Overclocked FX-8120 behaving weirdly

P

Pyotr

New Member
Hihi.
I've mentioned this to some of you pros, but neither could help me. :(

I have overclocked my AMD FX-8120 to (so far) 4.3 GHz. Seems stable so far, will try for a bit more eventually.

In any case, when I run Prime95 blend test to stress test the machine, CPU-Z says my core speed is anything from 1999 (just saw that, a new low) to 5600 MHz. It just swings around wildly all the time. When I am idle it says 4.x (whatever I was overclocked to before) as it should be. When running SmileMan's and spirit's benchmark it says the correct speed until the end where it goes down a bit before finishing. It doesn't swing as wildly, nor does it go above the set speed.

Why does it do that? I have, as far as I know, everything disabled that should be disabled in BIOS.

For those that have disabled signatures, I have a Gigabyte GA-970A-UD3. My BIOS version is F4, and I hope updating that won't help because setting up this clock will be annoying. :p

Any way to fix this?
 
Pyotr said:
Hihi.
I've mentioned this to some of you pros, but neither could help me. :(

I have overclocked my AMD FX-8120 to (so far) 4.3 GHz. Seems stable so far, will try for a bit more eventually.

In any case, when I run Prime95 blend test to stress test the machine, CPU-Z says my core speed is anything from 1999 (just saw that, a new low) to 5600 MHz. It just swings around wildly all the time. When I am idle it says 4.x (whatever I was overclocked to before) as it should be. When running SmileMan's and spirit's benchmark it says the correct speed until the end where it goes down a bit before finishing. It doesn't swing as wildly, nor does it go above the set speed.

Why does it do that? I have, as far as I know, everything disabled that should be disabled in BIOS.

For those that have disabled signatures, I have a Gigabyte GA-970A-UD3. My BIOS version is F4, and I hope updating that won't help because setting up this clock will be annoying. :p

Any way to fix this?
Click to expand...

is there something powersaving not disabled?
Because maybe with prime it's jumping between the powersaving mode and the power mode.
In my benchmark It should be on his max.
Try running the intel burn-in test and let us know what it does.
 
I don't think so. I have disabled all power saving I can find, and some other things as well.
Will download the burn-in test. I have heard funny things about it. :p
 
Pyotr said:
I don't think so. I have disabled all power saving I can find, and some other things as well.
Will download the burn-in test. I have heard funny things about it. :p
Click to expand...

:P
I think I made my benchmark more intensive then that burn-in test :D
The Xtreme pass has 32 threads running :O.
 
That burn test has up to 128 threads. :p Remake your benchmark!

The speed changes a bit, but it doesn't go above the set speed and it doesn't flail about wildly when doing Intel Burn Test.
 
Pyotr said:
That burn test has up to 128 threads. :p Remake your benchmark!

The speed changes a bit, but it doesn't go above the set speed and it doesn't flail about wildly when doing Intel Burn Test.
Click to expand...

you can't have above 45 threads :P, tried it before. Pc crashed every time :D
 
It seems stable, yeah. Not at 4.5 GHz though. :p But I got it stable at 4.3. Stability isn't the issue, the values shown in CPU-Z are. I'm thinking they signal a problem of some sort.
 
You got a old bios on it. Update the bios and disable AMD APM Master Mode and Core Performance Boost.
 
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