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Will Newer ATI GPU's Run Crossfire On My 775 Motherboard?

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December 28, 2011 6:07:56 PM

Hi all

I have an Asus P5Q Pro Turbo and am thinking of getting 2 x 6950's but i'm not sure if this setup will work as my mobo is pretty old now. I'm not even sure if newer GPU's in crossfire will work on this. Would i need to upgrade my mobo?

Any info would be great
Thanks
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 8:46:07 PM

I'm no mobo expert but i can't find anything why you couldn't. Great mobo as far as i can see. It's really designed for crossfire, even with a lot of space between the two pci-e slots, so even cooling won't be a problem.

Could be wrong though.
December 28, 2011 9:01:41 PM

Ok thanks. :)  I'm thinking of getting them sometime in the new year. If they don't work then all i can do is return them.

No harm in trying i guess.
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a c 104 U Graphics card
a b V Motherboard
December 28, 2011 9:04:45 PM

What processor and psu are you using btw ?
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 9:07:18 PM

you might run into bottlenecking on a 775 cpu with 6950 xfire
December 28, 2011 9:10:33 PM

CPU: QX9650
PSU: Corsair CMPSU-850HX Professional Series 850W
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 9:19:45 PM

I think 2 6950 might be a bit much for that cpu. it would have its work cut out for it with 1 6950.
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 9:24:32 PM

Could be, don't know enough from crossfire to say you're wrong, so i say you're right. :D 
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 9:26:06 PM

Can't he oc the cpu ?
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 9:30:25 PM

yes he can definitely OC that CPU on that board, which would be needed for the 2x 6950. should aim for at least a 3.8 ghz on that.

It shouldn't be too big a deal but its still something to keep in mind.
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 9:32:03 PM

If i could afford 2 6950's i would certainly try that than :D 
December 28, 2011 9:54:40 PM

Wow...so i would need to oc the cpu to run those cards. At the moment i'm currently running a GTX295.
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 10:02:50 PM

you don't need to OC to run the cards but it would bring your performance up considering you will probably run into a bottleneck. 2 6950 is a lot more powerful that the gtx295.

I would consider not doing crossfire and get 1 6950(or a 6970) and see how it goes, if you play at 1080p it should be good enough.
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 10:07:23 PM

It's never enough !!! :lol:  No, you're right, see what one does, you can always buy another one later.
December 28, 2011 10:14:31 PM

Yeh after reading all your comments, you guys make sense. Think i'll save the money and stick to one GPU and see how that goes for now. I can always upgrade later. Had no idea but that 6950 is pretty powerfull when combined with another card.
a c 104 U Graphics card
a b V Motherboard
December 28, 2011 10:19:33 PM

And as stand alone. I would go for a 2G version btw.
December 28, 2011 10:25:43 PM

Yeh, i will go for the 2GB version.

Thanks :) 
a c 105 U Graphics card
a b V Motherboard
December 28, 2011 10:30:18 PM

I run 1 2gig 6950 on a quad 775. One is all you need. 2 would be a waste of money ........... unless you see a major over haul in the near future.
December 28, 2011 10:38:32 PM

Yeh, i'll stick to one for now. I'm hoping when i get it, that it will run BF3 better than my GTX295.
December 28, 2011 10:41:38 PM

Why not wait for the new 79XX to show up and you can look at the benchmark then and decide if you want to go with the new 79XX, they're around the corner.

On Tom's preview, http://www.tomshardware.com/reviews/radeon-hd-7970-benc..., they show they 7970 not far behind the GTX 590.
For a single gpu card, it'll be the best.
a b U Graphics card
a b V Motherboard
December 28, 2011 10:51:40 PM

The only thing that I would be worried about is the PSU.
But it seems like you got enough power to handle it.
As nocteratus said, I would wait for HD 7k series to come out. The price on the vid cards u are looking at will drop like a rock, or you could get a 7k too =D
a b U Graphics card
a b V Motherboard
December 28, 2011 10:52:15 PM

OC the CPU and enjoy
December 28, 2011 10:58:39 PM

I guess i'm spoilt for choice but to be honest i just want something that will max out BF3 with no problems. Anything better than my GTX295 will do. I'm sure the 6950 will be ok for me for now.
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 11:01:23 PM

you won't max out bf3 but the 6950 will give very good performance.
December 28, 2011 11:03:12 PM

2 x 6950 will i'm sure?
a c 92 U Graphics card
a b V Motherboard
December 28, 2011 11:09:41 PM

yes, if playing bf3 on max is all you want then 2x 6950 would be what you want.

but basically all other games would have no effect on having 2 of them with your cpu at stock.
December 28, 2011 11:17:33 PM

Wow....sounds like i got my work cut out. Seems like i would have to oc the cpu from time to time.
!