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I recently bought a new CPU (i7 860 Lynnfield), mobo Gigabyte GA-P55-UD4P, and RAM (2 kits of GSkill 2x2gb DDR3-1333). I installed everything into my existing system. Formatted hard drive and installed Windows 7, etc etc.
I installed Windows 7 successfully but have since been plagued by seemingly random BSODs (sometimes the screen would just distort and the computer would restart instead of displaying a BSOD). These BSODs would sometimes occur before even logging into Windows, sometimes after 10 minutes. Sometimes I could play GTA4 for hours, and then browse the net, and shut down normally with no problems.
When this first started happening I instantly thought it was a memory problem. I boot up MemTest 86+ and get tons of errors (thousands after 10-15 minutes). So I test each stick individually and each one runs for 3+ hours each with no errors. I then ran some more tests with 2 DIMMs being used, some with all 4 being used and I sometimes I got errors, sometimes I didn't. Couldn't come up with a pattern.
So I then think it's a bad mobo. I admit that I got a little antsy here and instantly RMAed it for a new mobo. I wait 2 weeks and finally get to install everything again and alas, I have the same problems. I flashed the bios to F4r and it seemed to fix it, some default frequencies changed and MemTest86 ran for several hours with no errors. But alas, a day or two later windows BSODed again and MemTest86 turned up a ton of errors.
Someone suggested I test my hard drives with Drive Fitness Test, so I did with no errors.
So right now I'm trying to tweak the memory timings to see if I have some bad defaults or something. I increased the B2B setting from Auto to 12. MemTest is ran with that for several hours and only reported 24 errors.
I don't know much about memory timings in general, what else can I tweak to try and make this problem disappear?
Current settings in BIOS (all these are AUTO unless I say I set it manually:
Memory:
9-9-9-24
tRC 33
tRRD 4
tWTR 5
tWR 10
tWTP 21
tWL 7
tRFC 74
tRTP 5
tFAW 20
CMD 1
B2B CAS Delay 12 (manual)
Round Trip Latency 52
Voltages:
CPU Vcore 1.175 (manual)
DRAM 1.600 (manual)
Others:
Base Clock Control 133Mhz
Memory Frequency 1333Mhz
CPU Clock Drive 800mV
PCI Express Clock Drive 900mV
CPU Clock Skew 0ps
Temps:
CPU 24C
PCH 39C
I installed Windows 7 successfully but have since been plagued by seemingly random BSODs (sometimes the screen would just distort and the computer would restart instead of displaying a BSOD). These BSODs would sometimes occur before even logging into Windows, sometimes after 10 minutes. Sometimes I could play GTA4 for hours, and then browse the net, and shut down normally with no problems.
When this first started happening I instantly thought it was a memory problem. I boot up MemTest 86+ and get tons of errors (thousands after 10-15 minutes). So I test each stick individually and each one runs for 3+ hours each with no errors. I then ran some more tests with 2 DIMMs being used, some with all 4 being used and I sometimes I got errors, sometimes I didn't. Couldn't come up with a pattern.
So I then think it's a bad mobo. I admit that I got a little antsy here and instantly RMAed it for a new mobo. I wait 2 weeks and finally get to install everything again and alas, I have the same problems. I flashed the bios to F4r and it seemed to fix it, some default frequencies changed and MemTest86 ran for several hours with no errors. But alas, a day or two later windows BSODed again and MemTest86 turned up a ton of errors.
Someone suggested I test my hard drives with Drive Fitness Test, so I did with no errors.
So right now I'm trying to tweak the memory timings to see if I have some bad defaults or something. I increased the B2B setting from Auto to 12. MemTest is ran with that for several hours and only reported 24 errors.
I don't know much about memory timings in general, what else can I tweak to try and make this problem disappear?
Current settings in BIOS (all these are AUTO unless I say I set it manually:
Memory:
9-9-9-24
tRC 33
tRRD 4
tWTR 5
tWR 10
tWTP 21
tWL 7
tRFC 74
tRTP 5
tFAW 20
CMD 1
B2B CAS Delay 12 (manual)
Round Trip Latency 52
Voltages:
CPU Vcore 1.175 (manual)
DRAM 1.600 (manual)
Others:
Base Clock Control 133Mhz
Memory Frequency 1333Mhz
CPU Clock Drive 800mV
PCI Express Clock Drive 900mV
CPU Clock Skew 0ps
Temps:
CPU 24C
PCH 39C
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