650 Ti BOOST on 400W PSU

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bandidaz

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Sep 8, 2013
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I'm building a new rig and i just bought a cougar case (Volant 67M5) that comes with 400w psu
PSU: RS Series RSB400 400W PSU

and i'm goin to buy an EVGA GTX 650TI BOOST SUPERCLOCKED 1GB as soon as possible..

The question is:
Do i have to replace the new PSU that comes with the case with another better one ? or this PSU shall work fine ?!

Please help

Thanks :)
 
Solution
iblowuup
Personally I would not risk it and I would get at least a 500 watt PSU. However I think you could probably run it with 400 watts as long as nothing else in your system is a power hog. (8 core overclocked CPU, multiple case fans)
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iblowuup

iblowuup

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Jul 14, 2013
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Personally I would not risk it and I would get at least a 500 watt PSU. However I think you could probably run it with 400 watts as long as nothing else in your system is a power hog. (8 core overclocked CPU, multiple case fans)
 
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Goodeggray

Distinguished
Sep 10, 2011
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19,660
In a 2 rail 12v psus one rail will supply the mobo power and the other rail will supply the pci-e and molex. A gpu can draw 75w from the pci-e slot on the mobo and 75w from each 6 pin pci-e connector and 150w from each 8 pin pci-e connector. So a gpu with one pci-e plug can draw 75w from the connectoe and 75w from the mobo slot for a total of 150w.
 
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