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SB CFX 8x/8x vs 16x/4x results

post #1 of 6
Thread Starter 
The orb has the stupids atm, I'll get the compare links up later.


Vantage

You can see by the Vantage score that CFX5870 is giving CFX5850 performance at 16x/4x.

[attach]191691[/attach]

[attach]191692[/attach]

[attach]191693[/attach]

[attach]191694[/attach]

[attach]191695[/attach]



I've only played one game long enough to form an opinion, BC2 and it runs much smoother at 8x/8x, 16x/4x had noticeable slowdowns during heavy action.
Just watching the fraps meter I see a 20+ fps increase in BC2 Vietnam.
Edited by grunion - 3/5/11 at 7:50am
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post #2 of 6
Hmm interesting results. Would you expect to see the same behavior with 16x/16x vs. 16x/8x since it's a higher bandwidth?

Do other games perform smoother at 8x/8x compared to 16x/4x? Or is it just with BC2? I'm asking cause I'm gonna be getting a 5870 soon and I wonder if the same behavior will be noticeable in a Trifire setup at 16x/16x or 16x/8x (the modes my MB supports).

I'm totally gonna test those modes out when I get my 5870.
Edited by infomancer - 1/23/11 at 12:06am
    
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by infomancer;12107783 
Hmm interesting results. Would you expect to see the same behavior with 16x/16x vs. 16x/8x since it's a higher bandwidth?

Do other games perform smoother at 8x/8x compared to 16x/4x? Or is it just with BC2? I'm asking cause I'm gonna be getting a 5870 soon and I wonder if the same behavior will be noticeable in a Trifire setup at 16x/16x or 16x/8x (the modes my MB supports).

I'm totally gonna test those modes out when I get my 5870.

Only BC2 regularly with both setups.

But I'm gonna say some games will have points that they would bog down the 16x/4x.
Just going by gpu usage alone, the 4x card was always running 10-20% less than the 16x card.
Now at 8x/8x both cards are pegged at 99%.

I'll eventually get around to trying some different games.

As for tri fire 16x/8x, outside of synthetics I don't think you'll see a hit.
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post #4 of 6
Awesome thanks for the reply. I wonder how my 5970 will perform on 16x vs 8x crossfired with a 5870 on 16x vs 8x. Oooo I'm excited to test this out wheee.gif
    
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post #5 of 6
Thanks for this.
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post #6 of 6
AWESOME, always wanted to see a benchmark of 8x8 vs 16x4, about 10 frames less when using 16x4, it s not that big. THx for this!
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