Thread: External GPU for MBP

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  1. #31  
    Member Lucas Wilkinson's Avatar
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    If I were to buy this

    https://bizon-tech.com/us/bizonbox3-egpu.html/

    and chuck a decent card in it. Can I run a TB3 to TB2 cable until I upgrade to a machine with TB3? or are the different protocols or something?
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  2. #32  
    Senior Member Mikael Lubtchansky's Avatar
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    No, afaik you can have a TB3 computer and use an adapter for TB1/2 accessories
    but a TB2 computer will never be able to connect to any TB3 device even with an adapter...
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  3. #33  
    Member Lucas Wilkinson's Avatar
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    Quote Originally Posted by Mikael Lubtchansky View Post
    No, afaik you can have a TB3 computer and use an adapter for TB1/2 accessories
    but a TB2 computer will never be able to connect to any TB3 device even with an adapter...
    Thanks Mikael. Looks like I'll be throwing out my MBP. Windows, here I come.
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  4. #34  
    Senior Member andrewhake's Avatar
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    Quote Originally Posted by Mikael Lubtchansky View Post
    No, afaik you can have a TB3 computer and use an adapter for TB1/2 accessories
    but a TB2 computer will never be able to connect to any TB3 device even with an adapter...
    http://www.apple.com/shop/product/MM...bolt-2-adapter

    "As a bidirectional adapter, it can also connect new Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port.*
    * Requires macOS Sierra."

    Of course you should only expect the theoretical speeds of the slowest part of that combination.

    https://support.apple.com/en-us/HT207266

    "You can use the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter to connect your Mac with Thunderbolt or Thunderbolt 2 ports to these devices:
    -Thunderbolt 3 (USB-C) self-powered devices, such as Thunderbolt 3 displays and Thunderbolt 3 self-powered hard drives
    -Mac computers that have Thunderbolt 3

    The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter doesn't support connections to these devices:
    -Thunderbolt 3 (USB-C) bus-powered devices
    -USB-C devices, displays, and adapters that don't have Thunderbolt"
    Last edited by andrewhake; 11-02-2016 at 04:00 AM.
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  5. #35  
    Senior Member Blair Thornton's Avatar
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    Quote Originally Posted by Daniel Reed
    To keep myself up and running for now, I'm going BisonBox2 as well, with Titan X 12GB (Maxwell)
    Read, heard, and have seen "magic" with that combo on Macs over TB1/2, especially in Resolve.
    (Just waiting for delivery now, ordered the Maxwell based Titan X directly from EVGA)
    Daniel, can you post a link to where you're getting this Titan X from EVGA? TIA.

    Thinking of doing same with Thunderbolt3 and use a bizonbox3.

    EDIT: I see Bison has an option to include the Titan X. https://bizon-tech.com/us/bizonbox3-egpu.html/
    Last edited by Blair Thornton; 11-02-2016 at 04:39 AM.
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  6. #36  
    Senior Member Mikael Lubtchansky's Avatar
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    Quote Originally Posted by andrewhake View Post
    http://www.apple.com/shop/product/MM...bolt-2-adapter

    "As a bidirectional adapter, it can also connect new Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port.*
    * Requires macOS Sierra."

    Of course you should only expect the theoretical speeds of the slowest part of that combination.

    https://support.apple.com/en-us/HT207266

    "You can use the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter to connect your Mac with Thunderbolt or Thunderbolt 2 ports to these devices:
    -Thunderbolt 3 (USB-C) self-powered devices, such as Thunderbolt 3 displays and Thunderbolt 3 self-powered hard drives
    -Mac computers that have Thunderbolt 3

    The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter doesn't support connections to these devices:
    -Thunderbolt 3 (USB-C) bus-powered devices
    -USB-C devices, displays, and adapters that don't have Thunderbolt"
    Yes thanks Andre I just read that TB3 LaCie drives will work with an adapter on older TB2 computers too...

    I was mislead by this akitio interface that seems to be unidirectional :
    https://www.akitio.com/adapters/t3t
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  7. #37  
    Senior Member Blair Thornton's Avatar
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    Quote Originally Posted by andrewhake View Post
    "As a bidirectional adapter, it can also connect new Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port.*
    * Requires macOS Sierra."

    Of course you should only expect the theoretical speeds of the slowest part of that combination.
    Got my Thunderbolt3 to TB2 adapter yesterday. It's a pleasant surprise to discover it's bi-directional.

    Last edited by Blair Thornton; 11-02-2016 at 05:17 AM.
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  8. #38  
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    Keep in mind:

    The 4 Core 6000 Series Skylake Processors only have 16 PCIe Lanes to work with. Not all 16 are spent on the TB3 ports AND TB3 is only operating at 40Gb/s.

    Sticking a Pascal Titan-X into an eGPU would likely render zero gains over a GTX 1080. Also, Vanilla GTX 1080's are now down to $600-650, in stock at many big retailers. I think we're going to see a lot of unhappy Titan-P customers in a few months when a 1080Ti releases OR a 12-16GB version. Unless the drivers and high-end GPU driven apps mature in the coming months, the gains are rather small for 2X the price.

    If you really feel the need, here is NVidia's order page:
    http://www.geforce.com/hardware/10series/titan-x-pascal

    Edit: I'll add in MOST use cases. The margin of difference further lessens if you have less than an 8 Core machine to handle a Titan-X.
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  9. #39  
    Senior Member andrewhake's Avatar
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    Quote Originally Posted by Mikael Lubtchansky View Post
    Yes thanks Andre I just read that TB3 LaCie drives will work with an adapter on older TB2 computers too...

    I was mislead by this akitio interface that seems to be unidirectional :
    https://www.akitio.com/adapters/t3t
    Andrew. :)

    No problem.
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  10. #40  
    The Apple TB3 to TB2 adapter is bi-directional and at $49 (USA) is the cheapest of any such adapter on the market. It's also the most compact one out there and will allow connecting TB3 devices to older systems with TB2 ports. So confusing that Apple can hit a home run with an adapter like this one and then still charge $30 for a standard USB-C cable that Monoprice or Anker charge $8 for...
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