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Discussion Starter · #1 ·
I currently have a XFX 7870 core edition, and I want to buy a 7850 from the market place to crossfire it.

What kind of clocks do I have to run on the 7850 to match a 1.1Ghz 7870?

Thanks in advance.

Edit: Also, what happens if one of my card is slower than the other in CF? Will it cause studder? Will the faster card have lower usage?
 

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This is a really bad idea. I know because I did it. When you have two GPUs in crossfire that are not identical, you get something called "runt" frames which create a ton of microstutter which you will see and which will ruin your gaming experience. I found that the single 7870 looked smoother than the "frankenfire" setup.

The new 13.8 beta driver will definitely help, but my advice FWIW is to buy a 7950 or a 7970 and sell your current card. You won't regret it.
 
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