6 hours of Prime95 and 2.5 hours of OCCT.

Is this enough to say my processor is stable? Temperatures stopped increasing loooooooooooong ago. I accidentally messed up the Prime95 test - I was going to run it for a day, but needed access to my computer. Using my computer forced two of the workers to stop due to insufficient swap space/RAM.

No errors on either Prime95 or OCCT. The overclock isn't major. I bumped a Phenom X4 9750 from 200*12 to 225*12 on 1.36v. 1.36v is what my motherboard set the CPU to by default, despite the fact the factory spec for a Phenom is supposed to be 1.3v. I can't realistically overclock higher because this processor does not have an unlocked multiplier and my motherboard has no voltage controls.

I do need to smack some AS5 on it, though. The default thermal pad sucks - thing idles above 40C. Under extreme load (P95/OCCT), it gets up to 65C.

6hrs of Prime 95 is enough to say it's 'stable-ish' , but not guareenteed stable ( I've had it fail @ 9hrs, 14hrs, 20hrs etc )

12hrs is good. 24hrs is better.

If you don't want to do a longer run, just use the machine normally for a while and if you don't experience any random crashes or lockups, you can consider it 'stable enough'.