Problem with 4 sticks of Dominator 8500C5D and Gigabyte MB

[PFabrice]

Hi all,

 

I have 2 similar setups :

Gigabyte GA-EP45-DS3R MB

Intel E8400

Nvidia Video (one 9600, one 8800)

 

I have bought 4 pairs of CM2X1024-8500C5D.

I have tested all pairs separately with memtest : they work fine at nominal settings, ie : 2.1V 5-5-5-15 and 1066MHz. On both MB.

 

But if I try to put 2 pairs (4 sticks) on the same MB, then the setup won't pass memtest anymore. I had various problems under Vista that led me to investigate potential RAM problems.

 

So for the moment I'm stuck with 2x1Gb per machine and I have 4 sticks that I can't use. Any help to get 4x1Gb running reliably on this MB would be greatly appreciated. Or any explanation why this is failing.

 

Thanks in advance,

 

Fabrice

[Wired]

Lower the speed to 800 to ease the stress on the memory controller, or replace them with TWIN2X4096-8500C5D.

[PFabrice]

Thanks for the tip, but that doesn't work either. I tried it at 800MHz (5-5-5-18 in auto mode). Memtest still fails when I put 4 sticks. Strangely, when I put 2 sticks in either the red slots or the yellow ones, everything is running ok, even at 1066.

 

So I start to wonder about an MB bug. What do you think ?

 

Best regards,

 

Fabrice

[RAM GUY]

With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and set the NB/MCH/SPP Voltage to +.2 Volts as well and test the system with http://www.memtest.org. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test.