GTX 680 4GB running two 27" cinema displays ?

Discussion in 'Mac Pro' started by Rodrigo Lizana, Dec 7, 2014.

  1. Rodrigo Lizana macrumors newbie

    Dec 7, 2014
    Santiago Chile
    Hi all :

    I'm in the process of upgrading my 4.1 2x2.26 Ghz Mac Pro to handle 2k Da Vinci resolve color correction and Avid editing.

    I started with the drives and now it's all SSD. 4x 480GB raid 5 SSD (under Apple Raid controller card) plus another 480GB SSD on the second optical Bay as a start up disc. With the Raid I'm getting something like 350/550 write/read speeds which is Ok for what I need.

    Second I'm for the GPU. I've got 3x EVGA GTX 680 4GB RAM (flashed for Mac). One goes inside the Mac as a the regular video card and the two others will go inside a Cubix Xpander for GPU processing. But my questions goes for the one inside the Mac... :

    Can I run two 27" Apple Cinema displays at max resolution from one GTX 680 ?.
    Should I use both DVI ports (one for each monitor) on the GTX for that purpose ?. Do I need any adapters ?.

    Any help will be greatly appreciated.

    Thanks a lot !!!.

  2. RoastingPig macrumors 68000


    Jul 23, 2012
    You need the dvi-"dual link" to mini displayport from atlona $100...they also offer the dvi non dual to mini displayport that will not work....paired with one displayport regular to mini displaport adapter $7
  3. Rodrigo Lizana thread starter macrumors newbie

    Dec 7, 2014
    Santiago Chile
    Thanks for the suggestions. There also seems to be an Apple DVI dual link to mini display port available (much smaller).

    The GTX 680 4GB, I believe it also comes with a display port. Wouldn't make more sense to go from there into the mini display port (via adapter) to the monitor ?.

    Thanks again !

  4. Synchro3 macrumors 68000


    Jan 12, 2014

    No, use one Display Port and one DVI Port.

    The Apple adapter is an MiniDisplayPort to Dual-Link-DVI-Adapter, not DVI Dual Link to MiniDisplayPort. You need MDP for your LED cinema display.

    You need also a DisplayPort to MiniDisplayPort adapter like this:

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