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How can i tell if my PSU is under too much strses

post #1 of 7
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So i final updated my sig rig (look down), And surprisingly my TX650 runs it fine, However when everything is overclocked and i run furmark the psu starts...Hissing....is this normal? (It is not the normal coil whine i see under load)
And also is there any problems with using molex > 6 pin converters?
thanks
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post #2 of 7
The best thing to do is buy a wattage meter and measure how much power your rig is pulling. I don't know what's available in Europe, but in the US it's called Kill-A-Watt and costs about $20.
post #3 of 7
how many graphics cards have you got?

Why the molex to six pins?

Is it defos the PSU cos other things can whine to. my graphics cards to in bench tests
Edited by andrewmchugh - 3/10/11 at 11:28pm
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post #4 of 7
It isn't.
post #5 of 7
PSU should shutdown if overstressed but a hiss sound isn't normal (if not whining)


A 650w PSU should be able to handle your rig... just barely when overclocked.
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post #6 of 7
Quote:
Originally Posted by DuckieHo View Post
PSU should shutdown if overstressed but a hiss sound isn't normal (if not whining)


A 650w PSU should be able to handle your rig... just barely when overclocked.
That's at the wall. Assuming an 82% efficient PSU that's like 490W DC from the PSU.

Sounds about right, I estimate my rig at 450W DC.
post #7 of 7
A 650w is more than enough for two 5850's.
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