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Windows 7: Confused with size of PSU for GTX 680 SLI

24 Feb 2013   #11
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by kbrady1979 View Post
Trust TwoCables on this issue. Your AX850 will run an OC'd CPU, dual 680's and all of your other components just fine. These new components are much more powerful than older components, but require quite a bit less power to run. If you want another 680, you might be in luck.......I have a feeling they will be dropping in price soon.
Just for fun, I looked up a review of the Asus card:

ASUS GeForce GTX 680 DirectCU II OC | silentpcreview.com

Looks like it doesn't use much more power than a reference GTX680 at maximum load. The 300W capacity of its PCI-E power connectors isn't needed. The two cards together would only use roughly half the capacity of your AX850.

Go for it.


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24 Feb 2013   #12
Vipermk2

Windows 10 Pro x64
 
 

Thank you all for adding your opinions and advice, looks like I'll be going for another card soon.
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24 Feb 2013   #13
TwoCables

 

Sweet! More GPU power!
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24 Feb 2013   #14
Wishmaster

Windows 7 Home Premium 64bit
 
 

The Ax series are basically a Seasonic X series PSU.
These are very good Power Supplies (Gold rated) and the advertised wattage on these units are typically its continuous output.

While not all PSUs may be able too, a AX750 or X750 should be able to run SLI 680s without much issue, although it may get tight if Overclocking them.
And have no issues with SLi 570/670s.
The 750 variant can peak around 1K output for a short time.

An AX850 will have additional Headroom and should run SLI 680s without any worries.

You'd be OK even at 750 if not OCing.
With a AX850, I wouldnt think twice about it. It'll be fine.
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 Confused with size of PSU for GTX 680 SLI




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