![[H]ard|Forum](/styles/hardforum/xenforo/logo_dark.png){kind=logo}
Last night after replacing the motherboard in my pc, I had an odd problem. I ran orthos for about 30 minutes with a small OC (e8400 at 3.6), came back, started clicking around in vista, and the computer spontaneously powered down. Tried to turn it back on and it would start to post, and then shut down. I got into the bios once and then the screen turned solid bright red for some reason.
I took out my sound card and one of my two GTX280s, cleared the CMOS, and it powered up fine. Then I put the second GTX280 and sound card back in, and everything has been fine EXCEPT i've been seeing some odd voltages in speedfan while running orthos.
MOST of the voltages are rock solid. The +12 is at 12.14 with .01 variance, and most of the others also only vary by .01 under load (VCC3V = 3.23, Vcore = 1.11, +5v = 5.13, +12V = 12.14, VSB3V = 3.23, Vbat = 2.93).
The ones I am concerned about are these:
VCC1.5V = .90 (tiny variance, but shouldn't it read 1.5v?)
VRAM = starts at 1.8, after 30 minutes of orthos it is currently sitting at 1.55 and stabilized there
Vchipset = starts at 1.00, after 30 minutes of orthos it is stabilized at .83
Does it seem like my PSU might be bad or is there some other explanation? The shutdowns and dropping voltages make me think PSU, but most of the voltages as I said are completely rock solid. Also, after I got it working again last night, I played mirror's edge for about an hour with no crashes/issues and it was using the CPU near 100% and stressing both gfx cards too. I'd think twin GTX280s would pwn the PSU if it was pwnable.
The ONLY other possible thing I can think of is that when I reseated the video cards, the 6 and 8 pin PCIE might have been combined differently (maybe causing one voltage rail to be overloaded?).
System is:
msi p7n platinum
antec 850 watt truepower quattro
gtx280 2x sli
e8400
2x2gb corsair dominator 1066
I took out my sound card and one of my two GTX280s, cleared the CMOS, and it powered up fine. Then I put the second GTX280 and sound card back in, and everything has been fine EXCEPT i've been seeing some odd voltages in speedfan while running orthos.
MOST of the voltages are rock solid. The +12 is at 12.14 with .01 variance, and most of the others also only vary by .01 under load (VCC3V = 3.23, Vcore = 1.11, +5v = 5.13, +12V = 12.14, VSB3V = 3.23, Vbat = 2.93).
The ones I am concerned about are these:
VCC1.5V = .90 (tiny variance, but shouldn't it read 1.5v?)
VRAM = starts at 1.8, after 30 minutes of orthos it is currently sitting at 1.55 and stabilized there
Vchipset = starts at 1.00, after 30 minutes of orthos it is stabilized at .83
Does it seem like my PSU might be bad or is there some other explanation? The shutdowns and dropping voltages make me think PSU, but most of the voltages as I said are completely rock solid. Also, after I got it working again last night, I played mirror's edge for about an hour with no crashes/issues and it was using the CPU near 100% and stressing both gfx cards too. I'd think twin GTX280s would pwn the PSU if it was pwnable.
The ONLY other possible thing I can think of is that when I reseated the video cards, the 6 and 8 pin PCIE might have been combined differently (maybe causing one voltage rail to be overloaded?).
System is:
msi p7n platinum
antec 850 watt truepower quattro
gtx280 2x sli
e8400
2x2gb corsair dominator 1066
