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1000 watts psu for 780 ti. - Page 2

post #11 of 14
1000w is "too much". It won't be very efficient at all. But it's up to you whether you want to keep it or get one with a reasonable wattage that would have much better efficiency.
    
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post #12 of 14
Quote:
Originally Posted by tolis626 View Post

I think that was Linus, but I could be wrong.

Lots of people have. If you head over to the SFF clubs on various forums you'll spot 780s, 780ti's and Titans all being run on the Silverstone SFX 450W power supply with no problem. Doesn't leave any room for overclocking, but plenty are running 450w with the top end single GPU cards.

But yeah, 1000 watts is way overkill.
post #13 of 14
Quote:
Originally Posted by 66racer View Post

Think it was oc3d....let me see....yup

Only 430 W at the wall. Assuming 85% efficiency, 365.5 W from the PSU. Considering that the card isn't overclocked (or am I mistaken?), you could probably draw another 50 W with a good overclock. Replace the i5 with an i7 and you might be over the limit although the PSU probably won't shut down 'til you're quite a bit past 450 W. Surprising to say the least.

I wonder if you could stick a dual-GPU card in there. An R9 295 X2 could probably cause issues.
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post #14 of 14
My Sig rig pulls like ~460 from the wall. With CPU at 4.5 and GPU at 1200mhz.

1000w power supply is fine. I used to have 570sli, but no killawat meter at the time to read total draw.

Don't forget to look at 12v rail amps when you're figuring out power requirements. Would probably only matter if you were running SLI.

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