Windows 7: Phenom II x3 720BE problem

kurahk7 · 16 Aug 2010

Hey guys, I was tweaking voltages for the AMD Phenom II x3 720BE today and managed to lower it from the stock of 1.325v to 1.2v. I left the computer to run Prime95 and now after I came back from dinner the different processor cores are significantly behind each other (see atached pic). Is this because I gave it too less volts and it's trying to cope with it? I am also running it on the stock hsf.
Edit: Is it also safe to leave it at this current state?

josef613 · 16 Aug 2010

so did you leave it at stock speed?
Yes, lowering voltage could cause it to fall behind a little, but i have noticed that when i ran it before, one core was a slight bit behind the other

kurahk7 · 16 Aug 2010

Quote: Originally Posted by josef613

so did you leave it at stock speed?
Yes, lowering voltage could cause it to fall behind a little, but i have noticed that when i ran it before, one core was a slight bit behind the other

It's at stock clocks.

josef613 · 16 Aug 2010

yea, as long as you're not experiencing instability, you should be ok, although it might have better performance at stock voltages.

kurahk7 · 16 Aug 2010

Quote: Originally Posted by josef613

yea, as long as you're not experiencing instability, you should be ok, although it might have better performance at stock voltages.

I guess I'll just leave it running PRIME95 overnight to see if it's stable then. Thanks.

josef613 · 16 Aug 2010

alright, good luck.
you could also try stock voltage afterwards and see if it runs better

Wishmaster · 16 Aug 2010

If you used the PC for anything .. Internet browsing whatever while prime was running this can happen.

Also background tasks, AV scans etc.

It has to get CPU time from somewhere.

If Stable for 12hrs, I would think you're OK. The fact a couple threads are a step or 2 behind just means something needed CPU time from that core during the test and it fell behind in its work because of it. Nothing to worry about.

Lordbob75 · 17 Aug 2010

That is an interesting little tidbit there, thanks for explaining that Wishmaster.

Actually, leaving it at stock and dropping voltage sounds like a really good idea, especially with Intel CPUs.

~Lordbob

kurahk7 · 17 Aug 2010

Ok, I ran Prime95 for over 12 hours and it was completely stable but core number 2 was like 4 tests ahead of the other 2 cores, so I'll just assume that core number 2 is the stronger core unless MSE secretly ran a scan in the background while I was asleep. Temperatures also topped out at around 45C with the AMD stock cooler which is pretty good I think. Reps to all of you that replied

.

josef613 · 17 Aug 2010

Yea, MSE could cause 1 core to fall behind due to background tasks, but i'm glad that it's stable, and that is a good temp for the stock cooler.

Windows 7: Phenom II x3 720BE problem

Phenom II x3 720BE problem problems?