CFing a 7850 with a 1.1Ghz 7870?

295 Views 4 Replies 4 Participants Last post by TheLAWNOOB, Aug 10, 2013

TheLAWNOOB

Discussion Starter · Aug 9, 2013

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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SickBeast

· #2 · Aug 9, 2013

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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TheOCNoob

· #3 · Aug 9, 2013

Wait and buy another 7870. Will be the best investment especially since crossfire can be considered a good investment since the release of 13.8

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raghu78

· #4 · Aug 9, 2013

buy another HD 7870. you don't want to add to the existing problems of multi-GPU with different cards. synchronization and latency issues will worsen with different cards. not a good idea.

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TheLAWNOOB

Discussion Starter · #5 · Aug 10, 2013

Thanks a lot guys. Reped

I'll probably just buy the card anyways ('cause its so cheap) and give it to a friend. He is still using a GT430 lol.

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