Shackford Posted February 20, 2011 Posted February 20, 2011 I'm looking into upgrading my pc soon, probably with something like these specs: Phenom ii x2 555BE 4gb ddr3 1600mhz 2x 4870 512mb I was wondering how much power I would need for 2 4870s and if anyone could reccomend a psu for me? Share this post Link to post Share on other sites More sharing options...
Puck Posted February 20, 2011 Posted February 20, 2011 I'm looking into upgrading my pc soon, probably with something like these specs: Phenom ii x2 555BE 4gb ddr3 1600mhz 2x 4870 512mb I was wondering how much power I would need for 2 4870s and if anyone could reccomend a psu for me? I ran Quadfire 4870s with my OCZ Z850 without a single hiccup . I am partial to the single rail PCP&C/OCZ power supplies - they don't get much better. Less worry about balancing loads among multiple heavy load graphics cards. I also ran dual 4870s with a Corsair TX650 backup PSU I have and I am surprised at its quality for its price. It is also a single rail PSU, with 52A on the 12v. Amps on the 12v rail are a LOT more important then the advertised watts. Not only are the watts all rated at different temperatures and some PSUs are considerably lower wattage at operating temps, but a cheap "800w" PSU can be made of multiple weak rails that add up to 800w. Adding a power hungry graphics card on a weak rail that is shared by the motherboard can cause all sorts of instability issues even though your total wattage usage is a lot less then what the PSU was rated. Share this post Link to post Share on other sites More sharing options...
paulktreg Posted February 20, 2011 Posted February 20, 2011 How about one of these? Share this post Link to post Share on other sites More sharing options...
JuniorPC Posted February 22, 2011 Posted February 22, 2011 My power supply is a PC & C 750 Quad and ran 4870CF Share this post Link to post Share on other sites More sharing options...
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