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6850 Crossfire @ 8x, is it alright?

post #1 of 7
Thread Starter 
Hey guys ,

Never been a AMD user here but as the title says. I was sticking with the 560Ti but I find it easier to afford a 6850 in Crossfire than a 560Ti in SLI. What tempts me the most is that the 6850's use only one 6-pin and has great power consumption but will it run alright @ 8x?

I'll be getting one video card at the end of the month then another one next month so I might change my mind to a 6870 but not sure since the 6850 is very affordable and the power consumption is better. Just a thought.

Thank you.

Edit

Disregard my sig. I have a P45 board that supports Crossfire @ 8x and one card @ 16x. I'll be getting a Q9550 for free from my girls PC and overclock it to 4Ghz.

Edited by armen16 - 3/17/11 at 8:17am
post #2 of 7
Hello there.

I see your rig still use P35 board which is mean the PCIe socket is still 1.1.
PCIe 1.1 x8 bandwidth should be similar to PCIe 2.0 x4.
So I think it's not okay.
However, if you are talking about PCIe 2.0 x8, it should be fine.
    
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by Bima Sylirian View Post
Hello there.

I see your rig still use P35 board which is mean the PCIe socket is still 1.1.
PCIe 1.1 x8 bandwidth should be similar to PCIe 2.0 x4.
So I think it's not okay.
However, if you are talking about PCIe 2.0 x8, it should be fine.
Edited. My fault.
post #4 of 7
Should work just dandy
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post #5 of 7
Difference between 16X & 8X is next to nothing maybe a couple of FPS
post #6 of 7
Quote:
Originally Posted by armen16 View Post
Edited. My fault.
Like what I said in my previous post, PCIe 2.0 x8 should be fine with HD 6850 or HD 6870. Even HD 5870 only suffer 0-2% performance loss.
but it might be a different story with a powerful card like GTX 480 and anything faster than that.
    
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post #7 of 7
With a Radeon HD 6850, expect a 1% drop in performance. You'll get 0.5 lower FPS in your games!!!
    
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