2 HD3870's with Dual Monitors BootCamp

Discussion in 'Mac Pro' started by BenDew, Aug 5, 2008.

  1. BenDew macrumors newbie

    Aug 5, 2008
    Hey Guys, I am looking to get a Mac Pro, and have 1 or 2 questions about graphics cards and dual monitors. I plan to use Bootcamp ( I play games in Windows) , and need something more powerful than a 8800GT. I am looking to get 2 3870's and run them in crossfire when I am in vista. My question is, Can I run these two cards solo in Leopard and crossfire for vista with dual monitors operating in both OS's without having to unplug or change any cabling between booting Leopard and vista. I also have a 8800 GTX I could run in windows, but I don't want to reach around and change monitor cables every time.

    Also, would a 3870X2 run in Leopard? because then I could just have one card, 2 DVI ports, problem solved.

    Thanks :)
  2. kahine macrumors regular

    Jul 10, 2008
    The two mac 3870's work perfect for both - no unhooking necessary - I have three hooked up and Crossfire works fine in Vista64

    Cant speak to the 3870x2 though I dont think anyone has one working atm in OS X I am fairly sure

    Also I got a nice fps boost going from single 8800 to 3870 crossfire in windows gaming just fyi
  3. tobyg macrumors 6502a

    Aug 31, 2004
    So you have 3 3870's working in Crossfire in a Mac Pro? Is yours the Early 2008 or the older dual-dual core? I have an older generation and am thinking about 3 3870's if it will work.

    And are all 3 of yours the Mac version?

  4. kahine macrumors regular

    Jul 10, 2008
    Just two and its early 08 Mac Pro - not sure would be worth it to try 3 as then you're running into diminishing returns plus there's not enough x16 slots for that
  5. tobyg macrumors 6502a

    Aug 31, 2004
    Oh so you meant you have 3 monitors hooked up?
  6. kahine macrumors regular

    Jul 10, 2008

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