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Seasonic S12 550w be enough for 2x 5850's?

post #1 of 13
Thread Starter 
I found a Seasonic S12 550w for sale on craigslist... would it run two 5850's? Or at the very minimum, a 5850 and a 5770?
post #2 of 13
I won't make that risk If I were you... You can't be sure than the system won't crash under high load.
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post #3 of 13
It would be fine with a pair of 5850s. A 5850+5770 combo wouldn't do you any good since you can't crossfire those together.
Just a question though -- your sig indicates you already have a Corsair 650W, did that one die or would the SeaSonic S12 550W be for a different computer?
post #4 of 13
Yep, Seasonic are great PSU's and Tomshardware shows Crossfire 5850's using 469W of power. The Seasonic is 80+ power efficient, should be more than enough

Crossfire 5870's show 560W - that PSU should be able to do that even
Edited by appleg33k85 - 5/5/11 at 9:18am
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post #5 of 13
550W will be enough for two 5850's but one 5850 and a 5770 will be a little too much. SeaSonic are good units so you should be good!
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post #6 of 13
Thread Starter 
This would be for a different computer.

Also, I wouldn't be using the CPU at all. It's a folding/datamining/GPU crunching rig. So crossfire doesn't matter either...

Thanks for the opinions! I'll go for it and see what happens.
post #7 of 13
Thread Starter 
Quote:
Originally Posted by XanderDylan View Post
550W will be enough for two 5850's but one 5850 and a 5770 will be a little too much. SeaSonic are good units so you should be good!
Wait...

What?
post #8 of 13
Quote:
Originally Posted by SgtSpike View Post
Wait...

What?
I said that, too =p
post #9 of 13
Quote:
Originally Posted by Shub View Post
I said that, too =p
I was reading something else while I was writing it my bad! lol Those two can't be Xfired

Anyways, the two 5850's will run fine with that PSU.
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post #10 of 13
It'll be fine so long as you don't add the SMP client to it. Try running all 3 at once and you'll be pushing it a bit.
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