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Will x4 crossfire make a big difference?

post #1 of 16
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Im thinking about going xfired 6850s cause I have good things about it, however will my board being restricted to x4 crossfire hurt my performance?
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post #2 of 16
yeah, its just not enough, x8 means your lose a bit of performance, but not too much, i don't see anyone use x4.
    
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post #3 of 16
Same advice as this ^.

I've read numerous articles (too lazy to post em lol) about how x4 in crossfire is just not a good idea. x8 is ok but people of course love x16/x16

x8/x8 is not too bad. IIRC, the performance loss is anywhere from 5% to 20% compared to dual x16. But the loss of going one at x4 is 50% or more apparently. The bandwidth just isn't there. I have the same problem with my board. Apparently it CAN crossfire but only at x4 which doesn't even make it worth it. Anybody know where I can find a biostar ta890fxe or asrock deluxe4?
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post #4 of 16
Not much difference between full lanes. About 1-5 fps difference using 4x on your mobo with xfire vs the deluxe version of your mobo with full lanes:

http://www.legitreviews.com/article/1500/9/
    
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post #5 of 16
Quote:
Originally Posted by Steven-1979 View Post
Not much difference between full lanes. About 1-5 fps difference using 4x on your mobo with xfire vs the deluxe version of your mobo with full lanes:

http://www.legitreviews.com/article/1500/9/
QFT

You sir, are the voice of reason.
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post #6 of 16
yeah 4x isn't as big a deal as alot of people make it out to be. I used Xfire on my p8p67 and it still performed great.
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post #7 of 16
I don't think its going to work that well.... :/
    
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post #8 of 16
Quote:
Originally Posted by iCrap View Post
I don't think its going to work that well.... :/
look at the reivew steven-1979 posted... its withing 5 fps on pretty much everything. yes its not as good as 8x8 or 16x16 but its about 95% and will still work fine.
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post #9 of 16
I used 16x/4x with an old board, my performance actually took a hit in many games and I had to turn crossfire off.

Worked fine on x8/x8 and x16/x16 boards. I don't thinks its worth it if its going to be x16/x4, but that's just me, it could have also been the fact that I was using a P55 board as well. Based on that review posted above, looks like you may be ok.
Edited by Sir Beregond - 7/25/11 at 10:16am
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post #10 of 16
http://www.overclock.net/graphics-ca...sfire-bad.html

im running 4980's in a 16x/4x configuration and it works great for me.
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