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P5N32 SLi SE Deluxe and 2 pairs of TWIN2X4096-6400C5


tony_1985

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Hello!

I have a problem. I have the above motherboard, with a core 2 duo @ 2.7ghz and asus ge force 7950gx2. I used to have 2048mb of ram with O C Z DDR2 PC2-6400 Gold GX XTC Dual Channel (2 x 1gb). I just bought the - above mentioned - corsair memory (4 x 2gb) to run with windows x64 (which i was about to install after i put the new RAM modules.

When i did put the new modules in the motherboard, the bios posted, went to windows (vista ultimate x86). The computer then restarted (on its own), and the bios did not post. I tried a few more times but all i got was a black screen. i then removed 2 modules (leaving the ones in positions A1 and B1) to test if this would work, but again the bios would not post. after some experimenting, i managed to get in the bios and mess with the timings a bit. i tried to manualy run the RAM at 5-5-5-18, but when windows tried to start up i got a message that read something like "the registry is corrupt, and therefore windows cannot start" or something. then i tried to use the timings of my old RAM (O C Z) which was 5-5-5-15, but again after that, the bios would not post. Finaly i put the old RAM back on and after some trial and error managed to get my pc working again....

Is there a way to make my pc work with this particular Corsair modules or should i return it?

Thanks in advance for your help!

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You need to reset your CMOS when you install different memory. I assume that by 2.7Ghz, you mean a 2.66GHz Core 2 E6700?

Download CPU-z from
.

Download Memtest86+ Version 2.11 from--->

and extract the ISO image. Burn the ISO image to an CD-ROM disk.

 

Perform a hard reset to clear any BIOS stack corruption issues.


  1. Shut the system down
  2. Remove the power cord
  3. Remove the CMOS Battery
  4. Set the CMOS_CLR Jumper to On
  5. Press the power button for 10 seconds
  6. Let sit for 10 minutes
  7. Set the CMOS_CLR Jumper to Off
  8. Insert the CMOS Battery
  9. Insert the Power Cord
  10. Restart the system
  11. Enter the BIOS
  12. Load Default Settings
  13. Save Default Settings and Exit (Shut Down)

Insert 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
FSB - Memory Clock Mode = Unlinked
FSB (QDR), MHz = 266 (1066) For E6700 333 (1333) for 333Mhz FSB Core2
MEM (DDR), MHz = 333 (667)

CPU Configuration
CPU Multi = Auto
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 = 18
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)  = 1.9v
1.2v HT = 1.2v
NB Vcore = 1.45v
SB Vcore = Autov
CPU VTT = Auto

Shut 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 a stick in Slot 1 and 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?

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thank you very much for your reply! One thing i would like to note is that the new ram consists of 4 sticks not 2. Should i just extrapolate the procedure fo 4 sticks? i.e after i check slots 1 and 3 and have both in should i do the same for 2 and 4? if so, isnt it supposed to be that A1+A2 = B1+B2?

thanks

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With 4 X 2GB, you need to drop the memory speed and raise the memory controller voltage. I have made those changes above for you.

 

thank you very much for your reply! One thing i would like to note is that the new ram consists of 4 sticks not 2. Should i just extrapolate the procedure fo 4 sticks? i.e after i check slots 1 and 3 and have both in should i do the same for 2 and 4? if so, isnt it supposed to be that A1+A2 = B1+B2?

thanks

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