Is 650W PSU enough to run two 6870 in CF???

GTO656 · 17 Oct 2011 at 13:17

How much power is need to run 6870s in CF mode??

thx

GTO656 · 17 Oct 2011 at 13:40

help plzzz?

dansew123 · 17 Oct 2011 at 13:43

Should be fine. What PSU is it. Have you got enough 6 pin connectors?

http://www.anandtech.com/bench/Product/301

Adam_101 · 17 Oct 2011 at 13:44

650 should be fine, 750 if you plan to OC.

barneystuta · 17 Oct 2011 at 13:49

Use this calculator, should tell you all you need.

http://extreme.outervision.com/psucalculatorlite.jsp

What CPU do yo use? For a Crossfire, unclocked, a 650 should be OK. As Adam_101 says, a 750 if you are overclocking.

GTO656 · 17 Oct 2011 at 13:56

Thx guys, i used the site above and I got about 667 watts recommended so Im better off with a 750w? I plan to o/c CPU aswell.

barneystuta · 17 Oct 2011 at 14:02

That site is fairly accurate at telling you what you need, and it also factors in capacitor ageing (basically wear and tear over the years basically).

If you plan to keep your PSU for more than a year (as most do), then a 750w would be better, meaning it will last a little longer.

GTO656 · 17 Oct 2011 at 14:13

barneystuta said:
That site is fairly accurate at telling you what you need, and it also factors in capacitor ageing (basically wear and tear over the years basically).

If you plan to keep your PSU for more than a year (as most do), then a 750w would be better, meaning it will last a little longer.

That is fantastic, I'll go with a 750w. thx for the help