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Prime95 and Sapphire 9800 Pro


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Hello everyone

 

This post may venture a bit into the OT territory but since quite a lot of posters have a similar setup as I do, I thought it would be appropiate to ask this question here. :)

 

My hardware profile is in my sig. Whenever I run Prime95, after 3-5 minutes, the screen becomes garbled. The machine itself does not crash. The CPU temps hit 59 C max (I will participate in the survey). I know this from logging on to my machine from another PC and observing the SmartGuardian readings.

 

Is this a symptom of PSU being overloaded? I noticed a few people are running 9800 Pro with 350 PSUs. Hence I will be very interested to know if they are experiencing the same type of problem.

 

Thanks very much in advance.

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The 9800's are pretty decent as far as power consumption goes but looking at the rest of your specs you are *really* pushing it for a 350watt unit, even a fortron.

 

Do you see these same artifacts under other load conditions (such as in a game where CPU + GPU + HD are all going at once)?

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Hi Toby

 

Thanks for the reply. I have not played any games on this machine as of yet. I just built it. However, I think you are right. When Prime95 starts, the +12v reading on SmartGuardian shows 9.xx. So I think I need to invest in a 400 W PS. :)

 

Thanks and take care.

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Guest culinist

Yes that would concern me too.If you have a muli meter you should check those rails first just to be sure, but I don't think that even smartguardian would be that far off.

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Originally posted by Ubermann

Maybe you forgot to connect the little 4 pin beside the cpu ?

 

Ubermann

 

Meet a class A moron: me. :)) Yes, for some reason, I had forgotten to do that.

 

Now there is no drop in +12v railing and there is no garbling of the screen when Prime95 runs.

 

Thank you very, very much.

 

Now I must go buy a dunce hat!!!!

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