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Can my Corsair 620W hold up with two HD4870's?

S

SOSTrooper

Platinum Member
Normally I can answer my own questions on computers, but I would like some opinions on this one. Here is my planned i7 build:

Intel i7 920
Asus P6T Deluxe
Corsair Dominator 6GB DDR3
2x Sapphire 4870 512MB Crossfire
WD Velociraptor 300GB
Samsung DVD burner
Thermaltake V1 CPU fan (with 1366 clips)
Antec P182 (four 120mm fans)

I have a Corsair 620W in my current rig now, and am wondering if it is borderlining on the load and if I should just go ahead and buy the Corsair 850W instead. Thanks in advance.
 
My system has 3 hard drives, q6600 @ 3.2GHz, a single 4870, water pump, optical drive, 3 fans on the radiator, 4GB RAM, with the same 620W Corsair PSU. Measured from the wall is 360W under load. Assuming 80% efficiency that is just under 300W load on the output of the PSU.

You should have no problem.
 
Thanks. I should've done some searching before posting, but I suppose for anyone that is wondering about the same thing, this Anandtech article uses the i7-965, Asus Rampage board, 6GB of DDR3, and varies combination of video cards and posted power consumption of the entire system under load.

With 4870 X2 it comes under 430W, which is very similar to the 471W that this PSU calculator had quoted me. So I think I can keep using my 620W in my new build.
 
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