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TWIN2X4096-8500C5D settings


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I purchased the Corsair Dominator TWIN2X4096-8500C5D pair for my Asus motherboard.

First, I guess that this motherboard doesn't understand EPP settings, right? Because, it seems that the memory comes up as DDR-800 rather than 1066.

So I figured that I set everything manually in the BIOS (not an expert yet at this, that's why I am asking...). I set the 5-5-5-15-22-2T according to EPP/SPD spec and leave the rest as 'Auto'.

Now when I boot the system and inspect the memory in CPU-Z, the settings doesn't seem to stick. If I remember correctly they show up as 5-7-7-38... or something.

Since I am little bit new to this, could someone of you experts in the area please advice me as how to make this memory operate at the desired spec?

Why does my PC 'revert' the settings in the BIOS? Should I set ALL the timing parameters manually, if so to what? (that is, what are the rest of the setting apart from 5-5-5-15?)


Thanks in advance

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Looks like you got the timings right but you also need to set the frequency to 1066Mhz and the main important part is setting up the voltage at 2.1. See details below:


Clear you bios back to standard defaults and start fresh!

Memory Frequcny at 1066Mhz

Memory Voltage: 2.1v

TCL: 5


TRP: 5

TRAS: 15

Command Per Clock: 2T

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Thanks for the reply,


Two questions on this:

In the BIOS, I have the choice of specifying 400 or 533, which I thought is the value x 2 for the clock speed. I don't see the choice of specifying 1066 directly. Does this make sense, or am I missing some BIOS menu?


Also, I don't see the ability to specify the exact voltage, only 'overclock' setting. I figured that this would be the offset based from 1.8V. I entered +300mV in order to achieve 2.1. The system booted up but I still saw the 'reverted' values in CPU-Z. Does this make sense?



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The memory frequency may shows as 400MHz for DDR800 or 533 MHz for DDR1066 so that is normal and the memory voltage will be listed under where you set the CPU VCore and will say DDR or DRAM Voltage , DO NOT adjust the reference voltages.
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