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Anyone running SLI 560's on 700W? - Page 2

post #11 of 30
Quote:
Originally Posted by TwoCables;12342792 
Being that NVIDIA recommends a 500W to power a system with a single GTX 560 in it, I'm absolutely not surprised that a 700W can power a system with two 560s in it. Even a quality 600W would be enough.

I think the reason why people recommend way more than is actually needed is just because they don't know enough, and plus it seems like too many people immediately think that the newest graphics cards will consume way more power than their older counterparts.

that, or they plan to keep using the same PSU for several years and want to have ample wattage headroom for electrolytic capacitors aging.
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post #12 of 30
idk who told you you needed a 1000w psu for sli 560s, but they were wrong. a quality 600w unit could do it.

and according to this review, that PSU isnt that great. it will run your rig, but it may not be reliable down the line. it gets dangerously close to going out of spec and does in fact go out of spec at times when its fully loaded. it also has terrible efficiency which indicates the unit isnt well built, youre losing a lot of your power to heat which is worse for the longevity of your PSU.

like i said, that unit will run it, but if you start getting weird restarts or your GPU is downclocking or you have other issues, your PSU might be crying for help. then at that point you can come and ask us to recommend a QUALITY power supply for your rig. (an antec neo eco 620w would do very well and its about $80. there are other units around 650-700w, but those will be a bit more expensive)
Edited by IntelConvert - 2/10/11 at 10:10pm
    
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post #13 of 30
Very interesting! I might have to try and do dual 560's on my corsair 650tx, once I get the a new motherboard and save up enough money that is!
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post #14 of 30
you need atleast 1000w for a 580 because fermi uses a lot of power
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post #15 of 30
Quote:
Originally Posted by Johnny Guitar View Post
you need atleast 1000w for a 580 because fermi uses a lot of power
Not. It is possible to do 580 dual sli on a quality 750w.
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post #16 of 30
Quote:
Originally Posted by Behemoth777 View Post
Not. It is possible to do 580 dual sli on a quality 750w.
Do we really still need a /s tag? I mean come on...
     
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post #17 of 30
False

Quote:
Originally Posted by johnny guitar View Post
you need atleast 1000w for a 580 because fermi uses a lot of power
    
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post #18 of 30
doesnt it also depend of the rails on the PSU?
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post #19 of 30
Thread Starter 
.
Edited by Stefy - 11/12/11 at 10:54am
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post #20 of 30
Quote:
Originally Posted by Johnny Guitar View Post
you need atleast 1000w for a 580 because fermi uses a lot of power
definately not for one 580. and the GTX5xx cards are actually very efficient compared to the GTX4xx cards.

i, personally, wouldnt do 580SLI on a 750w unit... the only thing capable of that is possibly the AX750 or seasonic x-750, maybe one or two others. i would be ok with running them on a nice 850w unit. right now the XFX 850w black edition PSU is like $129 and its a great PSU and thats about the best price youre going to find for something that strong. (i got lucky and got my seasonic M12D 850w for half its retail price, paid $128 for it, yayz)

Quote:
doesnt it also depend of the rails on the PSU?
no. quality PSU manufacturers set their rail systems up to deal with loads on different rails. multi rail vs single rail is a thing of the past.



PSUs depend on the quality of their components and their ability to supply reliable amperage. the wattage rating is only where someone should start to look for PSUs. quality power output is much more important than big wattage numbers

Quote:
That link does not represent what I've read in 4 other reviews, so I'm not going to take it serious. 1 against 4. I ran SLI 470's on this PSU for over 8 months, no problems. Got tired of the heat from them so got the 560's. Whatever you say, it's a good PSU and only sold in a few countries.
well i guess ill choose to not take you seriously because i want links to these 4 other sites. silent PC review is a well known, reputable site. 8 months on SLI 470s is worse than the 560s. the 560s are much more efficient.

good luck ignorant sir.
Edited by IntelConvert - 2/10/11 at 10:20pm
    
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