R9 270 Crossfire

[rakinb]

I'm interested in adding another R9 270 for crossfire but I'm unusre if I should buy a new PSU. I have a ultra LSP 550 watt right now and it has 41 amps on the 12v rail.

 

[iam2thecrowe]

Ultra make ultra rubbish psu's in general. And even a good quality 550w unit would be pushing it with 2 270's. Id go for a 600w+ quality brand psu.

 

[unknownofprob]

Antec/XFX/Seasonic/Corsair with at least 80+ BRONZE certification and a minimum of 5 years warranty. Get a PSU that fits into all those three categories and you have a quality unit (600/+ w).

Superflower and OCZ are also others to consider, they are quite reputable in the power supply market.

EVGA 600B is a solid choice of power supply for the price, for a given choice.