antimalware service is pretty high
No telling how many others are related to AVG though :/

Which I believe AVG to be a bloated antivirus and not really windows friendly either
I would prefer Panda/ Avast = if you can get from anywhere but C-Net.

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I started buying the parts yesterday with the case and motherboard. I picked up an Antec Nine Hundred case and an ASUS P5KC motherboard. This board will support either the core 2 duo or core 2 quad chip and has slots for 4 ddr2 dimms and 2 ddr3. So here's what I'm thinking for the rest:

Antec TP3-550 PSU (550W)
Western Digital 750GB HDD
EVGA 512 MB Video PCI-E

Question: Should I go with the Core2 Duo at 3.06 GHz or the Core 2 Quad at 2.4? In either case I can get either 2GB DDR3 at 1333 MHz or 4GB DDR2 at 1066 MHz for roughly the same price. With the DDR3 the memory would be maxed out because there are only two DDR3 slots and I can't find 2GB DDR3 dimms that I can afford.

Edit: I picked out a Zalman cooler because I have one in my current PC and when I installed it it cut the idle temp on the CPU by 12 degrees but the case has a side vent and room for a 120mm fan. Should I get the cooler or stick with the stock HSF and install the side fan? This case is loaded with fans already - two 120mm in front pushing through the drive bays, 1 120mm exhaust fan at the top rear of the case and a 200mm on top. I think the 550W PSU will handle that and more.

A:New System Build - Core 2 Duo or Core 2 Quad?

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I'm running WinXP on an old Dell Dimension 2400. Starting about a month ago, the computer has been ridiculously slow, freezing and waiting to do anything. Sometimes I can't even move the cursor arrow. Using Task Manager (and a lot of patience) I was able to see that the culprit was the "System" process, using between 80 and 100% of the CPU continuously. I even tried to end the process, but it won't let me. Is there any way I can find out exactly what's going on? What in "system" is consuming the resources and keeping me from using the computer? This happens even before I open a browser, so I'm sure it's not browser-related. Until I get this resolved, the computer is essentially unusable.

A:Solved: System consuming CPU resources

Right-click MY COMPUTER, then click Properties.

When the "System Properties" window appears, make sure it's on the "General" tab.
(See below thumbnail)

Write down what's listed in the Computer: and System: sections, then submit that information here exactly as you see it there.

This will show us the version of Windows XP and the processor's rated and actual speed and the amount of installed and used RAM.

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Recently began having a problem with my computer freezing. Thought it was virus. Cleaned system. Then ran across indication that it might be caused by a conflict between my Audigy 2 sound card and recent XP update. Here's the scenario:

Boot up - Creative driver loads - system works fine until accessing anything that requires sound. Then system freezes or at least slows to near death. Checked processes and see that one instance of svchost.exe is using tons of resources and that CPU performance is at 100% and stuck there. Ended the "offending" instance of svchost.exe and system is back to normal function. HOWEVER, there is no sound, and no access to sound card until I reboot. A couple of postings I found indicate the afformentioned conflict. Creative doesn't acknowledge and no newer driver is available.

I have read several instances of the same problem, but no solution as of yet. Card is about 1 1/2 years and Creative says I can pay for their support - NO, I'll buy another companies sound card first. Don't want them to fix a problem I created, but they should certainly fix one their driver has created (OK so another Microsoft "update" did it - think bill cares?)

Here's the system:

Dell Dimension 8200
1.87 GHz
XP Home Servie Pak 2 with all of the most recent "security" updates
1GB Ram
ATI Audigy 2 sound Card
Windows Media Player 9 (don't like 11)

Any suggestions of confirming posts might help me get to the solution.


A:Svchost.exe Consuming All System Resources

Hi joematrix , If you still need help, could you please post back a complete HJT log.Thanks.Starbuck

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I know windows update comes under this service host tab and hence I checked for windows updates manually, it shows windows is up to date. And still this tab is consuming almost all of my bandwidth besides actually getting updates. Please get me a solution which at worst will be disabling windows update service.

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Hi everyone. New guy here.
Since upgrading to W10 from W7 SP1, I constantly have 'System interrupts' consuming half of my Process CPU% on taskmgr. It is also consistently in the upper 30s in Details percent. I have scoured the internet for solutions of which I tried several. NO LUCK.
No luck on MS support site either.


Laptop: HP Pavilion Entertainment
CPU: AMD Turion 2 Ultra Dual-Core Mobile M600 2.40 GHz
Memory: 4GB
System type: 64-bit, x64-based processor
Audio/Video: AMD High Definition Audio Device
IDT High Definition Audio CODEC
Display: ATI Mobility Radeon HD 4200 Series

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When i am switching on the system it is showing like on the display screen DHCP........................................................
and then the system is going to the user name and password wizard due to the above DHCP error some time is getting consumed unnecessarily to go to the user name and password wizard.

So could anyone please let me know how can i overcome the above problem.

Awaiting for the reply.

Thank you for your valuable time.

A:system bootup consuming the time due to dhcp error

could any one please help me i did not get a solution for the problem

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Hi guys. I've been looking at 2 laptops, they are basically identical but one has an Intel Core i3-4005U mobile processor and 4GB of RAM, and the other one has an AMD A4-5000 mobile processor and 6GB RAM. The guy at the store and a couple other people I know told me that the Core i3 is better than the A4 as the AMD "Quad Core" processors aren't very good, so even though the Intel i3 is only dual core it will be better than the quad core AMD. The other question is the RAM. Is 6GB that much better than 4GB or will 4GB be fine for basic use. (That's all this laptop is for. Basic use and touch apps since it will be touchscreen)

The AMD laptop is this one: Buy the HP Pavilion Notebook - AMD A4, 6GB, 15.6 at TigerDirect.ca
And the Intel here: Buy the HP TouchSmart 15.6 Notebook PC - F5W37UA#ABL at TigerDirect.ca

Last question, what the hell is DDR3L? All the new laptops have it nowadays... Is it backward compatible with normal DDR3 laptop RAM? Meaning can I take a normal laptop DDR3 4GB stick out of my dads laptop and put it into the 4GB (i3) laptop if thats the one i'm gonna get? Or does the DDR3 "L" part cause issues?

Edit: Sorry i'm not sure if this is the right place for this thread. If it isn't mods could you please move it? Thanks

A:AMD A4-5000 "Quad Core" vs Intel Core i3-4005U Dual Core

Hmm, I guess you should read some reviews. But just from the specs the AMD has 6 GB ram instead of 4. Has a DVD burner where the Intel shows no optical drive. It only has W8 8.0 where the Intel has 8.1. But some people may prefer 8.0.

Read reviews. See how each performs. If you don't wish to use it to burn DVD then the optical drive, or lack thereof may not matter to you.

Edit: Oh, and the AMD is about $80 cheaper.

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I am trying to choose between different Dell Latitude D420/D430 laptops. They come from a very good company who get stacks of laptops from Dell and sell them as refurbished (as good as new) at good prices (http://ndc.co.uk/browse_sub-Latitude_D420_D430-37.html). I will use it for MS Office, Outlook, internet, and nothing much else.

The choice is between Core Solo 1.06GHz or 1.2GHz; Core Duo 1.2GHz; or Core 2 Duo 1.2GHz or 1.33GHz. (The D430 has a brighter screen and allows Core 2 Duo - apart from that (I think...) D420 and D430 are identical.)

I'm hesitant about going for the cheapest, but from what I can tell Core Solo will handle all these functions well. I have seen that Core 2 Duo can be 30% faster than Core Duo, but I wonder if I will notice it on what I run.

At the moment I have a Core Duo 1.2GHz/D420 which runs fine, except for some freezing sometimes when I open Outlook (it resolves after 10-20 seconds).

A:Choosing between Core Solo, Core Duo and Core 2 Duo

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I am trying to choose between different Dell Latitude D420/D430 laptops. They come from a very good company who get stacks of laptops from Dell and sell them as refurbished (as good as new) at good prices (http://ndc.co.uk/browse_sub-Latitude_D420_D430-37.html). I will use it for MS Office, Outlook, internet, and nothing much else.

The choice is between Core Solo 1.06GHz or 1.2GHz; Core Duo 1.2GHz; or Core 2 Duo 1.2GHz or 1.33GHz. (The D430 has a brighter screen and allows Core 2 Duo - apart from that (I think...) D420 and D430 are identical.)

I'm hesitant about going for the cheapest, but from what I can tell Core Solo will handle all these functions well. I have seen that Core 2 Duo can be 30% faster than Core Duo, but I wonder if I will notice it on what I run.

At the moment I have a Core Duo 1.2GHz/D420 which runs fine, except for some freezing sometimes when I open Outlook (it resolves after 10-20 seconds).

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Hello Reader,
I recently bought an E6430 laptop with Windows 10 Pro and had about 3 months of trouble free use out of it until yesterday morning when it completely failed. It is definitely the motherboard, because whenever I connect the (or any other) AC Adapter to the laptop, the green light on it instantly turns off and the computer is still stone dead - no lights, no sound of spinning fans or HDD. Totally useless now.
I tried the recommended 'reset' steps where I removed the battery, AC Adapter, (and later: the HDD and RAM as well) and held the power on button for at least 30 seconds, before reconnectig the battery and trying to turn it on again.. Still dead. Nothing I tried worked, so conceded that I'm just another one of possibly 100's of thousands of similar disappointed 'victims' of this (all too common) fault with many post 2006 laptops (not only Dell). This is the third such experience I've had myself with the same total failure, since 2012!
So, quick solution (so I thought earlier yesterday): I went on ebay and bought a new laptop which I thought was identical, however I've since discovered the (newer) one I just purchased on ebay for $400.00 is not exactly the same as the model that just self-converted into a doorstop. That was an E6430 14 Core i5 3320M, 2.6GHz. The one I just bought to replace it with is an E6430 Core i7-3520M 2.9GHz. The plan is to simply remove the HDD from the doorstop (i5 3320M, 2.6 Hz) and place it into the new... Read more

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Hi, Currently I'm using a dual core 6850 and I'm thinking about buying a quad core. I have a PSU of 500 W as spare.

Can i replace the CPU to a Quad Core without changing the cooling system?

A:replace dual core CPU by quad core what about heatsink? in Mini Tower 755 Optiplex

Your spare 500W power supply likely DOES NOT HAVE sufficient 3.3v/5v power and therefore will not work.  If you do not use the performance copper heatsink it will work but the fan will be running all the time.   The Copper heatpipe heatsink is the same as the GX620 heatsink. HEATSINK D9729  SHROUD J9761


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so which would be better:

dual core celeron 1.73ghz with 1mb l2 cache or single core intel pentium 4 2.4ghz 512kb l2 cache

A:dual core celeron 1.73ghz versus single core pentium 4 2.4ghz

I don't think there are any Celeron Processors which are dual core and so the Pentium 4 will definitely be faster. If you give me model numbers I might be of more help.

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I'm buying a new computer with Vista home premium (32 bit), and I can't decide whether I should get a 2.4 quad core or a faster dual core (since it's cheaper).

I've searched about this but all the results I've got were from 2007, so I'm not sure if things changed much now.

So what do you think? will I benefit from the additional cores? or shall I go with faster dual cores?
appreciate your help

A:Solved: Fast Dual Core or Slower Quad Core? (quick question)

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Already saw differents answer but never by the one guy that say.. "Yes, i already upgrade my dual core cpu to quad core in my elitebook 8470p"I saw documents with info from hp with "3610qm 3630qm 3720qm and 3740qm" support for 8470p and 8570p models in this forum.There in JUNE 2012, The product overview:http://h20565.www2.hp.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c03373336Said only 3610qm and 3720qm are compatible with the 8470p.But recently document i saw from hp (and i think is the reference guide more actual, january 2013 ) to 8470p and 8470w models like this:http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03659338-3.pdfthere is not clear, even this document show that only 8470w support quadcore and for 8470p show only dual core models..so i need confirmation before buy quad core model, anybody can confirm if its possible??Thanks a lot

A:HP Elitebook 8470P Dual Core to Quad Core upgrade, it suppor...

Hi, HP Elitebook 8470P is a series of many models/products of laptops and can spread over few years. Very hard to answer because we don't know which year is for your machine. Lately HP gives G1, G2, G3 ..... for some series that give us more information. The document in front of me now dated June 2013 gives another side of the picture PROCESSOR3rd Generation IntelŽ Core? i7-3740QM (2.70 GHz, 6 MB L3 cache, 45W, 4 cores)*Up to 3.70 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i7-3720QM (2.60 GHz, 6 MB L3 cache, 45W, 4 cores)*Up to 3.60 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i7-3630QM (2.40 GHz, 6 MB L3 cache, 45W, 4 cores)*?Up to 3.40 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i7-3610QM (2.30 GHz, 6 MB L3 cache, 45W, 4 cores)*?Up to 3.30 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i7-3540M (3.0 GHz, 4 MB L3 cache, 35W, 2 cores)*Up to 3.70 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i7-3520M (2.90 GHz, 4 MB L3 cache, 35W, 2 cores)*Up to 3.60 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i5-3380M (2.90 GHz, 3 MB L3 cache, 35W, 2 cores)*Up to 3.60 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i5-3360M (2.80 GHz, 3 MB L3 cache, 35W, 2 cores)*Up to 3.50 GHz with Intel Turbo Boost Technology3rd Generation IntelŽ Core? i5-3340M (2.70 GHz, 3 MB L3 cache, 35W, 2 cores)*Up to 3.40 GHz with I... Read more

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System specs:
Athlon 64 x2 6000+ Windsor (3ghz, 125W tdp)
Gigabyte GA-Ma770DS3 rev 1 (AMD770+SB600)
His radeon 4850 512MB (had 3870 before)
2x1GB Kingston DDR2 800mhz CL5
2xSeagate ST3500 418AS in RAID 0 on SB600
Chieftec 460W power supply.
LG DVD rewriter
Bunch of fans
Windows XP pro 32bit x2, windows 7 (temporary)

I'm having a strange problem from quite a long time. PC just reboots randomly when I use internet applications like p2p or browser. It's that I can click "favorities" in firefox and puff, reboot. Leave pc for a night - reeboot at 3 o'clock. I tried to find the cause, updated drivers, bios, reinstalled windows several times - still getting the random crashes. But, if I use the numproc=1 statement and run my PC as single core, it stays perfectly stable for week+. But sadly the low power mode doesn't work then, and CPU is getting hotter than in dual core mode, also uses more energy. However, I don't think the low power mode isn't the cause - ran a prime95 for half a day on processor tuned down to 1ghz and 1,1V (low power mode) without a crash. Ran memtest in dos mode for 8 hours - no problems.
Also I have secondary XP pro without NIC drivers installed (no web) just for gaming and I can play for 12 hours straight and never got any crash of this kind. On the the primary OS, open two windows, start unpacking archive and try to browse web and I get a crash in 3 minutes. But sometimes nothing happens for a week or so. Also I notic... Read more

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Hello friends,
I m very eager to know that whats the actual difference between a Core 2 Duo processor and a Pentium Dual Core processor, other than their proceesing architecture?

According to most benchmarking sites including Tom's Hardware, Core 2 Duo E4300 or 6300 performs better than Pentium Dual Core 820 in almost all benchmarks.....whereas C2D E4300 or E6300(1.8 and 1.86 Ghz respectievely) are having MUCH lower clock speeds than Pentium D 820(2.8Ghz). Why like this???

I have 2 systems, one with C2D E4300 1.86 Ghz and another(from which I am writing this thread) is Pentium D 820 2.8Ghz. But I dont see any MUCH performance difference in reality, although in multi-tasking and gaming C2D system still performs better.

Can anybody please explain me in details.....
Thanks in advance.

A:Why Core 2 Duo outperforms Pentium Dual Core even when C2D has lower clock Speed??

The Core 2 Duo doesn't share the same architecture as the older NetBurst architecture of the Pentium D, which is also shared by the Pentium 4. The Pentium D is effectively a pair of Pentium 4 CPUs on one die. The Core 2 Duo architecture allows for a lot more processing to be done in one cycle, hence more information can be pushed in, say, 1 million cycles by the Core 2 Duo than the Pentium D. As for 'reality', there obviously won't be much difference when both systems are used for stuff like playing music etc. But the real differences will show up when you tax them, such as when playing an HD video without a video card supporting HD-decoding where the Core 2 Duo will be able to process information much more quicker than the Pentium D and so you will have a smoother image. Check on Wikipedia for more in-depth details.

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I am buying a new rig tomorrow, just wanted to see what you thought about it.

I have a choice between a $269 used pentium dual core vs a brand new 299 AMD Athlon? Single-Core Processor LE-1620?

Whats better and how faster is the AMD Athlon? Single-Core Processor LE-1620 vs my pentium III/600MHZ?

A:Pentium Dual core vs AMD Athlon Single-Core Processor LE-1620?

Depends on what the specs are with the Intel dual core and what specs you're getting with the AMD.

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Hey all,
I have some proprietary software that works great on a single-core processor. When I try to run it on a dual-core or above, the software loads, works once, and then messes up.

The software uses modems to dial out to our payphones. We found a work-around by turning off one processor in the bios, but then, what's the point of having a dual-core processor.

Please help. The software is doing this on Windows XP.


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I want to know if it's still safe to run my cpu under these tempreatures.

Currently my 2 cores tempreature are bettwen 55c-65c at 5% load. Room temp is about 36c.

Am I over the maximum core temp, will the cpu be damaged if i keep running my system and is this normal?

A:Solved: Maximum Intel Core 2 Duo E8500 core temp?

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I did a check today on my computer because its been running slower than I thought it would when I bought it. When I ran the test it said I have 1 core working, and that the processor is at 2.36 GHz, not the 2.66 it should be at. I don't know why only 1 of the cores is working, so I was hoping one of u tech guys out there might know... Can anyone help?

A:Solved: Intel Core 2 Quad Q8400 with only 1 working core


Can you give specifics on your computer such as make and model # and your OS?
(if custom built; motherboard model and model#, operating system, memory amount, BIOS settings if applicable..etc)

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Hello friends, Which one of the processor is faster & better between Pentium P4 3.6 GHz 'Processor No. 660 Single core 2MB L2' and the other one is 'P4 3.4 GHz Processor No. 945 Dual Core 4MB L2 Cache'. So one is a 3.6 GHz single core and other one is 3.4 GHz dual core. Thanks in advance


A:Comparing Single core & dual core Pentium processors

Welcome to our forum...may I suggest before jumping on to a new forum and posting a question, especially on a heavily asked current topic, it would be a better idea and provide you faster response time if you first searched the topic....

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Simply put- RED Blue Screens. I don't know what I need to call them. THEY ARE RED! And they just reference "An error reading the instruction set" There is no STOP Error. I upgraded the Processor from AMD Athlon x2 5000+ to an AMD Phenom x4 9650. I have not overclocked it. In fact, first thing I did after installing it was reset CMOS.

I've checked for minidumps relating to this issue but there are none. I am running Windows 7 x64 Home Premium.

I've tried doing research but my results are non-conclusive.

A:Strange Behaviour after Upgrading to AMD Quad-Core from Dual-Core

Hello Timmah,
Everything is running OK, you drop in the new CPU, then you start getting problems.
Have you double checked all the connections and power leads, plus all the data cables ?.
Is there a Bios update that will address the issue ?, it may be worth checking the MB manufacturers site.
Hope this helps, good luck and post your results.

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I have a xigmatek rifle cpu cooler on a quad core q9550 processor , and I am wondering what should my core temps be?

Coretemp is showing (at idle)-
core0 - 49 C
core1 - 46 C
core2 - 45 C
core3 - 55 C

Why is core3 so much higher? Is it possible the thermal compound above the core3 is not as spread out as it is on the other cores? I used arctic silver 5 and followed the instructions to put the compound on as a single line across the cores of the cpu.
Also, I have speedfan 4.34, and for some reason it reports different core temperatures
core0 - 42 C
core1 - 42 C
core2- 40 C
core3 - 51 C

Also, what is the "internal temp" and "remote temp" that speedfan reports. It also seems to have confused the CPU with "System" as CPU is showing 23 C and System 37 C.
Lastly, my video card, ATI HD4870 seems to run so hot!
temps at IDLE are
GPU temp - 77C
GPU Load 0%
Fan Sped 1288 RPM
GPU Temp (DISPIO) 77.5
VDDC Current 29.8 Amps
VDDC slave #1 temp 63 C
VDDC slave #2 temp 66 C
VDDC slave #3 temp 63 C
VDDC 1.2625 V

A:what are normal core temps for a quad core q9550 on air cooling?

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I was just interested in knowing if my intel celeron D 335 2.80GHz processor is dual core or single core because on intel's website, I see that they make a dual and single core version but I can't determine which one mine is?


A:Solved: Intel Celeron D 335: Dual core or Single core

It's a single core.

There are dual core Celerons, but yours isn't.

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Ok, I dont want to repost, just, go to this link. Here is the link

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I am looking to build my own PC as I can't afford Ł1,000+ to get someone to make one for me, I will be using it for gaming and communication and a little college work, I will probably be using Bullguard to protect it and OpenOffice instead of Microsoft Office with a Win 7 64bit OS.

Bearing this in mind what would be the best Processor for the Intel Core i5 3.4 GHz Quad-Core (BX80637I53570K) Processor and what would be the maximum Memory and Storage I could attach to it? ( I preferably want 8GB of Memory and 1tb of storage ) but I can be flexible.

A:What would be the best motherboard for a Intel Core i5 3.4 GHz Quad-Core (BX80637I53570K) Processor?

The CPU you want is the i5 3570K. That runs on the socket LGA 1155. When you are on a budget, any mid range mobo will suit your needs. Use the savings from the mobo towards a better HDD or even an SSD. You will also need a GPU.

I would recommend the ASUS P8Z77-V LK motherboard. As for RAM, 8GB is enough. As for the HDD, 1TB is great. I recommend the WD Caviar Black 1TB HDD.

Make sure you can get in a GPU.

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I'm looking at new laptops and would like to know what ppl think of the AMD Phenom II Quad Core Mobile Processor N930 VS the Intel Core I3 350M Processor.

Thanks for the input.

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I have just about decided to go with the e6300 but want to make sure one last time it is the right way to go. These two CPU's are the same price. According to most people the e6300 left the 4200+ in the dust in all tests. I do however still like AMD... What do you guys think? The e6300 or the 4200+. Even though both are low core speeds (1.87 and 2.2ghz respectively) they still out perform a 3.6ghz pentium 4. Is this correct? I dont understand why a CPU with low core speed can outperform one with very high speed? I was always under the impression that core speed was the main determinant of "performance". If anyone could clear this up it would be hugely appreciated. Also, for the same money I can buy a Intel Pentium*D-940 CPU - 3.2 Ghz, 800 MHz FSB, 2 x 2MB L2 Cache, LGA775...

Which of these 3 is the best?

All help would be hugely appreciated.



A:Intel e6300 core 2 duo conroe VS AMD ATHLON 64 X2 4200+ AM2 D/CORE

Out of those 3, the E6300 is the best. Conroe's new architecture is so efficient, that easily outperforms Netburst based CPU´s (P4, PD, Celeron D), and even manages to outperform AMD CPU's.

You can see by yourself HERE. All Conroe CPU's perform excellent. And you can overclock them very easily, and that way, your 1.8GHZ Conroe overclocked to 2000-2400 MHZ will completely trash the other CPU's.

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Is Core I5 750 2.66GHZ Quad Core CPU & MSI P55-CD53 P55 ATX DDR3 Motherboard a good choice?

Or should I get an Intel board and which Intel board?


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It is a Dell cheap laptop vostro 2520 fitted an i3 2.4 m ..I updated bios fitted another 2gb ram .
Should I do any other configering it takes a long time to fully boot up . That is to connect to internet . I think it was faster before
I did upgrade.

A:fitting a core i3 in place of a celeron dual core B802

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I have two laptops made by the same manufacturer and same year, but one is a dual core laptop with an SSD harddrive and the other is a quad core laptop with a regular hard drive. Both laptops run Windows 8.

I would like to transfer my programs and files from the dual core to the quad core. However, obviously the quad core has different hardware.

I am wondering if I simply remove the SSD from the dual core and put it into the quad core (replacing the quad's primary hard drive with the SSD) and simply boot up the quad core, would that be sufficient? Will the quad core recognize the hardware mismatch and automatically correct the drivers, while keeping my programs and files?

Or is there some other, efficient way to make the transfer? I really want to avoid having to reinstall all my programs.

Thank you

A:Transfer programs and files from Dual Core to Quad Core

There are a lot of third party tools designed to move a Windows installation to new hardware. I prefer using native Windows tool Sysprep for this, mainly because the method is the one and only Microsoft supports and recommends but also because it has never failed me.

The method is described in this tutorial on our sister site the Seven Forums and works also with Windows 8: Windows 7 Installation - Transfer to a New Computer - Windows 7 Help Forums. Method One in tutorial would be ideal for you for moving the SSD to new computer.

Read the information and warnings in the beginning of the tutorial carefully, especially the warning about Windows needing to be reactivated is important. Come back if you have any questions.


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I have running TDA-ThinkorSwim Investing software which experiences periodic performance issues, which reeves the fan or Hard disk then locks up all performance until the TOS performance issue is acknowledged.  TOS uses an internal 7.0 Java.  typical
CPU usage is 30-45% but I have seen CPU surging usage as high as 119% with frequency at 132%.  Processing seems to halt, graphics halt or are severely retarded at best.  Using Speedfan software Seeing CPU temps. peak at 85C or 185F. 

On this higher end and equipped 64 Bit HP Envy Laptop, with a Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz, 2401 Mhz, 4 Core(s), 8 Logical Processor(s) Machine containing an Intel HD Graphics 4600 card.   

any suggestions on how to choke off these problems? 

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Just finished a no formatting clean install of XP Pro sp1, on my IDE drive, Running an HD61CR Intel mobo with an a shiny new duo-core i3-3225 (HD4000) on top. 2 gigs of ram, nothing else significant. No errors in setup. Latest Chipset and Graphics drivers downloaded and installed, nothing else done. Task manager shows 4 processors, 2 real, 2 hyper. One of which has almost no processes, its other some process on it, but the other two processors show a never-ending spiking, like a bell curve, every 20 seconds they both spike nearly identically to 80%, then drop to 10% only to spike again. These register as 'system' and 'system idle processes' in the task manager with all users processes showing.

[See attached] photo for task manager output.

This is a new system, just fired it up today, the only thing old is the IDE drive set to IDE mode in bios, no other bios changes except clock and power failure state. Oh and during windows 'loading setup files...' the screen flashed on and off, but not like the normal few times this was every 5-20 seconds, then 2-4 times for 1 second each, and it did this 50-80 times over 15 minutes, but stopped entirely once windows was into its friendly looking install screens. and there are no errors on a regular reboot. Everything otherwise looks perfect.

All ideas accepted....

A:i3 XP One Core Process Spiking

2 errors / 3 letters = sp2

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I'm seeing significant core 3 usage, circa 70-90%, but overall cpu usage is only 13% , so not impacting on system performance.

Nonetheless, such activity (these days !) is a cause for concern, when it runs for 30 mins plus, so how can I tell what's using that core ?

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