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Antec quattro 850w PSU for 480 SLI - Page 4

post #31 of 54
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Quote:
Originally Posted by TwoCables View Post
I think so too.
damn it I really thought the 580 draws less power than the 480... Im sure 580 SLI can even be run on a quality 750w PSU.

Quote:
Originally Posted by TwoCables View Post
However, I'm worried that it may not be able to handle this system with two GTX 580s in it due to its age. So you can either get a brand new high quality 750W, or an 850W for even more headroom.
Quote:
Originally Posted by TwoCables View Post
Anyway, a quality 850W power supply will be more than enough for this system with two GTX 580s in it.

^^ [SOURCE]

Im confused, now your saying an 850w might not be enough for overclocked 580s.

This kinda helped you CAN run gtx 480's and an OC'd proccessor on an HX850!
Edited by munaim1 - 6/10/11 at 3:33pm
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post #32 of 54
Quote:
Originally Posted by munaim1 View Post
damn it I really thought the 580 draws less power than the 480... Im sure 580 SLI can even be run on a quality 750w PSU.






^^ [SOURCE]

Im confused, now your saying an 850w might not be enough for overclocked 580s.

This kinda helped you CAN run gtx 480's and an OC'd proccessor on an HX850!
I made that post back in April. I've since been corrected.

Look for grunion's posts in that HX850 thread. Overclocking the GTX 480s or 580s would result in requiring a PSU with a slightly larger capacity.
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post #33 of 54
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
I made that post back in April. I've since been corrected.

Look for grunion's posts in that HX850 thread. Overclocking the GTX 480s or 580s would result in requiring a PSU with a slightly larger capacity.
gotcha,
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post #34 of 54
Quote:
Originally Posted by munaim1 View Post
damn it I really thought the 580 draws less power than the 480...
That is definitely true, 580s are more power efficient than 480s. 480s were a little ridiculous, and the 580 is what the 480 should have been really.
post #35 of 54
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Quote:
Originally Posted by Shub View Post
That is definitely true, 580s are more power efficient than 480s. 480s were a little ridiculous, and the 580 is what the 480 should have been really.
well in that case why is it that some say an 850w (tpq850) will be good enough for stock 480s but not good enough for overclocked 580s

EDIT: by the way what is the power consumption difference between 480s and 580s?
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post #36 of 54
At stock speeds, the difference can be 40-70W at load, depending on the kind of load.
post #37 of 54
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Quote:
Originally Posted by Shub View Post
At stock speeds, the difference can be 40-70W at load, depending on the kind of load.
what about overclocked?
480 @ 850core running vantage vs 580 @ 850core running vantage?

What do you think?
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post #38 of 54
It's always hard to estimate power consumption when overclocking comes into play -- if you don't mess with your voltages though, there shouldn't be a huge jump. I don't imaginme the gap between the two cards would vary much, just their respective consumptions would be raised a little obviously.
post #39 of 54
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You know what guys thanks for all your help, but im gonna give it a try and see what happens. Worse thing that could happen is that it shut's off.

Thanks again
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post #40 of 54
That is reasonable
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