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Cm2x1024-6400 = Xms2-6400c5 ?? Help


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G'day All.

This is my first post and I need some clarity on what settings are the right ones for my ram. I have an ASUS P5K SE Mobo and CM2X1024-6400 ram which I bought in a 2Gb kit. The following info are on the ramstick as well:

1.9 V

ver 5.1



My question is, is my memory type then XMS2-6400C5 and if so why do they have the lat settings as 5-5-5-18 while mine (see above) shows -12.


I also want to know the if these are the correct settings for my setup: The Corsair Support Forums > General Corsair Topics > F.A.Q.

XMS Qualification and Testing!


Testing parameters for Twinx/XMS2-6400:

Twin2x1024A-6400 Data Sheet

Twin2x2048-6400 Data Sheet


Motherboard make and model: Asus M2N32-SLI Premium/Deluxe

Each pair is tested and packaged together using the following settings:

AI Over Clock Tuner: Manual

CPU External Frequency: Manually set to 200MHz

DDR2 SDRAM Clock: Manually set to 800MHz

PCI Express Freq: Auto

PCI Freq: 33.33

Performance Mode: Standard

DRAM Timing Selectable: Manual

SDRAM CAS Latency: 5T

SDRAM RAS to CAS Delay (tRCD): 5T

SDRAM Row Precharge (tRP): 5T

SDRAM Active to Precharge Delay (tRAS): 12T

SDRAM Write Recovery Time: 5

Write to Precharge Delay: 15 (If it's Listed)

Command Rate: 2T

DDR2 SDRAM Voltage: 1.9

Advanced voltage control

CPU Vcore offset:_Disabled

DDR2 Termination: 0.5x

CPU to NB HT:____1.200V

NB to SB HT:_____AUTO



SB Standby core:_+1.500V


Output driver control





All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.1


The problem that i'm having with my pc is that it works fine with just one stick in but as soon as i insert a second one i get a blue screen occasionally. I have run memtest which came up with no errors. Also ran Windows Memory Diagnostic which showed no errors in the standard and extended tests. However when i ran the standard test again this time with cache turned off in the first pass MATS+ failed.


I'm a bit baffled by all this so PLS help :confused:


PS: I forgot to mention that I get bluescreen either during startup or while play WoW.

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And the tested settings would have to be manually set Cas 5-5-5-12 at 1.9 Volts for XM2S-6400 & 6400C5. The modules SPD will be set to the JEDEC defined values Cas 5-5-5-18 at 1.8 Volts so they will post in most systems.
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