Why is my CPU stable in Windows, but not in Linux?

[SickBeast]

I recently overclocked my Opteron 165 to 2.7ghz from 2.5ghz with a new cooler.

It seems to be Orthos stable, but in Linux it's freezing after a few minutes.

Is this normal? Should I back off a bit, or is it a sign of a problem in the Linux software?

Thanks.

:beer:

 

[Dravic]

vista or XP

if its stable in xp, it might be the memory. Linux much like vista, caches and pre caches a lot of things in memory, and doesnt give it back until asked for by another application. might be writing something sensitivy to a bad segment of memory.

 

[SickBeast]

Originally posted by: Dravic
vista or XP

if its stable in xp, itmight be memory. Linux much like vista caches and pre caches a lot of things in memory, and doesnt give it back until asked for my another application. might be writing something sensitivy to a bad segment of memory.

XP.

Thanks very much. My memory timings were messed up during a recent near-death experience on the part of my CPU. I'll try to fix it.

 

[dbcooper1]

Run an extended Memtest86 on it to rule out or confirm.

 

[SickBeast]

Originally posted by: dbcooper1
Run an extended Memtest86 on it to rule out or confirm.

Actually memtest passed fine at the settings where Linux was unstable.

This is strange.

Perhaps there are errors that memtest/Prime aren't picking up.

 

[quadomatic]

I doubt there's anything wrong with your system. Orthos and Memtest are probably fine.

Ubuntu is far from perfect. There's a damn good chance that it's not your hardware, but just the kernel has some buggy driver.

Hardy Heron used to cause kernel panics on my system because the wireless drivers included with Ubuntu were so messed up.

Try Fedora or openSUSE. Ubuntu is nice, but you can probably move up to these, and I don't think you should have any problems. I would personally recommend openSUSE, since I didn't have as many issues with package management in openSUSE.

 

[Fox5]

It could be a 64 bit versus 32 bit issue. Maybe some part of the cpu that's not used or not stressed as much unless in 64 bit is being utilized in 64 bit linux. Or possibly one of the SSE instruction sets that windows wouldn't make big use of on its own.