Can my PSU handle it?

Hello all,

I'm looking to build a new i5-2500k system and would like to re-use my PSU if at all possible. It is a Corsair HX620W, one of the first PSU's made by Corsair. I'm only unsure about my GPU choice which is a GTX 570. According to the info I could find the GTX 570 requires a 550-watt power supply with a minimum of 38 amps on the +12 volt rail. The documentation for the HX620W says it provides a combined 50A on triple +12V rails. I have 2 x 6 pin pci-e connectors so I know I have the cabling but my concern is with +12V rails (triple vs single). So can this PSU safely run (1) GTX 570 or do I need to upgrade? Thanks in advance.
3 answers Last reply
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  1. You'll be fine.
  2. Actually, newegg puts it at 18 amps on one rail. I don't really understand what that means; for all I know, the card may draw from all three somehow. However, an insufficient power supply won't damage your system. At worst, it'll crash a few times and you'll have to get another.
  3. Newegg lists all three rails at 18A, just like the sticker says.

    If you look at the sticker it shows that 600W is available on the 12v rails. 600W / 12V = 50A. If you need 38A and you have up to 50A, you'll be fine. (which is what I already said.)
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