3 x 27" Cinema Display Setup, 2 x Graphics card & Mercury Accelsior, will they fit?

Discussion in 'Mac Pro' started by spacedesign911, Jun 29, 2012.

  1. spacedesign911, Jun 29, 2012
    Last edited: Jun 29, 2012

    spacedesign911 macrumors regular

    Joined:
    Jul 22, 2010
    Location:
    Dublin, Ireland
    #1
    Hi all, Im running 2 27" Apple cinema displays on my 2012 Mac Pro Hex Core with the ATI 5870 card.

    I wish to add a third 27" Apple cinema display and whilst discussing this with the Apple store they tell me I need to add either another 5770 or 5870 card to the Mac Pro.

    I intend working off a Mercury Accelsior PCI Card when Mountain Loin debuts. Can all these 3 items fit? and if so do I need to keep the Mercury Accelsior PCI Card in a particular slot for best performance? Thanks in advance for your thoughts.
     
  2. Inconsequential macrumors 68000

    Joined:
    Sep 12, 2007
    #2
    You *can't* easily run a 5770+5870 in a Mac Pro IIRC as the 5770 requires a 6-pin PCI-E power connector.

    Your options are, in order of ease (best at the top).

    1. Buy a GT120
    2. Buy two 5770s and ditch the 5870.
    3. Wire up a split 6 pin so all three connectors share power.

    The accelerator card goes in slot 4 (top) and the GT120 goes in slot 2.
     
  3. spacedesign911 thread starter macrumors regular

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    Jul 22, 2010
    Location:
    Dublin, Ireland
    #3
    Hi Concorde thanks for the reply, can I ask why its not easy to connect the 2 cards? I was under the impression I could, and Apple themselves have suggested I do, however thats sales, so I appreciate your opinion.

    Here is a guy running 3 screens with 1 x 5870 and and 1 x 5770 and its running ok, but he doesn't have a mercury accelsior.
    http://www.youtube.com/watch?v=bI2zsK341hI&feature=plcp

    I see however he has an updated setup with 2 x 5870 cards.
    http://www.youtube.com/watch?featur...&v=ODqakW3M8bo&annotation_id=annotation_35310
     
  4. jenzjen macrumors 68000

    Joined:
    Aug 20, 2010
    #4
    I"m easily running a 5870 + 5770; the only extra item required is a $5 splitter to create a power source for the 5770. I can't say whether the Mercury card you want would fit since both cards are dual height leaving you only 1 x4 slot left.

    Coincidentally enough, those videos are from the same person who shows you all you need is said $5 power cord.

    http://www.youtube.com/watch?v=ui6q_6k1vxA&feature=plcp
     
  5. spacedesign911 thread starter macrumors regular

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    Jul 22, 2010
    Location:
    Dublin, Ireland
    #6
    I'll check in with OWC and see what they say about the pci ssd fitting, on a side note how is graphic performance running 3 screens from a 5870, should I spend the cash on the extra graphics card over the Altona?

    ----------

    Would you have a link to your splitter? Amazon have a lot of options, 6 pin 4 pin etc.
     
  6. jenzjen macrumors 68000

    Joined:
    Aug 20, 2010
    #7
    I tried the Atlona before buying the 5770. If you only use the Mac OS, give it a shot since it pushes the full resolution to the 3rd monitor. If you use Windows/boot camp, it is a no go since it will only push 720p to that 3rd monitor, which looks horrible.

    The splitter I bought is StarTech.com PCIEXSPLIT6 6-Inch PCI Express Power Splitter Cable.
     
  7. spacedesign911 thread starter macrumors regular

    Joined:
    Jul 22, 2010
    Location:
    Dublin, Ireland
    #8
    Thanks Jenzjen, mac os only here, did you feel the single card was stressed feeding 3 screens? Is there a difference with 2 cards feeding the 3 screens?, 50 euro difference in the Atlona and a 5770?
     
  8. jenzjen macrumors 68000

    Joined:
    Aug 20, 2010
    #9
    I didn't notice a difference but am not gaming or heavy visual work so don't think I stress it to begin with. In the US, there is a 200 difference in cost since the Atlona is ~50 at Amazon.
     
  9. Mr Ski 73 macrumors regular

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    Dec 11, 2007
    #10
     
  10. spacedesign911 thread starter macrumors regular

    Joined:
    Jul 22, 2010
    Location:
    Dublin, Ireland
    #11
    Just a note to thank Jenzjen, for the heads, ups, 3rd 27" LED screen arrived with a 5770 card from apple, I ordered a couple of Dr Bott Minidisplay port and USB extension leads, and the Startech 6 pin PCI splitter from Amazon, should have this all connected in a day or so, I'll let you know how it goes.
     

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