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How many watts needed? - Page 3

post #21 of 25
Thread Starter 
Yeah that Xigmateck 750w is perfect for what i need. I think it's worth the wait till they're back in stock. Unless i find a smoke'n deal on a good modular PSU i'm gonna wait. Thanks shinji2k and everyone else who's helped.
post #22 of 25
I have an Enermax pro82+ 625w PSU that has 2 6-pin and 2 6+2 video power connectors. Should this thing be sufficient for 2 4870s and my c2q? If I calculate out my setup with 3870s using the calculator at http://www.extreme.outervision.com/p...ulatorlite.jsp, it says 430w. If I add the xtra 45w per card on top of that, it comes to 520w, which is less than my PSU's 625W. I'm only curious because, in spite of the 600w recommended by ATI for CF, the only certified power supplies for CF 4870s are like 800w+.

--Matt
Edited by mkosem - 7/3/08 at 9:00pm
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post #23 of 25
Your 520W estimation seems about right to me. It has 50A (600W) on the 12V rail which meets my minimum recommendations for an OCed quad and 2 4870s. The new Enermaxes seem to be pretty good but overpriced (tested well, reliability has yet to be proven). Preferably, you should have ~60A on the 12V for that little extra room. But as you already have the PSU, I see no reason why it can't handle it.
Edited by shinji2k - 7/3/08 at 9:05pm
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post #24 of 25
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post #25 of 25
Quote:
Originally Posted by BLKKROW View Post
That thing is a joke. Newegg is pretty good most of the time, but I wouldn't trust any retailer to recommend what I need. They overestimate like crazy. At least the outervision calculator recommended constantly is at least somewhat correct.
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