I built my computer about two years ago using the following parts:
i7-920 w/ Scythe Mugen Cooler
Asus P6T
OCZ 1333mhz
Crossfire ASUS Radeon 4850
Corsair 650w PSU
Everything worked alright, except I ran the RAM at 1066mhz instead of 1333mhz. I ran it at 1066mhz because it was more stable. I thought that I just had some bad RAM at first, but even after RMA I couldn't get my RAM to run faster than 1066mhz reliably. I then read some posts about how terrible OCZ Gold memory was and chalked it up to that.
However, I recently I purchased Corsair XMS3 12GB 1600Mhz to replace the OCZ Gold that I had before. I installed the new sticks and set them up using XMP profiles. I booted up the system and all sticks were recognized and running alright. I then ran Prime 95 (torture test) to make sure everything was working.
Prime 95 crashed in less than 3 seconds. I changed some RAM settings including manually setting the timings and choosing the other XMP profile which had a higher QPI voltage. Even after all that I could never get Prime 95 (torture test) to run for more than a few seconds before my system crashed.
Thinking it was the memory I ran the Windows Memory Diagnostic and chose an extended scan from the advanced options (I didn't have any CD's lying around to run Memtest+). This completed two passes and didn't find any errors.
Then I booted up my machine again and ran Prime 95 on the setting that states it mostly tests CPU and not much RAM. I was able to run Prime 95 under this setup for about 10 minutes without any problem. I then switched Prime 95 to the "some RAM tested" setting and ran the test. My computer crashed after about 2 seconds.
The fact that my RAM was able to pass a memory diagnostic leads me to believe this is not the culprit, which leaves me with either the CPU or the motherboard. Any ideas how I can narrow it down or any other ideas as to what might be my problem?
i7-920 w/ Scythe Mugen Cooler
Asus P6T
OCZ 1333mhz
Crossfire ASUS Radeon 4850
Corsair 650w PSU
Everything worked alright, except I ran the RAM at 1066mhz instead of 1333mhz. I ran it at 1066mhz because it was more stable. I thought that I just had some bad RAM at first, but even after RMA I couldn't get my RAM to run faster than 1066mhz reliably. I then read some posts about how terrible OCZ Gold memory was and chalked it up to that.
However, I recently I purchased Corsair XMS3 12GB 1600Mhz to replace the OCZ Gold that I had before. I installed the new sticks and set them up using XMP profiles. I booted up the system and all sticks were recognized and running alright. I then ran Prime 95 (torture test) to make sure everything was working.
Prime 95 crashed in less than 3 seconds. I changed some RAM settings including manually setting the timings and choosing the other XMP profile which had a higher QPI voltage. Even after all that I could never get Prime 95 (torture test) to run for more than a few seconds before my system crashed.
Thinking it was the memory I ran the Windows Memory Diagnostic and chose an extended scan from the advanced options (I didn't have any CD's lying around to run Memtest+). This completed two passes and didn't find any errors.
Then I booted up my machine again and ran Prime 95 on the setting that states it mostly tests CPU and not much RAM. I was able to run Prime 95 under this setup for about 10 minutes without any problem. I then switched Prime 95 to the "some RAM tested" setting and ran the test. My computer crashed after about 2 seconds.
The fact that my RAM was able to pass a memory diagnostic leads me to believe this is not the culprit, which leaves me with either the CPU or the motherboard. Any ideas how I can narrow it down or any other ideas as to what might be my problem?