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I'm trying to use 4 CM2X1024-6400 in the same MB with AMD 64X2 5200. I've used settings I've got from two different Corsair techs but neither work for all four banks. This is what I got back from Asus level 1 support tech and this is after I let them know I had tested all four DIMMs to make sure they were good:



Make sure the memory is selected for all 4 channels of memory banks.

Some memories are selected only for dual channel.

Check the Qualified Venders List (QLV) on the user's guide for the MB.


Also contact the memory manufacturer (OCZ) and ask them if they test the memory on this MB. Also they can give you the memory timing to manually configure the memory in bios.



Unfortunately we cannot validate every manufacturer’s memory; we have to rely on them to validate their memory with our boards. To find out which memory is compatible, please contact the manufacturer to see if they have approved this memory with the board you have or are considering.


When we design our MB we follow the chipset maker's spec with regards to memory. We do val! idate the memory IC maker's reference designs with our MB to make sure they are up to spec and to see if we need to add support for higher density ICs.


Most memory module makers do not follow the IC maker's reference designs so they may use any ICs on their memory module. There is nothing wrong with this, but if they deviate from the IC maker's reference designs (or even if they use the IC maker's reference) they should do some level of validation to insure quality.


Here is a list of memory manufacturers that use our motherboards, as well as others, to do this type of testing, and who will post a guarantee that their memory will work in our motherboards, as well as others. Please check the following websites for compatibility:










If you are having problems with the memory that you have installed into the motherboard please start by running Me! mtest86 on the system. To do this, go to:


http://www.memtest86.com < br>

and click on revision 3.0. You will be prompted with two choices after this, one for Linux and one pre-compiled for Dos/Windows. Download the pre-compiled for Dos/Windows to your desktop and unzip or extract all files to a single folder. In this folder, click on the "install.bat" file and a Dos window should come up asking you to choose a target drive (If the Dos screen comes up and then immediately goes away then all of the files were not extracted to one folder. Please create a new folder, then drag and drop the files into it.). Choose A: and insert a blank formatted floppy disk.

This program installs on the floppy very quickly and the program cannot be viewed from inside the Windows OS, as it is based on a Caldera Dos program. If you try to view it and can't, don’t panic; the program is there.


Re-boot the system to this floppy disk and the program should automatically start. The amount of memory in your system will determine how long the tests ! take; you want the program to complete at least 7 passes (for systems with a large amount of memory this can take several hours—you may want to run this test overnight). If after the 7 passes you have no errors then you can rule out the memory as a problem.

If you start getting a multitude of errors please try removing the memory, down to a single stick if using more than one, or if only using one try a different DIMM slot to see if the problem persists in the alternate slot. If using multiple sticks, try each stick individually to determine if you have one or more bad sticks. This will help you determine if you have a bad DIMM slot or bad memory.

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You have posted on someone else's thread so I split if off to start you own thread.

All that is great but it does nothing to help us help you solve the problem.

Please list your complete system configuration and have you tested the modules one at a time to see if you might have a failing module?

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