5870 and a 5770 Xfire?

ok so i have an ultra 750watt psu and a official ati 5870 and a sapphire 5770. so i want to put them in cross fire...will this work i only have 2 6-pins but i saw a molex to 6-pin at me local computer store. im just wondering if this can be done. thanks and any answer is appreciated.

Cheers.
11 answers Last reply
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  1. HD5870 can not Crossfire with an HD5770.

    Hd5K follows the HD4K pattern I believe.
  2. ^+1
    You can't CF HD5870 with HD5770. :)
  3. Uh, why did you buy a 5770 and a 5870 in the first place?
  4. Maybe he upgraded.
  5. Oh, Well he should ahve bought another 5770, wold be faster/as fast for 150$, instead fo 400$.
  6. builderbobftw said:
    Oh, Well he should ahve bought another 5770, wold be faster/as fast for 150$, instead fo 400$.


    I got my 5870 for free from a friend at a testing place or something. So its official ati 5870 goodness.
  7. builderbobftw said:
    Oh, Well he should ahve bought another 5770, wold be faster/as fast for 150$, instead fo 400$.


    Two 5770s in CF performs pretty much the same as a 5850. The 5870 is a good bit faster.
  8. Errr, you sure about that..
  9. edeawillrule said:
    Two 5770s in CF performs pretty much the same as a 5850. The 5870 is a good bit faster.


    Very,Very,very wrong.

    the 5870 and 5770 CFX either tie, or come within 1fps of each other.

    http://www.guru3d.com/article/radeon-hd-5770-review-test/14
  10. builderbobftw said:
    Very,Very,very wrong.


    That's what I've heard anyway :P
  11. Hey! I was close!
    The 5770s in CF perform identically to a single 5870 in some cases and perform better or worse in others. It's 50/50.

    http://www.guru3d.com/article/radeon-hd-5770-review-test/
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