GTX 580 on my PSU? amp question

[Micktorious]

So I am currently running two MSI GTX 260 Twin Frozr OC in SLI on this http://www.newegg.com/Product/Product.aspx?Item=N82E16817182097 PSU, but I want to get direct x 11 going on this system and was looking into selling my 260's and getting 580, but I was confused by their 12v ratings of 42 amps, now I know that my PSU will combined do 67.5 but no single rails would carry a 42, they are all rated at 20 I believe but I didn't know how this would work on these newer cards, and didn't want to buy a GTX 580 to have it sit around until I can afford a new power supply. Any help is greatly appreciated.

 

[ko888]

So I am currently running two MSI GTX 260 Twin Frozr OC in SLI on this http://www.newegg.com/Product/Product.aspx?Item=N82E16817182097 PSU, but I want to get direct x 11 going on this system and was looking into selling my 260's and getting 580, but I was confused by their 12v ratings of 42 amps, now I know that my PSU will combined do 67.5 but no single rails would carry a 42, they are all rated at 20 I believe but I didn't know how this would work on these newer cards, and didn't want to buy a GTX 580 to have it sit around until I can afford a new power supply. Any help is greatly appreciated.

The Rosewill Xtreme Series RX950-D-B shouldn't have any problem powering a GeForce GTX 580.

The GeForce GTX 580 graphics card requires one 6-pin and one 8-pin PCI Express supplementary power connector from the power supply unit. The Rosewill Xtreme Series RX950-D-B has two 6-pin and two 8-pin PCI Express supplementary power connectors so that requirement has been met.

A reference clocked GeForce GTX 580 has a Graphics Card Power draw of 244 Watts. This means that the graphics card itself may draw up to a maximum of 20.3 Amps from the + 12 Volt rails. If the card is factory overclocked or user overclocked then the power consumption and current draw requirement will, of course, be higher.

 

[Micktorious]

Best answer selected by Micktorious.

 

[Micktorious]

Thank you very much ko888, the whole amp thing was new to me, and althought I knew the watts from my PSU enough, I was worried it my over-drive one rail, or one part of the PSU (don't know too much about inner PSU workings) and cause it to over heat, thanks for the info.