External GPU question

Discussion in 'Mac Accessories' started by quasar~, Aug 4, 2013.

  1. quasar~ macrumors newbie

    Jun 15, 2013
    I understand that with the current thunderbolt bandwidth is at 10 gbits/s, some gpus would be throttled down if it were used as an external gpu. When thunderbolt 2 comes out though, will a gpu such as an nvidia GeForce gtx 680 be able to be used to to its potential externally with a Mac mini or MacBook Pro hypothetically?

    The gtx 680 uses pcie 3.0 and I don't think I've seen any external pcie enclosures support 3.0 x16.
  2. Commy1 macrumors 6502a


    Feb 25, 2013
    I think that would be a fantastic idea, a way to solve some of the problems with apples lack of power under the hood.
    Although I have to wonder what kind of cards you have in mind. Desktop cards? MXM cards?

    I'm picturing a simple aluminum enclosure for a desktop GPU with a standard PCI 3.0 input for the GPU connected to a thunderbolt port which goes into the machine and a small external power supply not unlike some of the older external hard drives. Of course there would be access to the DVI/HDMI/MD/D ports but they'd likely go unused unless you run a second non-thunderbolt display.

    The only downside would be the extra cords and space needed on the desktop to facilitate the card. A factor in its own right that would likely make most people turn up their noses.
  3. quasar~ thread starter macrumors newbie

    Jun 15, 2013
    There already is a pcie 2.0 x16 external enclosure... But the thing is that it is a thousand bucks. I wonder when a pcie 3.0 version will come out.

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