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16x/4x Crossfire that bad?

post #1 of 18
Thread Starter 
This is for my sig rig. When I first built CF wasnt important, but now I've been looking into it. I realized my mobo has a 16x/4x CF setup.

I have read that you lose performance and that it is somewhat crippling. But I could grab another 4890 for around 100 bucks or less now and a usual 4890 CF is pretty powerful vs 200 bucks for a superior new card.

So would this setup be so bad that it isn't even worth $75-100? Is it really that bad?
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post #2 of 18

Good video for you to watch.

post #3 of 18
16x/4x isn't going to be noticable. No worries.
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post #4 of 18
Interested in the answer too.

I know 16x/8x is only a few % you lose but not sure about 4x.
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post #5 of 18
Not bad at all, I read 16x/4x is just like 8x/8x and that if you aren't benching, the performance loss is negligible.
post #6 of 18
You would see a decrease of 3-4fps in worst case scenario, which is unlikely to happen.
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post #7 of 18
I wanted to go 6950 xfire on my 16/4 board , i read countless posts and cant get a solid answer ..

best thing to do is buy the card , if it doesnt work out .. sell it .

With 2 x 4890's it should be fine though ..

But iv heard heaps of people complaining they lose fps rather than gain when going xfire on 16/4 .
    
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post #8 of 18
Thread Starter 
Wow so it's really not too bad at all. Like Xristo said I had heard so many stories of it being so bad people lost performance, and thats what I was afraid of.

Thanks all!
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post #9 of 18
Your Welcome.
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post #10 of 18
if you have to, you can do it but it was noticable for me with my 5870 specially in games that require high frame rates like bc2.
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