GTX 780 PSU Requirements

Dark Comet

Distinguished
Jan 15, 2008
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Hello,

Now seems like a good time to buy a GTX 780 with the recent price drop just announced. I currently have a HD5850 and a Cosair 620HX PSU. The PSU has 3 x 12v rails at 18 amps each I have read. I assume I add these together to get the total output of the PSU? My PSU is about 5 years old so it may not perform as good as the original specifications say but I assume this thing should run a GTX 780 fine, shouldn't it?

Thanks in advance for any help!