carmour Posted February 5, 2008 Share Posted February 5, 2008 I have built a new system: XFX nForce 680i LT MOBO 2cQ 6600 CM2X1024-6400C4 XFX GeForce 7600 GT 256Mb DDR3 Video WD 75Gb Raptor SATA Seagate 320Gb SATA Lite-on DVD-RW 20x Lightscribe Tsst DVD-RW16x Ulta XFinity 600w PS Windows Vista Business 64bit System runs fine with 2 sticks memory, but I wanted to geta additional performace, so ordered another 2 sticks of the same memory. When I boot with the 4 sticks, the system POSTs, then blue screens when windows attempts to start. Nothing is overclocked at this point, all memory timings are set auto by bios (4-4-4-12). Any ideas to help this boot with 4Mb? Thanks Link to comment Share on other sites More sharing options...
RASEVEN Posted February 5, 2008 Share Posted February 5, 2008 This kind of memory must run at 2.1 Volts. Does it run now at 1.8 V? (You can change it in the BIOS) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 6, 2008 Corsair Employees Share Posted February 6, 2008 And I would set the memory frequency at DDR667 and set the NB/MCH Voltage to +.05 Volts as well. Link to comment Share on other sites More sharing options...
carmour Posted February 6, 2008 Author Share Posted February 6, 2008 I've tried all suggested settings, even way less agrssive timings, to no avail. Maybe have a bad MOBO? Though, I tried the new sticks in place of the originals, worked fine. Also tried new ones and old ones in slots 2,3 instead of 1,2 - again each set works fine, just not all 4 at the same time. Guess I may have to stick with 2Gb instead. Any other thoughts? Charlie Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 7, 2008 Corsair Employees Share Posted February 7, 2008 Can you tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set? When you had all four installed? Link to comment Share on other sites More sharing options...
carmour Posted February 7, 2008 Author Share Posted February 7, 2008 has all settings changes made during attempted upgrade to 4Gb: With 2Gb (2x1024 set) sticks - codes are 3498028(9) / 0801006 / ver 2.1 Set Bios to 'Load Defaults' values are: CPU multiplier (9x) PCIe x16-1 100 PCIe x16-2 100 SPP-MCP Ref Clock 200 Ht multiplier NForce SPP -> MCP 5x NForce SPP <- MCP 5x CPU Spread Spectrun - Disabled PCIe Spread Spectrum - SPP (Auto) Ht Spread Spectrum - Disabled PCIe Spread Spectrum MCP - Disabled SATA Spread Spectrum - Disabled --- SLI-Ready Memory - Disabled FSB - Mem Clock Mode (Auto) Memory Timings (Optimal) Settings: 5,5,5,18, 2T tRRD-3, tRC-22, tWR-5, tWTR-9, tREF 7.8us Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 7, 2008 Corsair Employees Share Posted February 7, 2008 Please do not post reports that is not what I need to see, I was asking for the exact BIOS settings you have set? Link to comment Share on other sites More sharing options...
carmour Posted February 7, 2008 Author Share Posted February 7, 2008 Sorry, here are the BIOS values only: SLI-Ready Memory - Enabled and set to CPUOC 0% FSB - Mem Clock Mode (Unlinked) Memory Timings (Optimal) Settings: 4,4,4,12, 2T tRRD-3, tRC-22, tWR-5, tWTR-8, tREF 7.8us --- CPU multiplier (9x) PCIe x16-1 100 PCIe x16-2 100 SPP-MCP Ref Clock 200 Ht multiplier NForce SPP -> MCP 5x NForce SPP <- MCP 5x CPU Spread Spectrun - Disabled PCIe Spread Spectrum - SPP (Auto) Ht Spread Spectrum - Disabled PCIe Spread Spectrum MCP - Disabled SATA Spread Spectrum - Disabled --- Limit CPUID Maxval - Disabled Intel Speedstep - Disabled PPM - Native Mode CPU Thermal Control - Disabled C1E Enhanced Halt State - Enabled Execute Disable Bit - Enabled Virtualization - Enabled Logical uP1 - Enabled All CPU Cores enabled --- Voltages: NTUNE shows: CPU Core - AUTO - 1.27 1.313v FSB - AUTO - 1.2 1.2v Memory - Set to 2.1 2.1v SPP - AUTO - 1.25 1.250v --- CPU freq.: 2400 CPU multiplier - 9x FSB - Memory ratio (Auto) 1066 FSB QDR Mhz - 1066.7 Actual 1066.7 Mem DDR Mhz (Auto) 800 Actual Mem Mhz 800 --- System Bios Cachable - Disabled HPET - Enabled Nvidia GPU Ex - Enabled Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 7, 2008 Corsair Employees Share Posted February 7, 2008 With 4 modules you would need to disable legacy USB and set the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and the NB/MCH Voltage to +.05 Volts and I would just let the BIOS set the timings and then test with http://www.memtest.org. Link to comment Share on other sites More sharing options...
carmour Posted February 11, 2008 Author Share Posted February 11, 2008 My MOBO manufacturer found the following Microsoft 'fix' (maybe) for this problem: h ttp://support.microsoft.com/kb/929777 that addresses the IRQL_NOT_LESS_THAN_OR_EQUAL problem on machines running Vista (64 bit) and trying to use more than 3Gb. It seems that Vista has a problem itself addressing more than 3Gb memory. Will let you know if this fixes it... Charlie Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 13, 2008 Corsair Employees Share Posted February 13, 2008 Yes if you have Windows Vista with more than 3 Gig you will need that patch. Link to comment Share on other sites More sharing options...
JVG9 Posted March 22, 2008 Share Posted March 22, 2008 I have same problem Running Windows XP Pro 32 bit , xfx 680i LT SLi , Intel Q6700 CM2x1024-6400C4. the 2 slots closest to the cpu will not work at all and will not post with ram in those slots. any ideas. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 23, 2008 Corsair Employees Share Posted March 23, 2008 RMA the MB and or CPU but I would test the CPU in another system to be sure, but if it is an Intel platform MB for sure RMA the MB. If it is an AMD platform I would check the CPU in another system to trouble shoot. Link to comment Share on other sites More sharing options...
JVG9 Posted March 24, 2008 Share Posted March 24, 2008 i have the system running. The cpu and all ram sticks are good. just cant have anything in the 2 ram slots closest to the cpu. Link to comment Share on other sites More sharing options...
DerekT Posted March 24, 2008 Share Posted March 24, 2008 i have the system running. The cpu and all ram sticks are good. just cant have anything in the 2 ram slots closest to the cpu. RMA the motherboard. You have board issues. Without the two first DRAM slots, you can not run with Dual Channel Mode and are running in Single Channel Mode. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 24, 2008 Corsair Employees Share Posted March 24, 2008 I would send the MB to the manufacturer to check. Link to comment Share on other sites More sharing options...
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