bliu88

Hey guys im throwing a system together 2 4870x2s (just for fun). QX6850, 8gb ram 1 hard drive water cooling....

How much power will I need. I have a 950 watt psu is that to low????

3XPeriment

Depends on the brand, rail # and Amperage, etc. Corsair, Tagan, PC&P, OCZ, Antec, etc should be ok. Make sure your rails got plenty of juice. Probably around ~1000W would be a safe overhead. You probably could do it with 800-900W though.

EDIT: BTW, you're building a system with 2 4870X2 and a Q~~~ Extreme FOR FUN?

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bliu88

im bought a coolmax just because it was cheap.
http://www.newegg.com/Product/Produc...82E16817159072


ill kick myself if i have to buy another psu

procpuarie

buy a pc power 750 quad. is certified to run 4870x2 quad fire

SOURCE: find it on the crossfire site

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3XPeriment

Should be plenty. It's got 4 12V rails, with 20A on 2 and 25A on the others. You should be all set.

EDIT: That's a pretty good deal BTW.

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procpuarie

well more rails the worse.

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low strife

I would NEVER NEVER NEVER NEVER trust over $2000 worth of PC parts to a $120 power supply made by a no-name company (and it's modular!).

The thing is, sure they can make them for that cheap, but imagine what kind of corners on build quality they have to cut in order to deliver the product that cheap while still cutting a profit.

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procpuarie

yeah i know, eh? ONLY pc power would get my trust in that.

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3XPeriment

Coolmax isn't exactly no-name. I've seen a few people already who use them and they seem relatively reliable.

Yes, PC&P is probably my go-to brand for reliable power supplies. But in this case, I think that the Coolmax should work.

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bliu88

i know a guy who said it was pretty goo so thats why i picked it up, any other recomendations as far as a psu with enough juice? I really dont want to spend over 150 maybe 200 max if its really nice. lol