EVGA 770 SC needs 42 amps? on 12v Rail?

MuffinMan87

Honorable
Dec 18, 2013
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10,510
I got a evga 770 sc and it says It needs 42 amps on a 12 v rail. So i bought a Corsair TX 650 w
because it has 43 amps on one rail but I have to RMA it because of the massive coil whine it has. I need my computer while the RMA happens. Can my old PSU work with my 770 sc? It is the Corsair VX 550 W.
DC Output- +3.3v +5v +12v -12v +5vsb
Max Load 30a 28a 41a 0.8a 3a
140w 492w 9.6w 15w

(those are the specs for the VX 550 W)
So my question is can I use my 550 w even though it has 41amps instead of the 42 needed for the 770sc.

Specs.
MSI P67a-gd65 (B3)
GTX EVGA 770 SC
8gigs Ram
i5 2500k
TX 650watt

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139004&cm_re=vx_550_w_corsair-_-17-139-004-_-Product (Link to my old 550w)

 
Solution
It doesnt need 42 amps, thats just a recommendation based on total system usage. the 770 itself will only take around 20 amps.

Your PSU should power the 770 fine.