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GTX 480 on spare 650w psu

post #1 of 38
Thread Starter 
EDIT: can i use my spare 650w psu with 24 amps just for 1 480?
Edited by TehStranger? - 7/30/11 at 2:59am
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post #2 of 38
Here's a quick quote:

"GeForce GTX 400 in SLI

A second card requires you to add another 250 Watts. You need a 850+ Watt power supply unit if you use it in a high-end system (1 KiloWatt recommended). That power supply needs to have (in total accumulated) at least 55 to 60 Amps available on the +12 volt rails."

Link: http://www.guru3d.com/article/geforc...-480-review/13
    
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post #3 of 38
I don't think you measure amps . More like wattage .
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post #4 of 38
Thread Starter 
okay well my psu is 750w and has 60 amps on a single rail,ive seen 2 people use 2 570's with it how do u think ill go?
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post #5 of 38
Had 2 480 on tx 750. then on ax 1200 then on ax850.
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post #6 of 38
The 570's consume less power so that's not a great benchmark for comparison. I honestly wouldn't risk it. The 750W psu would be pushing it. If you were to go ahead with the setup then you for sure wouldn't have any overclocking room.

Edit: Just noticed you have a GX750W, don't do it stick with a single card. The gtx 480's are real beasts.
Edited by McBean - 7/24/11 at 2:21am
    
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post #7 of 38
Thread Starter 
i done a psu calculator test and it says with another 480 it will pull 724w
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post #8 of 38
i ran 480 sli overclocked both at 1.1v and a heavily ocd phenom x6 1.4v with 1 hdd, 8 fans, h70 and dvd drive on a hx850 no problem!
    
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post #9 of 38
Quote:
Originally Posted by TehStranger? View Post
i done a psu calculator test and it says with another 480 it will pull 724w
PSU calculators aren't always the most trustworthy but they do give you a good idea of what to expect. If you're pulling 724 on a 750W psu then you're just barely squeezing by, I wouldn't be comfortable running that configuration.
    
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post #10 of 38
Yea as Mcbean has said a 850w is probably a good idea if your gaming only. If your going to run furmark 24/7 then you need a 1kw psu. A quality 750w will do at stock just barley but an 850w is seriosly what i would go for. Any lower and ur playing with fire
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