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  1. #1
    Mac Pro with 2 ati 5870

    Member Since
    Aug 15, 2010
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    2
    Mac Pro with 2 ati 5870 - HELP
    I'm looking to buy a new Mac Pro in the next couple of weeks. Specs are close to basic (3.2 nehalem, 6 gigs of ram and an ati 5870). Eventually I would like to upgrade it... meaning get a westmere 6 core (bye bye applecare), ssd and hopefully a second 5870. My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
    I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about. From the looks of it, I don't think it would be hard to install the PSU in the empty optics bay but would this kill my applecare thing and would the 2 cards work from a hardware/software point of view (in OSX and Win 7)?

    Thank you.

  2. #2
    Mac Pro with 2 ati 5870

    Member Since
    Aug 15, 2010
    Posts
    2
    anyone?

  3. #3
    Mac Pro with 2 ati 5870
    iggibar's Avatar
    Member Since
    Apr 20, 2009
    Location
    C-Town
    Posts
    4,071
    Specs:
    Mac Pro 4.1 15" MBP. 13" MBP. 17" PB. Power Mac G5. Galaxy Note 4 160gb*
    If any damages/problems are caused by you running something that is not intended to be run, you warranty/apple care will be void.
    “If you are distressed by anything external, the pain is not due to the thing itself but to your own estimate of it; and this you have the power to revoke at any moment.” Marcus Aurelius

  4. #4
    Mac Pro with 2 ati 5870
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    20,061
    Specs:
    iMac i5 2.7GHz, 16GB memory, OS 10.10.5
    You anticipate we will tell you how to turn your Mac Pro into a hackintosh?

  5. #5
    Mac Pro with 2 ati 5870

    Member Since
    Oct 05, 2009
    Posts
    236
    Specs:
    2011 13' Macbook Pro i5
    Quote Originally Posted by Semaka View Post
    I'm looking to buy a new Mac Pro in the next couple of weeks. Specs are close to basic (3.2 nehalem, 6 gigs of ram and an ati 5870). Eventually I would like to upgrade it... meaning get a westmere 6 core (bye bye applecare), ssd and hopefully a second 5870. My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
    I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about. From the looks of it, I don't think it would be hard to install the PSU in the empty optics bay but would this kill my applecare thing and would the 2 cards work from a hardware/software point of view (in OSX and Win 7)?

    Thank you.
    If you want that kind of power,skip the mac pro,get a Dell XPS 9100,I know dell was always more pricy,no more. For the base price of a mac pro,you can grab an i7 920,an ATi 5970 and 12GB of ram with dedicated sound and 1.5Tb drives.

  6. #6
    Mac Pro with 2 ati 5870
    CrimsonRequiem's Avatar
    Member Since
    Jul 24, 2008
    Posts
    6,004
    Specs:
    MBP 2.3 Ghz 4GB RAM 860 GB SSD, iMac 3.4 GHz Intel Core i7 32GB RAM, Fusion Drive 1TB
    Is it even possible to do a crossfire on a Mac? I know you can do an SLI config.

    Quote Originally Posted by harryb2448 View Post
    You anticipate we will tell you how to turn your Mac Pro into a hackintosh?
    More like a modded Mac Pro. I would say.
    死神はリンゴしか食べない。

  7. #7
    Mac Pro with 2 ati 5870
    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    31,499
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.7.5
    Quote Originally Posted by Semaka View Post
    My question to the more mac savy ppl is: would it be possible to install and operate an additional 5870 in crossfire?
    I've been reading some forums saying I have to install a PSU to run the second video card since the Mac Pro won't take more than 300 watts (for the PCI slots) and some wire mambojumbo that i have yet to get any specific info about.
    I'm not exactly sure what your goals are...but with most Mac Pro's, you can install 4 video cards. If each video card has 2 DVI ports...you can connect up to 8 monitors. Obviously if the video cards take up two PCIe slots...you won't be able to install 4 cards.

    So with this being said...if your main goal is to run a lot of monitors from this Mac Pro...just install more video cards. If you want to run two 5870's in Crossfire...not sure you can do it.

    - Nick
    - Too many "beachballs", read this: Beachballs
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  8. #8
    Mac Pro with 2 ati 5870

    Member Since
    Oct 05, 2009
    Posts
    236
    Specs:
    2011 13' Macbook Pro i5
    You might be able to replace the 5870 with an 5970,which integrates the twin 5870s into one card,might save you a buck too.

  9. #9
    Mac Pro with 2 ati 5870
    rippingviper's Avatar
    Member Since
    May 20, 2009
    Location
    Selkirk, Manitoba
    Posts
    264
    Specs:
    MacBook Air 13" , 21.5" iMac i5, White iPhone 4s 32gig, iPad 3 white 16 gig, i5 Mac Mini
    That depends doesnt it. I thought the video card has to be mac specific you can't just slam any old card in there.
    Show some Love give Reputation Reputation FAQ

  10. #10
    Mac Pro with 2 ati 5870

    Member Since
    Aug 20, 2010
    Posts
    2
    Terms youllers
    Anyone have luck flashing the 5970 and powering it in their Mac pro? I want to do this in my 2009 tower and I've heard few had some luck but I haven't seen a definitive guide around.

  11. #11
    Mac Pro with 2 ati 5870

    Member Since
    Nov 30, 2010
    Posts
    2
    Specs:
    2010 Mac Pro 3.2 Nehalem 5870, iPad 3g 64gb
    There's a guy on macrumors who is just waiting on the crossfire bridge to try the 5870 crossfire under windows, another guy cut a piece out of his case to fit the wiring. Sounds worse then it really is. He has picks

  12. #12
    Mac Pro with 2 ati 5870

    Member Since
    Oct 25, 2010
    Posts
    14
    Quote Originally Posted by harryb2448 View Post
    You anticipate we will tell you how to turn your Mac Pro into a hackintosh?
    What about this sounds like a Hackintosh? He wants to buy a MacPro and put an additional graphics card in it. You can't really make a Hackintosh out of a machine that's already a MACintosh.

    Maybe he wants to use the dual cards in Windows via bootcamp for gaming, but again, that isn't a Hackintosh.

  13. #13
    Mac Pro with 2 ati 5870

    Member Since
    Nov 30, 2010
    Posts
    2
    Specs:
    2010 Mac Pro 3.2 Nehalem 5870, iPad 3g 64gb
    Also i talked to an senior advisor in applecare and he said just to remove the PSU and 2nd 5870 in case u need to ship your mac for warranty repairs.So the 5870 crossfire set up will NOT void your applecare.

  14. #14
    Mac Pro with 2 ati 5870
    Slydude's Avatar
    Member Since
    Nov 15, 2009
    Location
    North Louisiana, USA
    Posts
    8,556
    Specs:
    2.8 GHz MacBook Pro 10.10.2, 8 GB mem, iPhone 6+
    Assuming that you could get crossfire working is it going to give you that big a performance boost? I haven't really researched it on the Mac side since I don't need it for what I do but I know that my wife did not notice a difference with many of the games she uses regularly on her Vista box.
    Sylvester Roque Former Contributing Editor About This Particular Macintosh

    "Got Time to breathe. You got time for music." Denver Pyle as Briscoe Darling

  15. #15
    Mac Pro with 2 ati 5870

    Member Since
    Jan 24, 2011
    Posts
    2
    Sounds awesome Good luck
    Good choice on getting an SSD as well - if you need any help choosing the best model to buy, let me know and I'll be happy to help out.

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