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PSU req. two gtx 460's SLI superclocked

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July 10, 2012 11:03:35 PM

Hey, I'm going to upgrade my PC this weekend. My current build is: GTX 460, i7-2600k (@ 3.4 ghz), 1 tb HD (7200 RPM) secondary 320 GB drive @7200 RPM, an MSI P67A-GD65 mobo, 16 gb of RAM @ 1600 mhz, and a corsair GS800 (800 watt PSU)

When I go to upgrade I was looking to get an SSD and a second gtx 460, since I'm not wanting to spend a million dollars for a new 670 or something I'm just going to SLI my curent card and have two of 'em as my GPU. I know this was probably a very long two paragraphs for one simple question so all I am asking essentially, is will an 800 watt corsair PSU power two gtx 460s with my current build? Thankyou soo much for taking your time to read this!!
a c 113 B Homebuilt system
July 10, 2012 11:55:39 PM

The two cards, running at absolute max, will never draw 400W.

Ref:
http://forums.atomicmpc.com.au/index.php?showtopic=264

The rest of your system will possibly reach 200W.

In practice, you won't pull more than 500W from the wall, and I would guess that most gaming will draw less than 450W total.

I would expect the Corsair GS800, whether the new or old version, to handle the load fine.
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a b B Homebuilt system
July 11, 2012 1:41:41 AM

Also keep an eye on your amps. The max power your GTX 460 would pull (at default clock speeds) Nvidia has listed as 160W, (160 Watts at 12 Volts is a maximum draw of about 13.5 Amps). If you have a CPU that is a 125W (About 10.5 Amps). So, make sure your power supply is capable of (2 cards & CPU) 13.5 +13.5 + 10.5 = 37.5 amps.

And the psu you're looking at, Corsair GS800, is a single rail with 65A so you're way ok, including the other upgrades you mentioned plus a few more I'm sure.
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July 11, 2012 2:01:45 AM

Alright thankyou both very much for helping me out here! I didn't want to go out and have to buy a new psu, :) 
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July 11, 2012 2:03:34 AM

Best answer selected by Dylan13198.
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