Psu requirment for msi r6870 twin frozor II

[marcd455]

I just purchased a msi r6870 twin frozr II and plan to get another for crossfire, i need to know what psu will work for my single card and be strong enough to power 2 in the near future

 

[EzioAs]

650W should be enough for 2 and will give you a bit of headroom. Just make sure to buy from either Corsair, Seaonic or Antec for psu

 

[marcd455]

Can some one explain this to me, how can i determine the proper psu for this situation? Only thing i can find is this card is recommended to use a 500watt psu...i will be runnin 2 of these in crossfire so how can i determine the amount of watts needed????

 

[maxinexus]

AMD recommends 600W power supply for CF

http://www.amd.com/us/products/desktop/graphics/amd-radeon-hd-6000/hd-6870/Pages/amd-radeon-hd-6870-overview.aspx#3

However you don't want to overwork your PSU. I rather have 750 working at 60% than 650 working at 80%

 

[marcd455]

Best answer selected by marcd455.

 

[maxinexus]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371051
$75 after rebate and 15% off

 

[Mousemonkey]

This topic has been closed by Mousemonkey