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ASUS M2N-E with 2x CM2X1024-6400


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I have a a ASUS M2N-E motherboard with 2 x CM2X1024-6400 ram modules on it. edit: not a twin pair!


With the following timing settings it will work:


5-5-5-12-T2 @ 800 Mhz, 1.9v


according to the spec, it should be able to run at T1. When I enter this setting in my bios, my computer does not boot anymore. I sometimes see my BIOS logo screen, but it crashes before I can even enter the bios.


I also tried both modules separately.


Do I have a chance they will run at T1 when I increase the voltage to 1.95 (motherboard max) or the timing to 5-5-5-18? or are there any other options


and what would be faster? 5-5-5-15-T2 or 5-5-5-18-T1?


Thanks in advance,




edit2: it seems that one of the modules is a CM2X1024-6400C4 (according to CPU-Z)

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The Command Rate (1T vs 2T) is a function of the on CPU memory controller, not the DRAM. The DRAM is passive and only stores and retrieves data. With two different sticks, you are lucky to make Dual Channel mode and often, the CPU does not wish to work at the 1T command rate even when the sticks are perfectly identical.


5-5-5-15-T2 will be slower than 5-5-5-18-T1? But this is on memory bandwidth benchmarks. In reality, with a digital stopwatch, running and loading programs and data, you will not see much of a differentiation.

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