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Can my PSU handle it?

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May 2, 2011 11:40:12 PM

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.

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a c 83 ) Power supply
May 2, 2011 11:47:50 PM

You'll be fine.
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a b ) Power supply
May 2, 2011 11:56:55 PM

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.
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a c 83 ) Power supply
May 3, 2011 12:19:43 AM

Newegg lists all three rails at 18A, just like the sticker says.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

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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