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Corsair AX850 sufficient for 2 - Asus 580 Direct CU

post #1 of 24
Thread Starter 
Just want to be sure from a load perspective.

These Direct CU cards are ranked as the highest overclocking 580's and with their 3 slot coolers, (combined with aggressive binning), they can be pushed pretty far.

My second card comes in next week so I need to sure that the AX850 will not be straining under the load once I push these cards.

My cpu is at a modest 4.5ghz, with not much else drawing power.

These cards require 2x8 pin connectors (which is common on higher end power supplies).

I do have a couple of other power supplies (including an Enermax Revolution 1050w) that I could swap but would rather not go through the headache.

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Murder Box II
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post #2 of 24
Easily, bearing in mind you can run SLi570's (at a push) on a high quality 650w you'll be more than fine with the AX850
post #3 of 24
Yes, nice psu.
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post #4 of 24
Also long and you dont Furmark them more then enough. Seen some video reviews and GTX580s OC where pulling 600 - 780W for the wall so less then 700 actual so you are fine.
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post #5 of 24
Easily. Close thread.
yo this my rig yo
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yo this my rig yo
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post #6 of 24
Thread Starter 
Second card is in. Just have to go pick it up in the morning.

Looking forward to seeing what kind of overclocking results I will be able to get.
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Murder Box II
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post #7 of 24
OC'd cpu around 150W
2 gtx580's @280W max load each so = 560W
random case fans and stuff around 30W

So total psu wattage you need is around 750 with around 600W of that been on the 12V+ rails

2 GTX580's @ 280W= 560W
Power= Voltage x Current
Current= Power / Voltage
Current= 560 / 12= 46.6A <---you need a psu with atleast 48A on a single 12V+ rail or a psu with two 25A 12V+ rails.


Personaly i would aim for a 900-1000W power supply to get best efficiency

But your current psu meets the requirements
Edited by Jump3r - 3/25/11 at 6:17pm
 
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post #8 of 24
I would look at overclocking these cards as making love to a woman, do it slow, do it right and take your time, make sure you look at all angles before you go for the big clock. You don't wanna blow anything too early

Comps
post #9 of 24
Easily be able to do it, heck I bet you could Tri-Sli on that PSU
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post #10 of 24
I have one coming in as well An AX 850.
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