Please help! Prime 95 after overclock?

[SeanM]

I have been over clocking my system recently. To test stability and heat increases I started a run of Prime 95. Normally Prime 95 gets my CPU at 100% and it stays there. Now when I run Prime 95 the CPU usage jumps all over the place from 2% to 70%. I am concerned. Is this normal behavior or does it suggest system instability? Has anyone ever noticed this?

-Sean

 

[GuitarDaddy]

Which test are you running?

The first one "small files" pegs the CPU

The third one "blend" is all over the place

 

[cryptonomicon]

afaik prime is not continuous stress, rather it goes in bursts.
for example i run speedfan right next to it, the CPU temps are elevated, then normalize, perhaps a few times a minute.

 

[SeanM]

I am testing using the blend, but I thought Prime 95 would always use 100% CPU. Is it possible I cannot max out my CPU now that it is over-clocked?

Thanks for your assistance,
I am jsut scared I am pushing my CPU to far.

-Sean

 

[BlueWeasel]

I've never noticed CPU usage jumping all over the place when running Prime 95. What happens if you run the torture test using small FFTs (maximum CPU usage with minimal RAM tested)?

 

[SeanM]

If I run small FFt's I get the 100% CPU usage. I guess that's my problem. Thanks for the help.

 

[Duvie]

Originally posted by: cryptonomicon
afaik prime is not continuous stress, rather it goes in bursts.
for example i run speedfan right next to it, the CPU temps are elevated, then normalize, perhaps a few times a minute.

You and the most of others here are not running the right test to hold the stress....I run the small fft cause it does not stress the ram ( I leave that up to a better test, memtest86) and therefore holds the stress on the cpu...

I see no fluctuating...cpu task manager says 100% always and temps once I am into the program about a 1/2 hour or so will not fluctuate more then 1c for the next 2-1/2 days....

 

[Shimmishim]

Originally posted by: Duvie

Originally posted by: cryptonomicon
afaik prime is not continuous stress, rather it goes in bursts.
for example i run speedfan right next to it, the CPU temps are elevated, then normalize, perhaps a few times a minute.

You and the most of others here are not running the right test to hold the stress....I run the small fft cause it does not stress the ram ( I leave that up to a better test, memtest86) and therefore holds the stress on the cpu...

I see no fluctuating...cpu task manager says 100% always and temps once I am into the program about a 1/2 hour or so will not fluctuate more then 1c for the next 2-1/2 days....

exactly

dunno why eeryone runs blend test.

if you want to isolate it to cpu, you run small fft's just as duvie said.

 

[SeanM]

Thanks very much for the advice,

You have solved the probelm.

 

[MegaWorks]

Originally posted by: SeanM
Thanks very much for the advice,

You have solved the probelm.

:roll: