2 x 5770 and only 1 monitor

Discussion in 'Mac Pro' started by BryanBensing, Nov 3, 2010.

  1. BryanBensing macrumors member

    Joined:
    Mar 23, 2009
    #1
    Hello gurus

    I've been looking around and couldn't find an answer to my question.

    (this question applies only for Windows on Boot Camp)

    What's the benefit of having 2 x 5770 ATI cards in CorssFire and using only 1 monitor? Will I see faster speeds in Boot Camp games? or is it 2 x 5770 only when connecting 2+ monitors?

    Please help me I'm confused here... :confused:


    Thank you
     
  2. crazzyeddie macrumors 68030

    crazzyeddie

    Joined:
    Dec 7, 2002
    Location:
    Florida, USA
    #2
    This will only benefit you if you're using multiple monitors where each monitor requires a large amount of VRAM.

    You might be able to use the cards in Crossfire in Windows, but not in OS X.
     
  3. bpd115 macrumors 6502a

    bpd115

    Joined:
    Feb 4, 2003
    Location:
    Pennsylvania
    #3
    as you are only referring to Bootcamp, yes Crossfire (or Nvidia SLI) will speed up game performance.
     
  4. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #4
    Not much, in theory and some times in real tests, 2 Crossfired 5770 yield the performance of a slight underclocked HD5870 or a stock clocked HD5850. So it practicality, you'd be better off scoring an HD5870.
     
  5. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #5
    See some benchmarks here! A quick look shows me that CF provides 50-100% performance increase depending on the game
     
  6. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #6
    What he said. Be sure to compare against the 5870 since you can't get a 5850 with Apple. Unless you do ROM magic.
     

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