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ea500 crossfire?

post #1 of 10
Thread Starter 
I'm grabbing 2 5770's in the next couples of weeks. Will I have to upgrade the antec ea500 before I do so?--> If yes, which psu to get, please don't recommend "coolmax" or "coolermaster". I just don't agree with their quality. I prefer antecs, corsairs, seasonics, and enermaxes. Thanks.
    
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post #2 of 10
At least 750w for xfire. I would go 850 to be safe. Corsair for sure, followed by Seasonic. I choose Cougar to be different and I love this PSU. Plus it got great reviews. But never a bad choice with Corsair
post #3 of 10
Your going to need at least a 750.
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Gene-Z Dedi
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post #4 of 10
750W is ridiculous for two 5770s. That would be for like SLI GTX580s with a highly overclocked quad core.


A pair of 5770s can run fine on a quality 550W. Your EA500 would *probably* be fine, but I haven't tried it so I'm not 100% positive. The EA500 is a quality PSU regardless, so if it gets overloaded it should shut down gracefully, and you'll know then if you need a better PSU.
post #5 of 10
Thread Starter 
Quote:
Originally Posted by JedixJarf View Post
Your going to need at least a 750.
Hmm.. will this psu work for 2 5750's?
    
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post #6 of 10
Quote:
Originally Posted by daydream99 View Post
Hmm.. will this psu work for 2 5750's?
Definitely, and probably for two 5770s.
post #7 of 10
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
Definitely, and probably for two 5770s.
Glad to see Phaedrus jumping in this thread! Also my ea500 is a seasonic, not the delta ones. Does that make a difference?
    
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post #8 of 10
Not really, they're both quality units. The EA500 performs a little better, the EA500D is built a little better. They both should be sufficient.



Again, 750W is way overkill for what you're talking about.
post #9 of 10
Thread Starter 
ikr... I'll just take the luck of the draw. If the antec blows up.. i'll know its that time again, lol. I've have this psu for 3 years.
    
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post #10 of 10
750 watts? Uh what? Definitely ignore those posts.

Anyway, the 5770 is one of the highest performing low power cards around, guru3d measured 5770 xfire system as drawing 423 Watts from the wall under full stress PEAK. The problem with the Seasonic EA500 is that it is rated for 408W on the 12V (off the top of my head, I'll look at the label later if you want the exact number), however accounting for AC/DC efficiency the 5770s are well below what the EA500 can produce, even peak powerwise.

Just don't go crazy overclocking.
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