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850w PSU Recommendations - Page 2

post #11 of 35
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^ well psu's are most efficient at 50% load and the difference will pay itself in the 4 years or so that I will probably keep it. I will also have the luxury of knowing that I have enough power If I ever want to add other components.

Thanks all, I guess it would be betetr to stick with an 850w and the hx 850w seems to have extra pci-e cables and that's always welcome, though i do like the fact that the ax850w is quieter, this brings me to the corsair tx850w v2, I believe this unit is not modular? also is the tx850w v2 quieter than the hx 850?
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post #12 of 35
the HX series is bronze efficiency rating right? I would say the AX line from Corsair or the X line from Seasonic due to higher efficiency. They both feature the same internals so only difference is name/warranty length/price.

If you plan on crossfiring I think the most you'd need is 750W but getting the 850W would be a good investment.
Edited by Shogon - 10/28/11 at 5:27pm
post #13 of 35
I was in the same situation as you. I was chose the HX1050 over the AX850 simply because it was only $20 more and 200w more. Also with 2 580's on full load i can pull around 800w. With a single 6950 I'd go with a seasonic x750 personally, though.
 
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post #14 of 35
Quote:
Originally Posted by vitality View Post
I was in the same situation as you. I was chose the HX1050 over the AX850 simply because it was only $20 more and 200w more. Also with 2 580's on full load i can pull around 800w. With a single 6950 I'd go with a seasonic x750 personally, though.
True that about the amount 580s pull. Folding right now I average between 800-815W. 4.4 Ghz 1.41875V on the CPU, 850 core @ 1.1V on the 580s.
post #15 of 35
Quote:
Originally Posted by Shogon View Post
True that about the amount 580s pull. Folding right now I average between 800-815W. 4.4 Ghz 1.41875V on the CPU, 850 core @ 1.1V on the 580s.
That at the wall, after you factor in efficiency you're well below 750W
A standard BIOS GTX 580 will never pass ~320W due to power throttling, and that's in furmark, in gaming won't even get close to that.

@ OP, you don't need an 850W PSU, nvm the ridiculos HX1050 suggestion.. that's enough to run 4x 6950 in CFX on a SandyB platform

Where are you buying from and what is your budget?
post #16 of 35
Quote:
Originally Posted by Shogon View Post
the HX series is bronze efficiency rating right? I would say the AX line from Corsair or the X line from Seasonic due to higher efficiency. They both feature the same internals so only difference is name/warranty length/price.

If you plan on crossfiring I think theost you'd need is 750W but getting the 850W would be a good investment.
The HX850 can actually run at gold efficiency. Its rated silver though
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post #17 of 35
Ax850. Imo

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post #18 of 35
I'm happy with my HX850. I can't recall ever hearing the thing.
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post #19 of 35
Quote:
Originally Posted by BZ1891 View Post
^ well psu's are most efficient at 50% load and the difference will pay itself in the 4 years or so that I will probably keep it. I will also have the luxury of knowing that I have enough power If I ever want to add other components.

Thanks all, I guess it would be betetr to stick with an 850w and the hx 850w seems to have extra pci-e cables and that's always welcome, though i do like the fact that the ax850w is quieter, this brings me to the corsair tx850w v2, I believe this unit is not modular? also is the tx850w v2 quieter than the hx 850?
theres a difference of 3% between 50% and 100%, dont bother wasting money on it
post #20 of 35
Antec CP-850 is also a really good PSU. I had to throw in something that wasn't Corsair/Seasonic to break the chain.
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