External Video card

Discussion in 'MacBook Pro' started by AndrewForeva, Feb 24, 2011.

  1. AndrewForeva macrumors member

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    Feb 24, 2011
    #1
    Since Thunderbolt(lightpeak) support such high bandwidth. Would Nvidia and ATI start making external video cards? So even laptops with poor video cards (ie. 2011 13"mbp) can play 3D games smoothly?

    PS. just a thought, don't have any support.
     
  2. solarein macrumors regular

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    Feb 24, 2010
    #2
    The bandwidth isn't high enough for high end video cards, but might support a low-end card that outperforms the integrated Intel solution.
     
  3. AndrewForeva thread starter macrumors member

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    Feb 24, 2011
    #3
    Im not sure but intel states that it is capable of a speed of 900MB/s in both directions. So I don't know if that speed is good for decent video cards.
     
  4. solarein macrumors regular

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    Feb 24, 2010
    #4
    A standard 16-lane PCI express 2.0 slot is 8GB/s in both directions, for comparison.
     
  5. macmac88 macrumors member

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    Feb 7, 2011
    #5
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    Actually it might be possible... Take a look at ViDock. It's an external graphics card for laptops with ExpressCard (Apple removed it) It seems that ThunderBolt has more bandwidth than a ExpressCard slot. So it might be possible...
     
  6. amarcus macrumors 6502

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    London, UK
    #6
    ViDock runs at 2.5 Gbit/s. Thunderbolt runs at 10Gbit/s (4x faster). I'd really like to see if that extra bandwidth can improve things!
     
  7. aznguyen316 macrumors 68020

    aznguyen316

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    #7
    I was just gonna say, express card slot can do vidock, so if some options open up for the thunderbolt for an external video card, that'd be SICK! Then I'd really look back into a 13" or 15" base.
     
  8. murdercitydevil macrumors 68000

    murdercitydevil

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    Feb 23, 2010
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    #8
    Didn't the Intel announcement today mention that it can handle PCI-E speeds? This would be a good ass implementation of Thunderbolt (god i hate that name)
     
  9. henrik-s macrumors newbie

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    Nov 1, 2008
    #9
    I believe Thunderbolt is based on PCI-e 4x. GPUs generally run on 16x (or dual 8x for SLI/Crossfire).
     
  10. murdercitydevil macrumors 68000

    murdercitydevil

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    #10
    hmmm yeah that would really cripple it then. But even so the highest end video card running at 4x would probably still surpass the garbage Apple puts in MBPs.
     
  11. aznguyen316 macrumors 68020

    aznguyen316

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    #11
    It would cripple it some, but still, if it's possible then it makes for VERY good options. I mean, like discussed above, the current viDock option uses the much slower express card port and people get amazing results with ATI 5850's and 6000 series cards hooked up to it. I hope some method gets worked out for the light peak port and an external card with PSU.
     
  12. solarein macrumors regular

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    Feb 24, 2010
    #12
    It's PCIe 2x. A 4x connection to the Thunderbolt controller supports 2 Thunderbolt ports.
     

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