I5 4590, Crossfire R9 280's on a 750w PSU?

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Finnick2000

Finnick2000

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Sep 10, 2014
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Hey all I currently have a single R9 280 and I was looking to buy a second to CF the only thing I am worried about is power usage. I have a EVGA 750w B2 80+ Bronze Modular PSU. Will this be enough to support both GPU's and my CPU?
 
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Woody1999
I wouldn't recommend it. The GTX 980 uses 35W less power than the R9 280 and when you SLI two of those, they recommend an 850W power supply. You'd be better off saving a bit more money and replacing it with a much more powerful card.

Woody
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Woody1999

Woody1999

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Jan 3, 2015
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I wouldn't recommend it. The GTX 980 uses 35W less power than the R9 280 and when you SLI two of those, they recommend an 850W power supply. You'd be better off saving a bit more money and replacing it with a much more powerful card.

Woody
 
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Dragos Manea

Dragos Manea

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Mar 30, 2015
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It is not important the wattage, you must check the 12v line to see the amps a 500w psu can have more amps on the 12v line then a 650w psu, a r9 280 needs aroudn 30 amps on the 12v line so 2x280 needs 60 amps at least, i might say u need a 75-80 amps on the12v line psu.
 
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