theblueproject Posted October 16, 2008 Share Posted October 16, 2008 Hi Guys, I believe this is all the information you require : XFX 790i Ultra SLi, Bios = version latest (p07) Intel Core 2 Quad Q9400 Socket 775 2.66GHz 1333FSB 6MB Cache TWIN3X4096-1600C7DHX (4GB total, 2 x 2048MB) Tagan 800W PSU Problem : Every other time I attempt to boot the machine, the motherboard beeps at code 26 (Init onboard clock generator and sensor) and then doesn't boot. If I soft reboot a few times the machine then eventually comes up and is stable for an unlimited amount of time. Can somebody please confirm what the correct settings are for my memory, I am currently running it at 7 -7 - 7 - 20 - AUTO 2T. Advanced Memory Settings : (ALL AUTO) tRRD 5 tRC 40 tWR 12 tWTR 18 tFAW 25 tREF 7.7uS tRFC 72 FSB Memory Clock Mode [unlinked] FSB (QDR) MHz 1333.3 MEM (DDR) MHz 1600.0 System Voltages (ALL AUTO) CPU Core 1.17V CPU FSB 1.1V Memory 1.500V nForce SPP 1.30V nForce MCP 1.500 Thanks for your help in advance! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 16, 2008 Corsair Employees Share Posted October 16, 2008 The memory Voltage should be 1.7-1.9 Volts for these modules on that MB Link to comment Share on other sites More sharing options...
theblueproject Posted October 17, 2008 Author Share Posted October 17, 2008 Doesn't appear to have made any difference, are all of those memory timings correct? Link to comment Share on other sites More sharing options...
DerekT Posted October 17, 2008 Share Posted October 17, 2008 Set your memory to linked. Your CPU FSB to 400 and your DRAM to 1600Mhz. Your timings are correct. See if this brings stability. Link to comment Share on other sites More sharing options...
theblueproject Posted October 17, 2008 Author Share Posted October 17, 2008 Derek, it doesn't appear to be a problem of stability, just intermittent boot. I will give this a try... I thought when it's linked they moved up and down in the same increments? I shall update all once tried. Many thanks, Blue Link to comment Share on other sites More sharing options...
theblueproject Posted October 18, 2008 Author Share Posted October 18, 2008 Set your memory to linked. Your CPU FSB to 400 and your DRAM to 1600Mhz. Your timings are correct. See if this brings stability. Linked? If they're linked you can't set them seperately. No fix so far. Any other ideas? Link to comment Share on other sites More sharing options...
theblueproject Posted October 20, 2008 Author Share Posted October 20, 2008 No further advice? I'm struggling to get a response from XFX... :( Link to comment Share on other sites More sharing options...
DerekT Posted October 20, 2008 Share Posted October 20, 2008 Linked? If they're linked you can't set them seperately. No fix so far. Any other ideas? Of course you can't set them separately when you are linked since the 400 and 1600 are linked. I was stating the values that the linking will bring. At any rate, this issue sounds like a mainboard problem. You can try to raise the Northbridge and see if this brings a boot stability. Memory = 1.6vnForce SPP = 1.40VnForce MCP = 1.7v But I doubt it as the issue applies more to mainboard BIOS than it does DRAM. Link to comment Share on other sites More sharing options...
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