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Old 2002-10-25, 07:01   #2
Deamiter
 
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Sep 2002

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Sounds to me like the 100% CPU usage IS causing the noise. My guess is that some AC 'noise' is leaking into the sound card (or wherever the jack is). Actually, my first reaction is that the noise is caused by a 'droopy'power supply. Make sure your PSU can handle the load you're asking it to. If not, it could be sagging just low enough to cause some chips to malfunction. Actually that's happened to me before... I got a weird AC coming from a chip that wasn't powered quite properly. Anyway, the Folding@home wouldn't affect it because it's maxing out the CPU in a different spot perhaps?

Anyway, there's probably a better explination, but you might look at the voltages on your PSU wires to make sure they're not sagging too much.
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