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HELP Crossfire 2 4890's

Last response: in Graphics & Displays
August 13, 2009 3:43:06 AM

I just got my 2nd 4890 and was all syked for awesome 60+ crysis fps, and now im about to throw my *** in a dumpster.. these cards work worse in crossfire than alone!! just sitting on the beach lookin at the horizon in crysis i get 90+fps with each card alone, but hook em up together and i get 70-73 WTF ive tried everything, switched and switch used one bridge and 2 bridges someone please help me!!!

More about : crossfire 4890

August 13, 2009 5:20:49 AM

If i run crysis, and watch the gpu activity, only one card is doing all the work, though it seems both cards are working, as they work alone.
August 13, 2009 5:55:31 AM

can we get more specs on your rig?
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a b U Graphics card
August 13, 2009 6:45:16 AM

Specs please. Especially PSU and mobo.

(I hope this case isn't like the one who tries to do crossfire in an asus sli deluxe mobo.)
August 13, 2009 6:51:30 AM

nope lol,
Phenom II 955
MSI 790fx-GD70
psu is a kingwin 750w modular
2 diamond xoc 4890's
150gb raptor
640gb WD
a b U Graphics card
August 13, 2009 6:55:34 AM

OMFG! Doing CF with that crappy PSU is a no-no. Get a better one like a 750tx.
August 13, 2009 6:56:41 AM

lol, wanna buy a nice modular PSU??
August 13, 2009 7:02:30 AM

yeah im lookin at it right now actually its in my cart rofl, you think that would cause bluescreens too?
August 13, 2009 7:18:44 AM

im pretty sure it would, cuz this didnt happen till i was using my 2nd 4890 and it only happens when they're being used and the PSU does get quite hot.

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a b U Graphics card
August 13, 2009 7:40:43 AM

BSOD happens because your crappy PSU can't handle the load of 2 4890s. Good for you that it didn't explode at all.
August 13, 2009 3:26:29 PM

lol, tyvm new one in the mail and this ones on ebay