alexankius Posted October 25, 2007 Share Posted October 25, 2007 Hi, I have a p5wdg2 mobo with a qx6700 and a pair of 8500C5D (total of 2Gb). No matter what I do I can not make the memory perform stably at their rated 1066, not even close. It only performs stably at around 950mhz. Even more strangely with automatic settings, the memory reports 6-6-6-15-22 (whereas it should be 5-5-5-15-22) Could you please advise of settings that would best work. Link to comment Share on other sites More sharing options...
DerekT Posted October 25, 2007 Share Posted October 25, 2007 You have the Intel D975XBX2 mainboard? What BIOS? What is your Vdimm set to? What is your MCH set to? Are you upclocking the board at all? What version is the DRAM (on the modules)? I note that in the motheboard manual : http://download.intel.com/support/motherboards/desktop/sb/biosglossarybymenu_v07.pdf That this board wil accept no greater than 1.9v. If that is the case, you can not apply the correct voltage for those modules. You need 2.2V for version 1.xx and 2.1V for version 2.xx Link to comment Share on other sites More sharing options...
alexankius Posted October 25, 2007 Author Share Posted October 25, 2007 I have an Asus P5WDG2 Pro. The only thing i'm doing is upping the multiplier that shouldn't affect the system anyhow. I am happy to use any recommended settings, i just want to make the memory work at the speed it should Link to comment Share on other sites More sharing options...
DerekT Posted October 25, 2007 Share Posted October 25, 2007 You need to set the DRAM Vdimm (Voltage) to 2.2V for version 1.xx and 2.2V for version 2.xx That's a 975 chipset and was never created for Core2, so you may wish to raise your MCH voltage 0.5v as well Change the "Configure DRAM Timing by SPD" to disabled and set: 5-5-5-15 Set your DDR2 to 1066Mhz Link to comment Share on other sites More sharing options...
alexankius Posted October 25, 2007 Author Share Posted October 25, 2007 yep i've done all that and more. Nothing seems to work I just installed a pair of ocz xlc PC9200, everything works just fine... its infuriating.. by the way the motherboard clocks very nicely with 4ghz on a quad core and no problems. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 25, 2007 Corsair Employees Share Posted October 25, 2007 With just two modules and a models that are way over spec I would suspect they would. Link to comment Share on other sites More sharing options...
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