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PSU for SLI GTX 280's?

post #1 of 10
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Title kinda explains it all, right now im only getting one gtx 280 but in the future i plan on getting a second what psu or at least how big of one do i need?
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My System
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e8500 3.16ghz evga 750i FTW evga GTX 280 SSC G. Skill DDR2 1066 (8gigs) 
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WD Caviar 640 vista spk1 home 64bit Gateway FHD2400 Logitech G15 
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post #2 of 10
1000W, 750 won't cut it. Two of those would use 500w just by themselves under load.
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Blackbox.
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post #3 of 10
My PSU is enough for what you need.
 
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X79 Build
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post #4 of 10
Quote:
Originally Posted by aawiscfan View Post
Title kinda explains it all, right now im only getting one gtx 280 but in the future i plan on getting a second what psu or at least how big of one do i need?
http://www.slizone.com/object/slizone_build_psu.html

These are the "certified" versions. I think they somewhat exaggerate these but this should give you an overall idea of what to expect.
post #5 of 10
Ultra X3 1000w should be decent. Gonna order one for my system later this summer.
Vapor
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Vapor
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post #6 of 10
One GTX280 is 236w so 2x is around 472w. They are all from 12v rails. Dependng on what else components you have, I would go for a good 850W psu.
post #7 of 10
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EK 480mm Radiator 2x XSPC Photon 170 D5 Pump/Res Combos 360mm Swiftech Radiator  Windows 10 64-Bit 
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post #8 of 10
A 750W may not cut it. Some 850W PSU's (like MHill2029's Silverstone Decathlon DA850) should be fine if the 12V Rail has enough Amps like that one.

I'd recommend the Ultra X3 1000W or Corsair 1000HX PSU, to name a couple.

The SLI Zone link hairston630 provided above gives a good list of PSU's recommended by nVidia. I believe the two above are on the list, as well as some under 1000W as well. But if you pick one from the list, I'd ask around here to make sure it's a decent PSU before buying.
Edited by Choggs396 - 6/30/08 at 7:01pm
    
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post #9 of 10
A quality 850, or even better the Corsair 1000 that ChrisB linked. It's a great PSU for the money. And it's modular!
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Trusty Old Rig #1
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post #10 of 10
Nvidia states that the minimum requirements for SLI 280's is an 800W PSU.

I would count on getting an 850 to 1000W PSU. Make sure there's enough amps on the rails. So get one with one rail or two rails each with over 30A
Le Photon
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Le Photon
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