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Crossfire on ASRock 970 Extreme3

Alright, so I'm new to crossfire, always ran a single solid mid-range card.

Current setup:
CPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16819103727
MOBO: http://www.newegg.com/Product/Product.aspx?Item=N82E16813157280
GPU: http://www.newegg.com/Product/Product.aspx?Item=N82E16814131374
PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010

My friend has the same mobo and said it supported CrossFire on its own (without a bridge), and his rig just died so I came across this: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150618&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA for free

Now they're all plugged in and the monitor plugged into the xfx IS on and working but I can't enable crossfire.

From what I've read it'll only run x16/x4 on this setup, but thats better than no crossfire I guess?

I guess my questions are:
1) should i bother crossfiring these cards on this setup?
2) do i need to order a bridge?
3) if i cant crossfire at all, is the xfx better than the powercolor in any particular way?
5 answers Last reply Best Answer
More about crossfire asrock extreme3
  1. Best answer
    the 6850 requires a bridge. the only gpu that i can recall that does not require it is the 7750
  2. assuming this mobo only runs x16/x4, would you say its worth it?
  3. Crossfire is pretty lenient on performance loss from 8x to 4x. you will lose at most like maybe 4-6% compared to an 8x/8x doing the same.

    i will also note that you may experience microstuttering if your eyesight is very sharp on framerate reading.

    edit2: when i say 4-6%, thats the most loss upper limit. its probably going to be less, as early gpus dont saturate the slot as much as like extremely high end ones.
  4. Best answer selected by dansbarking.
  5. alright, thanks! i'll see if best buy has one tomorrow, all the ones im finding online seem a bit too short
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