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Old 30th Apr 2012, 19:30   #1
GregTheRotter
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750 watt psu for 580 SLI?

Is it enough? Was contemplating getting a second 580 at some point. Would my corsair hx750 be able to handle it plus
4 hard drives
1 ssd
2 dvd drives
i7 920 stock, but maybe oc'd to 3.6ghz
pci sound card
12gb ram
6 fans

-Greg
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Old 30th Apr 2012, 19:59   #2
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You'll be a bit close to the limit for comfort, you might get away with it for a while If you use Vsync to limit the framerate but it wouldn't be ideal.

Have a look here for more details.
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Old 30th Apr 2012, 20:05   #3
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You should be fine as i dont think my rig pulled more than 600w with sli gtx580's and an i7 920 @4ghz.
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Old 30th Apr 2012, 20:09   #4
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Could be pushing it a but there greg i'm running mine on a ax850,
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Old 30th Apr 2012, 20:10   #5
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I'm running my GTX 480 on a 400 Watt!
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Old 30th Apr 2012, 21:15   #6
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i would say no....i did look into this for my self. i would buy a 900w as you will have overclock room and cover for other stuff
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Old 30th Apr 2012, 23:10   #7
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no worries, a lot of people over spec psu's in terms of wattage.
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Old 1st May 2012, 08:19   #8
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Quote:
Originally Posted by Deders View Post
You'll be a bit close to the limit for comfort, you might get away with it for a while If you use Vsync to limit the framerate but it wouldn't be ideal.

Have a look here for more details.
Id agree with you on that
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Old 1st May 2012, 11:43   #9
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My 580s on a i7950 were close to 800 watts under furmark + ibt with water cooling loop for reference

Just 1hd 1 ssd in that computer
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Old 1st May 2012, 12:48   #10
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Quote:
Originally Posted by GregTheRotter View Post
Is it enough? Was contemplating getting a second 580 at some point. Would my corsair hx750 be able to handle it plus
4 hard drives
1 ssd
2 dvd drives
i7 920 stock, but maybe oc'd to 3.6ghz
pci sound card
12gb ram
6 fans

-Greg
Ok, there is a lot of exaggeration about system power usage. I ran 2 x 560Ti with 4ghz i7 860 with no problems on an enermax 625w. Consumption would vary in DX11 games between 400 to 620 watts but the PSU barely got warm.

A single 580 will use less than 2 x 560ti so even a 625 will suffice. I measure the system consumption with a mains meter.

A 750 is more than enough by some margin.
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Old 1st May 2012, 13:11   #11
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It seems nobody is reading the thread, I'm asking if TWO 580's plus my sig, would run fine on my 750 watt, not one.
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Old 1st May 2012, 13:17   #12
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Quote:
Originally Posted by GregTheRotter View Post
It seems nobody is reading the thread, I'm asking if TWO 580's plus my sig, would run fine on my 750 watt, not one.
Oh, I didn't bother reading your thread.

2 x 580's!!!!

Recommend at least 1300w PSU.

Seriously... 750 should be good.
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Old 1st May 2012, 14:20   #13
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get a 900w and relax... room for upgrades too
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Old 1st May 2012, 14:52   #14
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LOL. xD ta.
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Old 1st May 2012, 23:24   #15
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its always better to be safe. i have seen lodes of people saying 750w but also seen lodes saying 850w-900w i would always aim high when it comes to a psu
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