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do i need a new psu?

post #1 of 5
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I have an ultra 500W psu in my comp right now. but i plan on upping to an Asus a8n-sli and two 78Gts. will my psu handle it without problems? and what will the life range be? or do i need to up to 600+ watts?
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post #2 of 5
the wattage of the PSU does not matter as much as the amps available on the 12V rails for the gt cards especially. another point of concern is getting a psu with high power efficiency factor, meaning that the psu converts power it receives without wasting it too much.

check ur current psu and if its not sufficient the new one must have at least 24Amps for single gt card and 32Amps for dual gt card sli setup. look for high efficiency psu which is quoted in %.
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post #3 of 5
It will probably work, but then again ultra psus aren't always known for their stability
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post #4 of 5
it will probably work... how many amps are on the 12v rail? if its over about 32A you should be fine with 2 7800's....
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post #5 of 5
Quote:
Originally Posted by soloz2
It will probably work, but then again ultra psus aren't always known for their stability
If I'm not mistaking that PSU has 34a on the 12v rail ...... this review gave it a 4/5 and they say its rock stable!

http://www.extremeoverclocking.com/r...Connect_1.html
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