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Crossfire with x16 and x4 pci-e slots?

Last response: in Graphics & Displays
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June 3, 2010 11:43:36 PM

Im sorry, I posted this once before and I didnt realize that my MOBO has an x4 not an x8
pci-e slot.

So Im guessing that its possible but I'm going to take a huge performance hit.

What do you guys think?
June 3, 2010 11:49:32 PM

So if I drop another 170 later down the road (A couple Years) or whatever it would cost then would it be a waste?

Would I be better off buying a completely new video card (Maybe moving the 5770 down to the x4 slot) in the future and crossfiring with that?
June 3, 2010 11:50:28 PM

Well, screw that if its going to bring the 16x slotted card down with it.
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June 3, 2010 11:50:39 PM

Best answer selected by Ninelivesproductions.

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June 3, 2010 11:51:10 PM
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The performance hit is much larger than 5-10% from what I've read. Basically from the numbers I've seen you should forget about crossfire with a second slot at x4.
June 4, 2010 12:06:28 AM

Quote:
The 480 is ~10% worse on X4 than X16, so Id suppose that crossfire with 2 lower powered cards wont be much different.

Where did you actually see those numbers? I thought for a board to even be licensed as SLI it needed to be at least x8/x8
October 25, 2013 6:25:28 PM

jyjjy said:
The performance hit is much larger than 5-10% from what I've read. Basically from the numbers I've seen you should forget about crossfire with a second slot at x4.


Sad but true!

I learned this the hard way, bought a 970 mobo for my 8350.(always take the time to do your homework, there is no rush!)

Single gpu will do better on 970 board vs CF
I had to take out my second gpu 7950 to be able to use the first one to its 100% and with the CF it was all choppy. that was just false advertisement I say, it shouldn't say crossfire on the box even!
!