minimum psu requirement

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CPU up to 130W
Two GTX 680 cards (assume overclocked versions) = 450W
Other components = 50W
Total = 630W
You want to run the power supply at about 70% of rated power at full load.
630 / 0.7 = 900W

If your CPU is more energy efficient than 130W or the particular cards you choose are rated at less than 225W each, this could be less.
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VincentP

Splendid
Oct 18, 2013
4,105
1
26,965


CPU up to 130W
Two GTX 680 cards (assume overclocked versions) = 450W
Other components = 50W
Total = 630W
You want to run the power supply at about 70% of rated power at full load.
630 / 0.7 = 900W

If your CPU is more energy efficient than 130W or the particular cards you choose are rated at less than 225W each, this could be less.
 
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Solution
Sangeet Khatri

Sangeet Khatri

Honorable
May 26, 2013
2,640
1
13,460
850W should be safe for SLI no matter how much power the GPU sucks but it would be well within limit of 850W.

This is a very high quality PSU right now available for a lot cheaper. Get this, it is awesome. Also it is semi modular.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: SeaSonic M12II 850W 80+ Bronze Certified Semi-Modular ATX Power Supply ($79.99 @ Newegg)
Total: $79.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-28 02:28 EST-0500)

I hope this helps.
 
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