850w PSU for a Crossfire Radeon 280x game system?

Leightonius

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Mar 26, 2014
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The quick question: Will 850 watts suffice?

I'm going to be upgrading my system to a crossfire setup with two Radeon 280x video cards and I'm trying to determine how much power I need. I used the PSU calculator here which gave me a total of 790 watts a peak load. I'd like to stick with 850 watts since I can get a higher quality PSU for my price range, otherwise I have to sacrifice quality to grab a 1000 watt PSU.

Other relevant specs for my system:
- Intel Core i5-3570k
- 2x ASUS Radeon 280x
- 2 Sata HDDS, 1 SDD
- 4 200mm fans, 1 120mm fan

I am currently targeting Corsair's HX850.
 

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