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Do I need a new PSU?

Hartacus
Level 10
I have everything listed below. I saw multiple PSU calculators and each one gives me a very different answer. I want to get another 7970 and crossfire. Will my 800w be good enough?
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4 REPLIES 4

TenBlade
Level 11
...and you´ll probably also get different answers. It would probably be enough, but what about wear and tear and so on, a higher rated psu would not struggle to keep up. If funds are not the issue, I´d get a 1050 or 1200 W to be on the safe side. If money is tight I´d just try and see.

Arne_Saknussemm
Level 40
The cards can draw quite a bit of power... http://www.legitreviews.com/article/1834/11/ especially benchmarking if you OC them a bit and if you OC your CPU you might find yourself at the limit of that PSU quite easily. It supplies 65A on 12v rail = 780W ....500w for the cards 200 for everything else....I would upgrade it or leave everything at stock.

X-ROG
Level 15
Should be fine on a CM 80Plus Gold. Depends how much extra your i7-960@4.1+X58(10W) pulls versus the legit reviews 2011 system, but I doubt it's 100W more. Probably 50W more and even then you're not gonna be running Furmark.

HiVizMan
Level 40
That PSU will be fine, I assume it is not very old. Remember PSU's start to degrade after a couple of years, and should be swapped out or at least monitored with caution after the 3rd year. Unlike diamonds PSU are not forever.
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