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A485 RAM-Modules usable in Dual-Channel-Mode?

Q: A485 RAM-Modules usable in Dual-Channel-Mode?

Are the two RAM-Slots in the A485 usable in Dual-Cannel-Mode?

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Preferred Solution: A485 RAM-Modules usable in Dual-Channel-Mode?

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As far as I can see I have currently dual channel DDR3 RAM memory modules.
Assume it would not be written on a label sticker on the ram modules:
How can I find out if a ram modules support dual channel or not?

As I learned I have to put dual channel mondules into different channel slots to get full speed.

My motherboard has current 4 slots:
Channel A: slot 1 + slot 2
Channel B: slot 1 + slot 2

Assume I put the 2 modules into the 2 slots of channel A.
How much performance/speed loss do I get approximately?

What happens when I have two single channel ram modules:
Does it matter where (in which slots) I put them?


A:Mis-insert Dual Channel RAM memory modules?

Quote: Originally Posted by pstein

As far as I can see I have currently dual channel DDR3 RAM memory modules.
Assume it would not be written on a label sticker on the ram modules:
How can I find out if a ram modules support dual channel or not?

You can buy sets of RAM that work together,
If you have more RAM modules that are the same you can try them out in your PC It will work or it won't
Dual Channel is selected in the BIOS (this can happen automatically on some boards)

Quote: Originally Posted by pstein

As I learned I have to put dual channel mondules into different channel slots to get full speed.

My motherboard has current 4 slots:
Channel A: slot 1 + slot 2
Channel B: slot 1 + slot 2

Assume I put the 2 modules into the 2 slots of channel A.
How much performance/speed loss do I get approximately?

What happens when I have two single channel ram modules:
Does it matter where (in which slots) I put them?


Refer to your motherboard manual or have a look here as a guide only; RAM issues Windows 7 Ultimate 64 Bit

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Hello everyone,

A few days ago I got myself the Toshiba Satellite L50D-C-18J with AMD A10-8700P CPU.

Factory 1 memory module with 8 GB (DDR3L 1600MHz) are installed. According to various tools (AIDA64, HWInfo64, CPU-Z), the memory will operate at 668 MHz, ie in the 1333MHz mode.

The free memory slot I have with another 8 GB DDR3L 1600MHz (with same memory timings, but other manufacturers) occupied. The store will continue to operate only in single-channel mode and not in dual channel mode. The A10 CPU should support.

Latest BIOS version I installed.

Has one an idea of how I enable the dual-channel mode, and can set the memory frequency? In the BIOS there are unfortunately almost no settings or does anyone have the same notebook model and with him the dual-channel mode is running?

Thanks and regards


A:Satellite L50D-C-18J - two RAM modules but only single channel mode

Hi. Different manufacturer is not a problem.
You should check the followings:
1) Make sure both RAM modules works at 1.35V. Search on the internet what should be the supply voltage for the RAM that you installed. If it doesn't work at 1.35V then this is the problem.
2) If those RAM modules support ECC or not. If one of your RAM support ECC and the other one doesn't, than this is the problem.

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I recently bought a laptop Satellite C70-C-199 with 4GB of RAM and i installed one more 4GB RAM module.
The module that i've installed is not recognized by the BIOS.

What i've tried:
1) reseating the RAMs multiple times.
2) swapping the two RAMs between the two slots.
3) Updated BIOS to the latest version

On the link down below you'll find some AIDA64 reports that contains all the details about the chipset and the two RAM modules.

Thanks for your help in advance.

A:Satellite C70-C-199 - Duel channel mode is not active for RAM modules

I found the problem. This laptop needs DDR3L. This means that the RAM modules works at 1.35V. My 4GB Kingston works only at 1.5V.

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Is it possible to fill all of the memory slots on a motherboard that supports dual channel with non-matching ram (one chip at a time as I need/afford it)? If I just put more ram in will the motherboard recognise all of it and just not take advantage of the second channel, or will it not recognise that non-matching ram in the second channel sockets?


A:Dual channel RAM in single channel mode

It will recognize it but not run in dual channel if the pair are mismatched.
Ps; The pair don't have to be exact matches by the way, same speed, type, size, and timings allow for two different brands to run in dual channel.

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Is there a setting somewhere in Windows, or is there a program I can run, that will tell me if my RAM is actually running in dual channel mode? I have identical DDR400 SIMMS in slots 1 & 3 of my ASUS P4P80E-DLX mobo. I know they SHOULD be in dual channel mode. I want to confirm it.

Also, if I add SIMMs in slots 2 & 4, do they have to be the same SIZE as the ones in slots 1 & 3 inorder to stay in dual channel mode? I saw a post that says yes, but that's never been confirmed and some sources say it doesn't matter, as long as the SIMMs are matched in their banks. I've also posted this to the ASUS help-desk.

A:Is my RAM dual channel mode?

here's a program http://www.cpuid.com/cpuz.php

just click on the memory tab and you'll see if you're in single or dual channel mode

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I have a Gigabyte GA-8I915G-MF i915G LGA775 and 2 1GBsticks of DDR400. It says im running on single channel when i startup. How would i run dual channel mode? I heard if the sticks of RAM are exactly the same they can be ran in dual mode.

A:dual channel mode

if you have 4 memory slots and two stickks of ram then the memory should be in slots 1 and slot three

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OK first off the specs....

ASUS A7N8X-X Mobo Rev.2 1005 BIOS

XP2500+ Barton running @ 2200Mghz 200x11, 5 3 3 3 Timings

512 (2x256) Samsung DDR400 PC3200 Memory CL3 (ewe!) it was cheap!

PNY GF4 Ti4200 128MB

Audigy Gamer


The memory is matched with the same serial numbers and all. When I boot up and it goes through POST it says 512 mem in single channel mode? I have tried all the different slots and different combinations still says the same thing every time. BUT I have a huge increase in speed. When I first got the board I only had one 512MB stick of Corsair XMS PC3000 C2 memory so I ran it until I got this other mem. I was getting about 8000 3dmarks in 2001SE. At that time I was running 12.5 x 171=2140Mghz, cause that was all the Corsair could take. So I put the Samsung in and now Im running sync 200FSB x 11=2200 My 3dmark 2001SE score now is 12715! Now Ive been OC'ing long enough to know 60Mghz isnt gonna give that much increase. And Im not sure if runnning sync 200 as compared to 171 sync'd is gonna make that much of a difference. But I dont know. All I do know is every time I boot up it says SINGLE CHANNEL MODE and it's realy making me mad! lol
Anyway I was hoping some of you might have some mem benches in SANDRA for me to compare to. I'm getting 3008 in memory bench. What Im thinking is the BIOS is reporting incorrectly but I'd like some other oppinions.

Ohh one last thing... If you havnt yet, GET A BARTON XP2500+ you will not be sorr... Read more

A:A7N8X Cant get into dual channel mode

From this thread:


and this thread:


A complete SMOKIN' system was designed using the Barton and Corsair. An excerpt concerning your Dual Channel:


"3 DDR Slots supporting DDR200/266/333/400 modules. If you want to take advantage the Dual Channel DDR, just ensure that have one DDR in the black slot and the other in the blue." Dual 333 sticks should be fine. The biggest gain using two 400 sticks I've seen is maybe 5%. Not worth the price diff.

You have to have TWO sticks of ram for the TWO seperate controllers to work simultaneously. It is how it works. Check anywhere. That's why the ram banks are located on the MB how they are. So you can tell which is bank 1 and which is bank 2 so that you can setup dual ddr correctly. Let me quote from the A7N8X Deluxe manual on Memory Configuration. "To enhance system performance, utilize dual-channel feature when installing ADDITIONAL DIMMS. You may install the DIMMs in the following sequence: Sockets 1 and 3 or Sockets 2 and 3 or Sockets 1, 2, and 3." Page 14 2.5.2 Note.

At a point in time (and still is, I hear), there was/were/are problems with Samsung(some) memory. Systems similar to yours run i... Read more

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The specifications for my laptop says it has 1 additional ram expansion slot

if I choose to install a memory stick in there, will it work in dual chanel with the existing ram?

and, aside from having the ability to open tons of web browsing tabs, what are the benefits of having more ram or running it in dual channel?

A:Can my laptop RAM run in dual channel mode?

As you said, you will be able to load more programs into ram, and also ram will work faster, but i doubt that you will see any performance increase without very specific tests, as ram is not the slowest part of pc anyway. But its worth increasing amount of ram - personaly i use newest dev version of chrome, and it sucks sooo much, i open 5-6 tabs and i run out of memory already - no other programs are running, my pc has 4 gb ram, so i feel like having 32mb of ram in 1990's .... As for dual channel support, you should check if your laptop model supports it, but i would say it must support it, as i have another low class laptop, it is 5+ years old, and even it supports dual channel ram, so i would say that almost every laptop should support it.

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I've been doing some video editing (and audio editing) for business presentations. As CEO of a small, fast-growing business, I do not have the luxury of walking away from the computer for half an hour while Adobe Premier Elements converts a video I've created into Flash or DVD format (which is what Adobe TS said I should do – walk away and don’t use the machine while it’s converting). I need to continue working.

I also need to minimize the chance of overloading the system and having a crash!

I'm running XP on an HP Compaq business desktop machine with the following specs according to what I got from HP:

Intel® Q35 chipset integrated
Intel® Core 2 Duo E6850 processor

I'm trying to determine whether I'm better off having 3GB or 4GB or RAM in it. The questions revolve around XP using only 3GB or a tad more, and the fact that, so I'm told, once I put 4 1GB memory sticks into this board, which uses up all four slots, it automatically goes into Dual Channel mode.

I'm told it won't go into Dual Channel mode until all 4 1-GB sticks are in, and that once they are it automatically kicks into Dual Channel mode by itself. This is after a few talks with HP TS (possibly even level 3 TS).

I would think the maximum amount of memory, and Dual Channel operation, is a good thing.

However, Since I keep hearing that XP is only able to use 3GB or a tad more, I'm wondering if, in fact, it will work better with 3GB than with 4GB. I'm wond... Read more

A:Is 4GB and Dual Channel mode good with XP?

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I dont know if my other dimm slot work because i put the one stick of ram in the other dimm slot and the computer does not boot up, then i put the ram back in the other slot and the computer boots, so can you not use the other dimm slot when in single channel mode?Computer: G7-2223nr  

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i've tried a total of four different kits of ram in dual channel on my computer, and my computer wont stay on in windows for more than a minute without restarting. not BSOD, simply restarting. However, it runs perfectly stable in single channel mode. my motherboard has the color coded ram socket things, and the manufacturer's website says it supports dual channel. any ideas?

here are my specs

ABIT ic-7 max3
3 hard drives (150 gig, two 80 gigs, two connected with IDE, and one connected with SATA)
nvidia 6800 ultra
intel pentium 4 running at 3.01ghz
currently, i've got one OCZ kit (2x512) and one Crucial kit (2x1gb) and neither work in dual channel mode. they're 184-pin DDR ram modules, both PC3200

A:dual channel mode doesn't work?

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I purchased a 8GB micron ddr4 module and added it into slot 2. Slot 1 has the original dell 8GB Micron ddr4 module.
The modules are Identical in specs per cpuid. All 16GB of ram is recognized but in the bios "System Information" under the General tab the bios says it is in single channel mode. I bought the additional memory so I could realize the boost in video graphics speed. Dual channel mode operation is important for a system that uses shared system memory for graphics.
Is there any way to set the bios to dual channel mode? 

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Hi my problem is my ram won't work when i put it in dual channel memory mode, when i switch the PC on it will sound continueous short fast beeps? HELP

MOBO: Gigabyte GA-P55-USB3
CPU : Intel i3 540 3.06Ghz
RAM : OCZ Gold 4GB(2X2GB) DDR3 1600

A:Ram Won't Work in Dual Channel Memory Mode

Did you built the PC yourself?
I would first check if they are put in the place correctly, and not backward or something (I did it myself :lol) both little flaps should be folded down.
If they are, remove one module and try to boot that way, then try with the other 1 in another slot.
Keep us informed!

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i have an asus M2N-MX SE Plus motherboard...it has only two DIMM slots and under specs it says that the motherboard supports dual channel memory...i got myself two 1gb transcend 800MHz rams..my problem is that when i check (using cpu-z) if my memory is working on dual channel it shows as single channel only..please help..

A:Memory doesn't run in dual channel mode

The only Transcend (by Micron) that passed Asus testing was the 512 st 533 Mhz.

They list other brand 1Gb sticks but NOT Transcend at 800 Mhz.

Therein may lie your problem.

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HiI have just brought an ideapad 310-15ABR (A10-9600p version), a model with 4GB soldered to the board and 1 slot with a 4GB ram module fitted. According to the technical specifications here: http://psref.lenovo.com/syspool/Sys/PDF/Lenovo%20Laptops/ideapad%20310%20(15_),%20310%20(15_%20Touch... this computer is capable of running in dual-channel mode. However, when I run speccy it reports the memory is running in single channel. There appears to be no option in the bios to change this and as the motherboard only has one slot for ram I am at a loss as to how I can get it running in dual-channel mode. Can someone advise me please? thanks

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Hello folks,

I intend on installing additional RAM to a PC which is getting a bit long in the tooth. It currently runs the following in dual channel mode:2x2GB G.Skill DDR3-1600 F3-12800CL9D-4GBXL

The RAM I'm looking to add is:2x2GB G.Skill DDR3-1600 F3-12800CL9D-4GBRL

As you can see from the above, the two sets are not exactly the same. The RAM modules within each set however are matched. Do you think this might cause any problems?

Many thanks for your assistance

A:Installing non-identical RAM in dual-channel mode

Anytime all ram is not matched it can cause problems.

You have a good chance your rams will work together because they are so closely match but you won't know until you try.

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I ordered a i7-820QM. It only supports a max of 8 GB of 1333MHz RAM. While the motherboard has four slots for RAM, I have 2 x 4GB factory installed. In this config, dual channel symmetrical RAM is the fastest configuration. There is only one way to configure the two RAM chips to get dual channel symmetrical operation. Is this the way the RAM is factory installed? Thanks

A:Is Factory-installed RAM in Dual-Channel Mode?

When you purchase your, I assume, W510 or W701, you were given the option to choose the number of memory DIMMs to be installed.  e.g. 2 x 2GB, 1 x 4GB...etc.

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Hello all. Quick background, I have an Asus A8N-SLI Deluxe board, running a socket 939 AMD X24800, with 1 Gb(2x512Mb) memory sticks, I believe were manufactured by Infineon.

I noticed my computer was blue screening quite a bit recently while trying to encode / burn DVDs. I took the standard advice and ran memtest while I had my 2 x 512Mb sticks in slots A1 and B1 (for dual-channel mode). After 22 passes, it had 106 errors.

I proceeded to test each stick individualy in the B1 slot, and both were allowed to run 40+ passes, with no errors. I also ran both sticks in the B1 and B2 slots, and allowed it to run 20+ passes, with no errors. Last night I tried dual-channel again, but this time the memory was in slots A2 and B2. Considerably less errors, but still had errors, and all were on test 7.

I've deduced it must be a problem with the motherboard, likely the northbridge chipset that controls the memory. Any other ideas to get my memory running in dual-channel mode again, or should I just forget it and use the solution I discovered?

A:Memory Problems in Dual-Channel Mode

You might try changing the memory voltages/timings in the bios, and make sure that memory type is supported by your Asus motherboard

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Hi there,

I've been getting BSOD on my new DELL M1530 laptop recently. I called them up and they had me run their diagnostics an it showed a faulty HDD, I got it replaced but unfortunately, I still got BSOD stop errors, although slightly less frequently.

I ran memtest86+ and found a ton of errors on test 5 on the first pass. So I tried each stick (1x1GB, 1x2GB) in DIMM A and B by themselves and they all passed, as soon as I tried putting both sticks back in again, memtest showed dual channel and boom, test 5 tons of errors.

I'm completely baffled now unfortunately, does this suggest that perhaps it's not my ram thats faulty, maybe it's the mobo? Or perhaps my ram just doesn't like each other? Seems weird DELL would ship a laptop with incompatible ram, but then, going by their tech support so far, I wouldn't put it past them.

Does anyone have any ideas at what this would indicate? I'm stumped

A:Errors in memtest86+ in dual channel mode only

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Hello. Does my laptop E15 (E5-521G-88VM) support dual channel mode? In cpu-z I see "single". I have no chance to enable dual channel mode?S/N: NXMS5ER00443808........ I have 2 absolutely identical sticks. 2x8GB. 

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This is my first post, so a big hello.

Please bare with me, as I am not real computer literate.

I had a generic CPU made for me over here in the Philippines. About all I can tell you is that it has an Intel Core 2 Duo E7300 Processor, 2.0 GB Ram and a 150 GB IDE Hard Drive. I am using Win XP with all the latest updates.

There are no memory sticks or external hard drives connected to the CPU.

The CPU used to boot up real fast. Yesterday, the electric power had a big fluxuation and the power went so low for a second, it shut down my computer.

From that time forward, the computer boots up real slow and says "Dual Channel Mode" on the start-up screen. I never saw the "Dual Channel Mode" thing on the start-up screen before.

Could this be causing the CPU to start so slow?

I took a photo of what the screen shows upon start-up (below)

If this is causing my computer to start slow, how do I disable this "Dual Channel Mode"?

BTW ... I have no virus and I even did a System Restore to an earlier date ... No help.

Any advice?

Thank's so much,

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Hi, I recently purchased Corsair Dominator PC2-8500C5D (1066Mhz) to fit with.
-Asus P5K Premium WiFi/AP Black Pearl Edition
-Intel Core 2 Duo E8200
-Jeantech Storm 600W PSU
-ATI Sapphire Radeon HD2600 PRO
-Thermaltake V1 CPU Cooler

Because the RAM Is DDR2 I expected it to be in Dual Channel Mode, but when i open CPU-Z It says its in Single Channel Mode. The RAM is in Slots 1 and 2 of my Motherboard. And its Overclocking My CPU to 3750Mhz at 26C.
FSB:500 (Meaning I've underclocked the RAM)

I also keep crashing in a Online game Called RF-Online, and whenever I check after my RAM is always hot.

any ideas how to turn Dual Channel mode on??
Why Is it hot when its below its usual specifications???

A:Solved: Dominator PC2-8500C5D not in Dual Channel Mode????

You want to install the RAM in the two yellow slots, or two black slots. Is that what you have?

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Here's the problem, I'm building my new PC as we speak and I bought this mammoth cpu cooler (which while I knew it would be big I didn't read any reviews stating it covers a memory slot) which fully covers up my first ram slot and the heat spreader is too tall on the memory to try and weasel it in there. The Gigabyte's instructions tell me that there are two "dual channels" one using 1 and 3 and the other using 2 and 4. I installed the RAM into 2 and 4 because there is no other way for it to work. Is there any reason I wouldn't get the same performance out of slots 2 and 4 as opposed to 1 and 3?

A:Solved: Can dual channel memory be installed in channel 1 rather than channel 0?

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Hi Guys,
My first post on this fourm so please excuse any mistakes...

This is a new build.
msi z97-g43
G3420 CPU
16g vengence 2400 ram running at 1333
OS on SSD runing win 7 sp1

I've mem tested both sticks of ram independently and now also in dual ch configuration and all tests are positive after 9+ hrs. But when i boot into windows i get ramdom BSOD error 124 or c9 but only when in dual ch config.

Ive enclosed the mini dumps for you to check over.

I have also ran the verify driver win 7 app and got BSOD on HIDCLASS.SYS

reading about this issue some people say its a usb problem?

FYI - Ive tried cmos clear (as recomended from msi support)
Ive increased the ram voltage

but both have had no affect.

Any help would be amazing as im at a loss and want to throw this pc out the window!

A:random BSOD in dual channel memory mode 0x00000124 or c9

Hello timmy2x2, I will try to help you, if I can, but it may take me a while. First I would like you to do a couple of things for me. If you haven't already, please disable driver verifier. The purpose of driver verifier is to make your system crash. We may go back to it later, but for now, please disable it. You did a good job with your system specs, better than most. But I would like you to add as much detail to it as possible. We often have to look up the specs of a component and need the Manufacturer and model to do that. Also, please add your PSU and CPU cooler. Hopefully this will help you, in case you don't know some of the info. Please also include what anti virus you are using, in case you didn't already.
Please fill out your System Specs

Your System Specs will help us to help you, and doing it in this manner will make them available to all helpers in every post and keep us from hunting for them. We ask that you fill them out in as much detail as possible including Desktop or Laptop, Model number if it is an OEM computer and all components with the Manufacturer and Model number if possible.

If you will go to your last post and click the 'System Specs' in the bottom left of the post, you will find a link to update your system specs. Please fill those out in as much detail as possible, making sure to click save at the bottom of the page. If you would like to know what we would like, you can click 'My System Specs' at the botto... Read more

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There are several cases I've wanted to install memory in pairs to achieve dual-channel memory speeds, but I've come across a caveat or two about whether or not this is worth it.


How do I calculate whether or not the FSB is fast enough to take advantage of the memory speeds. I'll see cpuz refer to things like FSB:memory as "1:2", which I'm not sure refers to the memory controller taking advantage of the up and down side of the clock waveform, or if it's saying "give up, we're half the speed we need".
How do I calculate dual core beasts? Do the internal 2 "processors" share the FSB, or do they each have their own resulting in double access speed [attempts] to dual ported memory (note, not dual channel).
Forgive me please, my questions may be tripping all over themselves. It's been a longgggg time since I've calculated any of this out during my stint as a DSP software engineer.

I'll be glad to rephrase this in any way you all like.

A:Dual-Channel & FSB: Calculating the bottlenecks (Is Dual Channel Worth it???)

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My ASUS P4V8X-X Motherboard does not support running in dual channel mode. But can I still run dual channel DDR PC3200 400mhz non-ecc unbuffered ram in it? Seems I could, but I won't have the additional performance gains of running in dual channel mode. Does anyone know for certain if I can or can't?

A:Solved: Dual Channel ram in a dual channel unsupported mb.....?

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Hey Everyone,

I am brand spankin' new here, and I have a question for someone out there. I currently have a SOYO motherboard (which I have been having issues with) and I am going to be switching to a ECS Elite Group board in a few weeks. My question is, when I bought RAM for my SOYO I bought Patriot Dual Channel DDR 3200 1gb pair, but the ECS board I am switching to does not support Dual Channel, so can I still use the the 2 512 sticks normally on the new board or I do I have to get new memory or a different board? I would think it would just run them as 2 sticks of 512, but I am not sure and I wanted to know if anyone else knew this or not?

Thanks in advance for any help (and sorry if I missed this being posted somewhere else, I did try and search for the answer but didnt see anything).


A:Dual Channel DDR on NON-Dual Channel Motherboard, will it work?

rmsilver7 said:

when I bought RAM for my SOYO I bought Patriot Dual Channel DDR 3200 1gb pair, but the ECS board I am switching to does not support Dual Channel, so can I still use the the 2 512 sticks normally on the new board or I do I have to get new memory or a different board?Click to expand...

1. Yes.
2. No.

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Hey everyone

I got a bit of a problem here, and I'm at a loss on what to do to fix it.

Some background about the situation would be a good place to start. A few days ago I came home from work and found my PC in a "lights are on, but no one's home" state. The power button was lit up and the fans were in motion, but the monitors were in power saver mode, not the normal on state with the blank screen saver. I tried moving the mouse, mashing on the keyboard but nothing happened. So I reset the machine and it just went to a blank screen, no beeps, or messages, just the same ole lights on no ones home deal again.

Now before this I had been having memory problems, with blue screens saying "memory management" and "IRQL not less than or equal". So I thought it might be a bad strip of ram, and even bought two more strips to replace the ones I had removed. In the process of testing each strip I discovered that one was bad. (That was not the fix by the way)

After putting in the new ram in for a total of 8GB's of ram (figured if I'm gonna buy new ram might as well increase the total amount) it booted up and no more blue screens after loading into windows, YaY it was fixed or so I thought. A few weeks later the above incident occurred and the only way to get the PC to boot up was to pull two strips of the ram and insert the remaining strips into slots 1 and 3 for a single channel configuration. Didn't matter which set of ram I used, ju... Read more

A:Dual Channel Suddenly Stopped Working, Only Single Channel Remains

Britton, go to the asus site for your motherboard. Download and install the latest drivers. Download a copy of your manual and review the bios settings. If need be manually input the correct timings for your ram. Also make sure to follow the ram installation documentation for which slots to use to enable dual channel.

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My spec is in my profile, but I will also list it here.... I just noticed today that my RAM was running Single Channel mode, so I thought I would change it to Dual Channel mode... so I did.

It completes the Windows XP loading screen, then reboots... constantly, until I change it back to Single Channel mode.

Is there something wrong with my RAM? or is it the motherboard? or my PSU not giving the mobo enough power? I dont have every power cable plugged in, I have a 20 pin ATX power in the 24 pin plug, and the 4 pin ATX power plug and a 4 pin molex cable plugged into the motherboard. Could this not be giving it enough power?
Many thanks, system spec =

AMD Athlon 64 4000+
DFI Lanparty UT nF4 Ultra-D
2 x 512mb Crucial Ballistix PC3200 DDR400
Connect 3D X1800XT 256Mb
2 HDD's etc.
Antec TrueBlue 480W PSU.

A:System reboots constantly, when I change my RAM from Single Channel to Dual Channel

Check your mobo manual, to see in which slots you need to put memory sticks to make it work in Dual Channel mode.
AFAIK you need 1 each of the same size/type in slots 1 and 3 (yellow) for DC.

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I'm trying to decide what would give better performance, Dual Channeled 2x256 DDR400...or Single Channeled 2x256 DDR400 and 512 DDR2100 totalling 1gb RAM. I don't seem to notice much of a difference so far, but I haven't tried much. I figured I'd ask the pros at techspot for advice. :grinthumb

A:Dual Channel 2x256 DDR400 or Single Channel 1gb Mixed DDR RAM

& we are supposed to get your system specs how ? You could be using that Ram on a 600mhz Celeron for all we know.

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Single channel Nforce2 400 dethrones its dual channel stablemate

" ... ENTHUSIAST SITE amdmb.com discovered this unexpected anomaly, which could have far reaching Socket-A repercussions.

Soltek's bottom dollar SL-NV400-64 motherboard, which is based on the single channel nForce2 400 chipset, is the cause of all this news. What is amazing is that it beat Asus' dual channel flagship product - the A7N8X Deluxe, in the majority of benchmarks. Ryan Shrout, the amdmb.com reviewer, who put Soltek's motherboard through its paces, suggests that its performance lead in UT 2K3 is down to the additional overhead that a dual channel system board has to deal with. Looking at the rest of the results, I would apply that comment as a general across the board statement.

Soltek's motherboard retails at a new egg price of $76 - the version without LAN will apparently be sold for under $70. Asustek's $130 flagship adds an additional $54, which would buy you a Thoroughbred 1700+ and its cooling kit. Will this more for less attribute drive more enthusiasts to buy Soltek's better performing solution?

Soltek's overall performance lead is not earth shattering, but like everything else in this industry, perception is everything. Of the 14 benchmarks that were run, Soltek's board won 11 of them, drew 2, and lost only one. For the record:

Quake 3: Evenly matched results
UT 2K3: 5.5 to 11.1% lead
3D Mark 2K1: Wins by a nose
PC Mark... Read more

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Would it just clock the ram down and if so would there be a huge performance hit?



A:Dual-Channel Memory in Single-Channel Motherboard

They would work in a single channel motherboard, and it wouldn't effect the speed of the actual RAM however it would effect the overall speed because the memory wouldn't be able to send data back and forth as fast as it could in Dual-channel motherboards.

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Hi.. So as usual im an idiot and i looked into my case and am still debating if my ram really should sit right next to eachother and i started Speccy and it said that i had single channel ram 2 different channels with 16GB total. I got confused becouse the motherboard manual said i should put the ram like i did.. So now i moved one ramstick, Whent into bios to check if everything was working like it should and now i have dual channel 16GB ram 8x2.
This started a question.. What performance boosts does dualchannel give over single channel.. I know its better but just. In what cases will it be "better" and will you notice it? And in witch scenario will you notice it?

A:Single channel VS Dual Channel RAM performance boost?

almost all mother boards that have 4 ram slots have colour coding. the 2 the same colour, normally a space in between is the dual channel setup.

dual channel effectively doubles the memory bandwidth and halves the cache.

in real world terms youll get a 5-20% performance increase with dual channel when running bench marks.. you probably wont notice it in terms of speedyness though.

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I'm facing an unusual predicament at the moment. I currently have Windows 7 Ultimate installed on my custom tower. The tower runs an Intel Pentium 4 2.80 ghz, the OS is 32 bits, and initially was installed with one gig of RAM (2 512MB sticks) dual channel (DDR [1]).

Windows 7 wasn't sluggish, surprisingly, and I used the upgrade advisor to determine if my system was ready and I found it was. I was hoping to add a little "juice" so I tore into an old system and found a 1GB stick of DDR RAM. Now, I can change the dual channel configuration to single channel operation and run 2Gigs of RAM or I can keep the dual channel at 1Gig.

I've read on Tom's Hardware that the difference wasn't noticeable in dual vs. single but I also know that my processor was built for dual channel. Are there any recommendations? Make the single channel upgrade or keep the dual channel configuration?

At some point I will likely purchase another chip but for the time being I'm curious about anyone who has been in my position or knows memory well enough.

Thanks for any input!

A:Solved: Dual Channel/Single Channel RAM Question

depends on you applications. When math is very important, dual channel might out weigh more RAM. If the system is generally sluggish, then more RAM is more important than dual channel.

Honestly, With Vista/ 7... I'd bump to 2GB period.

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Hi, I currently have 2x2GB Corsair DDR3 1333MHz RAM which I had bought around 3 years ago. I am currently thinking of upgrading to 8GB. However, my vendor tells me that 2GB sticks are no longer available for Corsair and that I have to either get a 4GB or 8GB stick.

My current 2x2GB runs in dual-channel mode. If I buy an additional 4GB stick, it will run in single-channel. I use the desktop mainly for gaming purposes. So, I just need to know if mixing 2 modes will cause any problems?

A:Any drawbacks to mixing single-channel and dual-channel for RAM?

Shouldn't cause any problems assuming it is otherwise compatible.

The difference between single and dual channel is minimal for most usage scenarios. If the RAM you have now magically went to single channel 5 minutes from now, you likely wouldn't notice.

You could discard the 2 x 2 you have now and replace with 2 x 4 and get dual channel, but nothing at all wrong with instead spending that money on cigareets, whiskey, and wild, wild women. At least you'd have something to show for it.

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Hi guys,
I want to purchase more ram sticks for my desktop. It already has 3GB in it. 2x1GB sticks and 2x512MB sticks. I would like to take it all the way to 4GB. If I replace the two 512mb sticks am I better off getting a matched pair of sticks for dual channel. A matched pair in most stores seems to be more expensive than just buying two sticks of the same type. What is the difference? My motherboard does support dual by the way.
I think when I bought the two 1GB sticks I just bought 2 of the same make in pc world, but not a matching pair.
I would like to know, does it really matter?

Posted via Mobile Device

A:Solved: RAM choices. Dual channel vs single channel.

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This is probly a very simple question, but i'm after converting my ACER Aspire 5600 laptop from using Dual Channel RAM to Single Channel. I've been told you can do this in the BIOS, but i'm not exacly sure how. I've had a breif look on google but can't seem to find anything of any help.

Thanks a lot,
- Lee

A:Solved: Converting Dual Channel to Single Channel with RAM.

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I have a problem and I think it's memory related.

I read the post about "Dual-Channel Memory in Single-Channel Motherboard." But it didn't help, plus it was from 2005.

Here's my computer (it's old, I know. I don't have the money to upgrade all of it):
- Intel Pentium D 820 2.80GHz
- EVGA GeForce 7300 GS / 256MB GDDR2 / PCI Express
- Intel D101GGCL ATI Socket 775 MicroATX Motherboard
- 1 GB (2 x 512MB) PC3200 DDR 400MHz CL3 Memory
- Ultra 500-Watt power supply
- Windows XP 32bit

I recently bought a memory upgrade:
2GB (2 x 1GB) 184-Pin DDR SDRAM DDR 400 (PC 3200) Dual Channel Kit

My computer worked fine (minus the small memory amount) before I installed the new memory. After I installed the new RAM, my computer posted, got to the windows splash screen, got to the log in screen, let me log in, then loaded the OS. While loading the OS and launching other start-up programs, my computer froze. I restarted many times and it fixed it. It never got past a few seconds after loading the OS and a few programs.

I reinstalled my old memory and it worked fine again without a hitch.

What is the problem? Is it the fact that the new memory is dual channel and the motherboard is single channel? I re-read the specs of my mobo and it said that dual channel is optional. However when I go to the BOIS menu (F2 on startup) it says "single channel mode" whith the new dual channel kit is in. Is there something in the BIOS I should cha... Read more

A:Dual Channel memory in single channel board?

Well, I can say I solved my own problem.

After I spent the last 4 hours trying to find the problem. I ran a bunch of mem tests, cleaned the mem slots, etc... It turns out it wasn't a hardware issue at all. I was wiggling my mouse on start up and noted the time it froze... and every time it froze an application was launching in the system tray.

Turns out it was Norton F'ing Anti Virus....

The second it launched the computer froze. So I booted in safe mode and disabled the start up and all other functions of Norton. Rebooted in normal mode, and sure enough, it worked! Without a hitch!

Now here comes the Beach of it. Since I couldn't uninstall Norton because I disabled it (i.e. nothing would run because all the extensions, shells and services for it were dead), I rebooted in safe mode to uninstall, BUT Norton doesn't work in safe mode... WHAT!? The damn program specifically states in a condescending dialog box that you "must reboot in normal mode to access Norton... blah blah blah"

What kind of Virus program doesn't let you access it in safe mode? Isn't that the point, to run a virus scan in safe mode? Piece of crap! But anyways, I digress.

So now I finagled a way to run in normal mode without Norton launching to uninstall it. Uninstalling as we speak, actually.


To answer my own question:
Yes, dual channel kits work in single channel boards (Just make sure you uninstall Norton before you put the new RAM in, haha... Read more

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hello everyone this is my first post. any help would greatly be appreciated.

Well my question is can dual channel and single channel be used at the same time? My abit board supports single and dual channels. Right now I have one single channel stick of ddr memory. i'm thinking of adding memory, and i wondered if I get a dual channel set, can i still use the existing single memory stick? let me know thanks.

A:can dual channel ddr be used at the same time with single channel ddr???

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Hi, can anyone tell me if there could be a benefit buying 4 x 1 GB DDR2-800 DIMMs, as opposed to 2 x 2 GB DDR2-800 DIMMs? I know the difference between single channel and dual channel is pretty huge, but I'm not sure if it would matter going to quad from dual. I haven't found anything that really helps on the internet.

The reason I am asking is because 4 x 1GB DIMMS are about 25% cheaper than 2 x 2GB DIMMS, however for future upgrade purposes I will have to get rid of DIMMS with the 1 GB sticks, where with the 2 x 2GB I wouldn't. I think the differences between saving now and saving later when upgrading is negligible...so if there is a noticeable performance difference that would help choose.


A:dual channel and quad channel DDR2

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Well, as it says in the title:
Is single channel 1gb as good as dual channel 2*512 mb.

I have tried to add memory to my mobo, but something went wrong and now my mobo only sees the first memory module. Really, I've tried everything and now I give up to return to normal life until I buy a new system.

So at first I had 2 * 512 mb memory at 800 mhz, dual channel.
Now I have 1* 1g memory at again 800 mhz, but single channel.

So is that ok, or is running at single channel much inferior to dual channel, even if I have the same amount of memory?

A:single channel 1gb as good as dual channel 2*512 mb?

No. Single channel is NEVER better than dual channel. Dual channel is always better and runs faster.

read: http://www.techspot.com/vb/topic65114.html

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Heya, I'm new here, recently, my friend said I had a computer that could have a "dual DDR channel"? I dont know much about computers, and i wanted to know more, so he checked my computer with a program thats called "Cpu-Z" and it said my DDR channel was Single, even though all my "RAM" slots are filled with DDR 512mbs, any reasons why?

A:Switching from Single DDR channel to Dual DDR channel?

Well there may be a setting in Bios to set it for dual channel
Or even a little jumper on the Motherboard that must be placed on the correct pins

You will need to download your computer's (or motherboard's if it's not a name brand) Manual

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Hello forum first time here. I have a rather important question.

I currently have Corsair Vengeance memory in my PC

This memory is Triple Channel

I also have 8GB of GsKill dual channel memory. Since i have 1 extra slot left on my Mobo i was gonna use 1 of my old GsKill sticks to give my PC 14GB of ram. There identical except brand and dual / triple channel. Does Dual / Triple channel prevent these from working together?

Thanks in advance.

Corsair Memory Link: http://www.newegg.com/Product/Product.aspx?Item=N82E16820233146&Tpk=CMZ12GX3M3A1600C9
G.SKILL Memory Link: http://www.newegg.com/Product/Product.aspx?Item=N82E16820231193&Tpk=F3-12800CL9D-4GBNQ

A:Dual Channel & Triple Channel Question

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My system is abit IP35 quad core 2 q6600 running 4gb of RAM, all the same spec.

Win 7 64bit and Win 7 32 bit partitions.

I recently added 64 bit partition to run more RAM, so the slots 2 and 4 will have gotton dust in it as it was unused for ages.

If I wiggle the slot 4 in sometimes I get 8gb and dual channel RAM.

At the moment I have single channel and on 4gb, does that mean I am using 1gb of each of the 4 slots.

The ram is ddr2 2gb sticks x 4.

Do I need to clean the slot?

also Java based apps are crashing on 32bit and 64 bit.

Just clean the slot? what with, whats the best approach?



A:Single channel DDR2 but can run Dual channel

So magically I have 8gb and dual channel back.

But on the SPD tab the program only shows 2 slots in use.

Whats going on in my PC is it working like it should?

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Hi, I have 2x1GB DDR400 single channel memory. I was wondering if I could add 2x1GB of dual channel memory? So i would have 2gb dual 2gb single.

A:single channel and dual channel ddr400?

There's no such thing as dual channel memory,if the two sticks you've got now are exactly the same,then you can probably run them in dual channel.It depends on which slots you use,it's either 1&2 or 1&3.Check your manual to see,or post your motherboard make and model.Also,is there any reason why you want 4gb of memory.

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