Seasonic platinum psu 660W can power up two 280X?

josefolsh

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Jun 26, 2015
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My specs:
i5 3470
8GB
MSI R9 280X
GA-H77-DS3H
SS Platinum 660W

Can I add another 280X and run it without any problems?
 

yeskay

Distinguished


No, you need a 900W PSU to handle 280X Crossfire. Single 280X itself requires 600W PSU.

Cheers!
 

According to PC Part Picker and Toms Hardware, the 290X draws around 300W each, so you'll want at least 750W total (the CPU draws around 80W, with other components being 50W tops, and you'll want to leave some headroom for PSU decay).

 

josefolsh

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Doesn't it count as a very good PSU?