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Sli gtx 570 psu?

post #1 of 7
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I'm about to build a new rig:

i5 2500k
Xigmatek DK (recycled)
8GB RAM
Biostar TP67XE
EVGA GTX 570 SC
Spinpoint F3 (1TB)
DVD Burner (may swap for BR drive later)
PCP&C Silencer 750 Watt

It's all going in a CM 690 with 3-4 case fans, and a Lamptron FC4 controller.

In another year or so, I may add a second GTX 570 if there's any point. I'm wanting to make sure I get a big enough PSU now so that I don't have to replace it when/if I do go SLI. So in short...is the Silencer 750 big enough to power this rig with SLI GTX 570's?
 
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post #2 of 7
I think some people may recommend a 850W but I think thats overkill.

The GTX 570s should draw a max of about 36 amps.. the cpu is far less than that and the unit can do 60amps on the 12v rail.

750W is enough.

Should be fine. In my opinion their are better PSUs out there for the money, but it should work for you.
Edited by rmp459 - 1/30/11 at 1:56pm
    
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post #3 of 7
I would get a 1000watt psu. They are not that much more money and definitely higher quality in general. It will never hit peak of 1100 watts (which is great) and you will have plenty of overclocking headroom for your cpu and gpus as well as expansion ability later. I made the mistake of getting a 1200 watt to run tri sli. I then had to step it up to a 1500 watt due to the degradation of the psu over time. It's always better to have more than you need and 1000 watts will only be around 150-200 watts more than you need right from the get go, BUT as the psu degrades over time then it will eventually hit around 900 watts which is still safe for that setup
 
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post #4 of 7
That board will run SLI in 8x/8x. Wont there be any microstutter issues ?

Personally, I would go for a 850W just to leave some headroom for overclocking
Edited by StashHouse - 1/30/11 at 1:59pm
post #5 of 7
a silencer 750 would be fine
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post #6 of 7
ran 2x480s off a 750w.... you will b fine... don't listen to anyone who tells you otherwise....

and both my 480s run a 8x... with no issues
post #7 of 7
Seasonic X750 will do you just fine.
 
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