nathris

4890s use around 200W under load at stock. Might be different in CF, but throw in an OC'd i7, and you're probably pulling over 900W on the +12V.

An HX1000 would probably be good enough, but if you really want to be safe get an Enermax Galaxy.

I'd suggest talking to G|F.E.A.D|Killa, since he's running 3 4890s on an HX1000.

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EnToxication

LOLLL + good find. Lol

Let's think here, I really do think it's better to stick with that psu and go 5870s or 5850s. I guess that a new PSU would be around 250< and 4890s are around 200 right? so that would be... 650? Plus monster load of wattage probably just for few extra fps. Seems like total waste of money right there.

Maddog7771

YOur going to need way more power. Those cards require a huge amount of amps. Why is it always talk about watts and not amps? And I did not know that you could SLI an ATI video card.

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HAF 932 Black OPS

Sig Rig3DMark06 Score 16183

MY F@H STATS

lockdownx1x

More like Less than 135W per card.
http://www.xbitlabs.com/articles/vid...0_6.html#sect0

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Riou

IIRC, the jump from tri-fire to quad-fire is very minimal. Like maybe 10% improvement at the cost of more watts.

Interpolation

Aha! You caught me typing faster than my actual thoughts. Bizarre I know.

So basically what your saying is 4890's are too pricey and too power hungry for 'few extra fps', and your solution for all this excess of price and power is to go with 5870's or 5850's instead (while keeping the same PSU). That is fascinating!

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el gappo

just keep that psu dedicated for your gpus's and get a hx450 for your system cheap solution

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G|F.E.A.D|Killa

that isnt as fun as 4 video cards

you could get by on a corsair 1000HX for your entire system and 4 4890s. but even then 3 4890s put my PSU under some stress and got it pretty warm, so expect some massive power draw from that badboy.

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I heard Ford is coming out with heated bumpers in 2010 so your hands don not get cold while pushing it.

kurosu

edit: I am dumb and I didn't read the title too well. I thought it said two 4890's. For four cards... probably not!... but you could always try it out and if it doesn't work then sell your psu and buy a more powerful one.

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jlchavis0844

I think that the dual PSU is the way to go. You can get a nice, low power PSU for $50 for the board and molex.