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Corsair Dominator 6400C4 TwinX2048 And P5N32 SLI Deluxe Nforce 4 Intel X16


dmann304

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Ive been using this board for about a year know and was using the 5400c4 ram, but got a deal on the Dominator series 6400c4 800.

 

I got no lockups with the 5400C4 DDR2667 but when i went with the DDR2 800. I would get a lockup after sitting for awhile.

 

Games run good memtest passed tests and even did a driver install.

 

But when i leave the PC idle for awhile just screensaver, i would return and the system would be frozen.

 

I heard somewhere in the ASUS forums that this board is tested at 667 that 800 wasn't really compatible.

 

But i ran the memory at 800 and passed memetest and played games but why would it lockup after hours and bare in mind there is no over heating.

 

I have the PentiumD 940 3.2 also and i did move the FXB down to 667 but not sure yet what the results will be.

 

I was told also that this board was tested with these modules too and there should be no problem.

 

Is it true that i should run these at 667 with 2.1v?

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Why do i need to run it at 667? The Pentium D 940 is 800 i thought.

 

So if i link the 2 than where will it give me the option to overclock to cpu? And what timings can i adjust these modules to if a leave it at 667? Can I use 3.4.3.9?

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  • Corsair Employees

That is the design of the 590 Chipset:

 

RATIO

 

CPU Frequency:DDR Frequency

 

1066MHZ:667MHZ(800MHZ OC)

 

800MHZ:667MHZ

 

533MHZ:533MHZ

 

The chipset is not designed for 1:1(actually 1:2 ratio since the actual frequency of you CPU is 200MHZ and the RAM if DDR2-800 is 400MHZ)ratio. It will cause a bottle neck on the memory controller/chipset if you do it.

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