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How much watts for 580 + 2500k high overclocks

post #1 of 12
Thread Starter 
I was thinking I could get away with 750w but 850w would be optimal. I do NOT plan on doing SLI at all.

Would the Corsair 850hx be ok for this setup?

Planning to grab the 580 lightning 1.5gb and clock it as high as it goes.

Also, I have a Corsair GS700 atm, would this be ok with the 580 at stock clocks until next paycheck?
    
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post #2 of 12
I'm running a 2600k + TWO 580 Lightnings with an AX850 and its just about perfect. 850W is overkill for a single 580 but would be good to have in case you decide you want to SLI later on (you say you don't now but you never know)...
post #3 of 12
Thread Starter 
Quote:
Originally Posted by Majin SSJ Eric;14281321 
I'm running a 2600k + TWO 580 Lightnings with an AX850 and its just about perfect. 850W is overkill for a single 580 but would be good to have in case you decide you want to SLI later on (you say you don't now but you never know)...

Yeah I guess it's a possibility for later on. I'm just really short for time, don't want to spend any time configuring sli profiles.
    
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SS 6Gv2  EVGA 1300G2  Arc Midi R2 Zowie AM, many opticals 
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post #4 of 12
Nothing to configure. Two 580's at stock clocks will obliterate any game. I haven't run into any games so far that have had issues with SLI (except Crysis 2 but the 1.9 patch fixed it for me)...
post #5 of 12
OP You'd be more than fine on a good quality 650w.

People always massively overestimate how much W they need.

*edit* also going from your GTX570 to a 1.5gb GTX580 isn't worth the money. Especially considering how highly OC'ed your GTX570.
Edited by Cyph3r - 7/20/11 at 8:22am
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post #6 of 12
Your GS700 should do just fine. But instead of buying a 580, why don't you buy a second 570 instead?
But a 850w Corsair HX or AX is enough to use high clocked 580's/570's and you 2500K at high clocks, so no worries there (Also for future 6-8core cpu's should be no problem) smile.gif
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post #7 of 12
A quality 550W would do you fine.

But most people opt for 650W PSU's with high overclocks on their CPU and 580.
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post #8 of 12
I have a 580 at 1.1 and 910 core and 1.3 on my 2500k and cannot get my rig to pull over 400w on a Kill-a-watt (I know they arent the most accurate but still)

I have tried everything possible, folding on both, gaming and prime, linx and furmark and nothign over 400.
post #9 of 12
you dont need the 580, but If you want to go all the way a good 550(if you want to live fairly dengerously) or a 600/50 will be fine. You dont need 750 for a 580 and an i5.
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post #10 of 12
Your current GS700 is perfectly fine to run that setup forever, no need to change it. As others have said, you'd be fine on a good 550W unit.
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