GTX 770 SLI Power consumption.

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shalleth

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Dec 21, 2014
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I have just brought 2 GTX 770s and would like to SLI them.

currently I have a 750W psu, would this be good enough to run them?
im also running an i7 4770k as well if that needs to be taken into consideration. (id imagine it would)
 
Solution
jimthenagual
One of the more accurate ways to determine how many watts you need is to look at each component's thermal design power, or TDP and add them up.

i7 4770K TDP: 84W
GTX 770 TDP: 230W x 2 so 460W
Rest of system 100W
Overhead 150W

So 794W

You could get away with a 750W but you'd be pushing it a bit. I'd say a good 850w would be a good target.

Look at the XFX 850W or the eVGA G2 850, both great PSUs and a decent price.
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jimthenagual

jimthenagual

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Apr 8, 2012
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One of the more accurate ways to determine how many watts you need is to look at each component's thermal design power, or TDP and add them up.

i7 4770K TDP: 84W
GTX 770 TDP: 230W x 2 so 460W
Rest of system 100W
Overhead 150W

So 794W

You could get away with a 750W but you'd be pushing it a bit. I'd say a good 850w would be a good target.

Look at the XFX 850W or the eVGA G2 850, both great PSUs and a decent price.
 
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