vilsonfarias Posted January 6, 2009 Share Posted January 6, 2009 Greetings, When I set my memory to run at 1066Mhz, memtest shows 2 errors in 3 passes. The computer posts, system starts, but occasionally it shows BODs or just hungs. When running at 800Mhz, everything works perfectly and memtest dont show any error even after 5 passes. My config is : - Asus P5N32-E SLI (BIOS v.0.906) - Intel Core 2 DUO 6600 - EVGA 8800 GTX Superclocked - Corsair TWIN2X4096-8500C5 (1066Mhz - 4096 Mb - 2 sticks) - Linked 1:1 (1066Mhz) - 5-5-5-15 2T 2.1 - USB Legacy disabled - All other config set to default values - PSU OCZ GameStream 850W Is there any other config or advice I should consider to get it work perfectly at 1066Mhz or do I have bad memory that should be replaced? Should I try other voltage than 2.1V? I read something about 1.95V. Is this a real good try? Any help would be appreciated. Best regards, Vilson Link to comment Share on other sites More sharing options...
DerekT Posted January 6, 2009 Share Posted January 6, 2009 Download memtest from http://www.memtest.org and extract the ISO image. Burn the ISO image to an CD-ROM disk. Perform a hard reset of your system. Shut the system downRemove the power cordRemove the CMOS BatterySet the CMOS_CLR Jumper to OnPress the power button for 10 secondsLet sit for 10 minutesSet the CMOS_CLR Jumper to OffInsert the CMOS BatteryInsert the Power CordRestart the systemEnter the BIOSLoad Default SettingsSave Default Settings and ExitInsert a single stick of DRAM in Slot 1 (Closest to the CPU) Shut your system down. Restart and enter your BIOS. Set to these values:AI Tuning = Manual Nvidia GPU Ex = Disabled LinkBoost = Disabled Extreme Tweaker Screen FSB & Memory Config[/b][indent]FSB - Memory Clock Mode = Unlinked FSB (QDR), MHz = 266 (1066) MEM (DDR), MHz = 533 (1066) CPU Configuration CPU Multi = 9 CPU Internal Thermal Control = Enabled Limit CPUID MaxVal = Disabled Enhanced C1 (C1E) = Disabled Execute Disable Bit = Enabled Virtualization Technology = Enabled Enhance Intel Speedstep Tech = Disabled Chipset Memory Timing Setting tCL = 5 tRCD = 5 tRP = 5 tRAS = 15 Command Per Clock = 2 clocks Advanced Memory Settings tRRD = Auto tRC = Auto tWR = Auto tWTR = Auto tREF = Auto tRD = Auto tRFC = 60 Async Latency = Auto Voltages Vcore = Auto Vdimm (DRAM Voltage) = 2.1v 1.2v HT = 1.2v NB Vcore = 1.45v SB Vcore = 1.55v CPU VTT = 1.35v Legacy USB = Disabled for Memtest, Enabled AfterwardsShut the system down. Boot to the Memtest CD and allow for two full passes. Shut the system down, remove the stick from slot 1 and insert it in slot 3 and retest with Memtest. If both sticks test stable, shut the system down and insert the second stick of DRAM in Slot 1 giving you one stick in slot 1 and one stick in slot 3. Restart the system and boot to the Memtest CD. Allow for two full passes. When assured of stable DRAM, then enter Windows and Run CPU-z and post screenshots of CPU-z's CPU, Memory and SPD tabs. Results? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 6, 2009 Corsair Employees Share Posted January 6, 2009 At this speed, you may need to raise your memory controller voltage 1 or 2 steps above the stock voltage. On this chipset, 1.4v is usually a good setting for this voltage. Link to comment Share on other sites More sharing options...
vilsonfarias Posted January 7, 2009 Author Share Posted January 7, 2009 DerekT and RAM Guy, I'd like to thanks you for the valuable help. I changed voltage settings, following your suggestions and now my machine is working perfectly. The RAM is now at 2.15V and I ran memtest for 11 hours (7 passes) and no errors where found. Here is my new config (changes in bold) : AI Tuning = Manual Nvidia GPU Ex = Disabled LinkBoost = Disabled Extreme Tweaker Screen FSB & Memory Config[/b]FSB - Memory Clock Mode =Unlinked FSB (QDR), MHz = 266 (1066) MEM (DDR), MHz = 533 (1066) CPU Configuration CPU Multi = 9 CPU Internal Thermal Control = Enabled Limit CPUID MaxVal = Disabled Enhanced C1 (C1E) = Disabled Execute Disable Bit = Enabled Virtualization Technology = Enabled Enhance Intel Speedstep Tech = Disabled Chipset Memory Timing Setting tCL = 5 tRCD = 5 tRP = 5 tRAS = 15 Command Per Clock = 2 clocks Advanced Memory Settings tRRD = Auto tRC = Auto tWR = Auto tWTR = Auto tREF = Auto tRD = Auto tRFC = 60 Async Latency = Auto Voltages Vcore = Auto Vdimm (DRAM Voltage) = 2.15v 1.2v HT = 1.2v NB Vcore = 1.45v SB Vcore = 1.55v CPU VTT = 1.35v Best regards, Vilson Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 7, 2009 Corsair Employees Share Posted January 7, 2009 Great and thanks for the follow up, please let us know if you have any more questions! Link to comment Share on other sites More sharing options...
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