Two questions, will 2x ati radeon HD 4870 work, and ddr3 RAM in 09 Mac Pro work in 08

Discussion in 'Mac Pro' started by MythicFrost, Apr 15, 2009.

  1. MythicFrost macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #1
    Hi, I'm wondering what will be the consequences of having two ATI Radeon 4870 HD in my mac pro, I heard something about being a lack of cables, I'm also wondering if it will overheat or not, and if I'll have enough power supply from the Mac Pro to support 2?

    Also if I have two cards, can programs store memory in the second one as well, as if I had a 1GB card?

    I'm also wondering if the DDR3 RAM released with the 2009 Mac Pro model, is compatible with the 2008 Mac Pro model...?

    Kind Regards
    Me
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    No idea about the first question but RAM from a 2009 Mac Pro won't even fit in the slots in a 2008 model, let alone work.
     
  3. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #3
    Haha, ok, thanks for letting me know.

    Kind Regards
    Me
     
  4. CaptainChunk macrumors 68020

    CaptainChunk

    Joined:
    Apr 16, 2008
    Location:
    Tempe, AZ
    #4
    Yes, the 2006/2008 models use DDR2 FB-DIMMs, while the 2009 models use DDR3 unbuffered DIMMs. Completely different.
     
  5. MythicFrost thread starter macrumors 68040

    MythicFrost

    Joined:
    Mar 11, 2009
    Location:
    Australia
    #5
    I see, and is unbuffered ddr3 ram better?

    Kind Regards
    Me
     

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