amurmann Posted January 15, 2009 Share Posted January 15, 2009 I've got a new Asus P5QC and two new modules of each TWIN2X4096-6400C4DHX and TWIN2X2048-6400C5DHX. If I install the 4096 modules I get huge amounts of memory errors. It doe snot matter in which slot they are and if I install both modules or only one or install them together with the 2048 modules or alone. The 2048 modules on the other hand work perfect in every slot. I am running the modules under 800Mhz with 2.1V I would like to test the modules in a system known to work but don't have any way to do that. Fry's where I bought the modules wants $39 for the test which I am unwilling to pay since I bought the modules for about $60. Other local stores charge even more. Any ideas on this anyone? Link to comment Share on other sites More sharing options...
DerekT Posted January 15, 2009 Share Posted January 15, 2009 Download Memtest86+ V2.11 from--->Hereand extract the ISO image. Burn the ISO image to an CD-ROM disk. Download CPU-z from Here .I wouldn't try to mix and match the modules together. Insert one stick of the 2GB module in the first slot closest to the CPU. Enter your BIOS, Load Setup Defaults, Save Setup Defaults and set to these values: AI Overclock Tweaker Configure System Performance Settings Ai Overclock Tuner = Manual CPU Ratio Setting = 9 FSB Strap to Northbridge = 333 FSB Frequency = 333 PCI-E Frequency = 100 DRAM Frequency = DDR2-800 DRAM Timing Control = Manual DRAM Frequency = DDR2-800 DRAM Command Rate = 2N CAS# Latency = 5 RAS# to CAS# Delay = 5 RAS# PRE Time = 5 RAS# ACT Time = 15 Row Refresh Cycle Time (tRFC) = 55 All Else to Auto DRAM Static Read Control = Auto DRAM Dynamic Write Control = Auto DRAM Read Training = Auto DRAM Write Training = Auto Mem. OC Charger = Auto Ai Clock Twister = Auto AI Transaction Booster = Auto DRAM CLK Skew on Channel A1 = Auto DRAM CLK Skew on Channel A2 = Auto DRAM CLK Skew on Channel B1 = Auto DRAM CLK Skew on Channel B2 = Auto CPU Voltage = Auto CPU PLL Voltage = Auto FSB Termination Voltage = Auto DRAM Voltage = 1.9v NB Voltage = 1.35v SB Voltage = Auto PCI-E SATA Voltage = Auto Load Line Calibration = Auto CPU Spread Spectrum = Auto PCIE Spread Spectrum = Auto CPU Clock Skew = Auto NB Clock Skew = Auto CPU Margin Enhancement = Optimized Memory Remap - Enabled Legacy USB = Disabled (For Memtest, Enabled After Memtest) Run Memtest for two full passes. Shut down and remove the stick. Place it in the third slot and test it again. Then insert the second stick in slot one and test it alone. Finally, insert one in slot one and one in slot three and retest. 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...
amurmann Posted January 16, 2009 Author Share Posted January 16, 2009 Thank you very, very much for your help! However, I tried to follow your advise and things somehow got worse than ever. I built in the 2048 modules in the first slot and the screen just stayed black and not even a beep came from the computer. After almost 3 hours of trying it turned out that things work perfectly with the smaller modules in the second slot pair from the CPU and everything else results in the screen staying black. This behavior is new and I guess something more must be wrong than just the RAM... However thanks again for your help! Link to comment Share on other sites More sharing options...
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