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I have a workstation with a recent graphics adapter: Nvidia Gefore FX3700. As I want to use that adapter for long running CUDA programms, it might be very useful not to run also my desktop graphics on the same device. Unfortunately I cannot plug in further graphics boards into that machine. So I've searched and found that display link might be a solution: Not using the FX3700 for graphics but for CUDA and then using the DisplayLink for desktop. As I've read this I thought: "wait!, it would be awesome to just not plug a normal graphics board into the computer but a high performance CUDA device" which would have the enormous advantage of being portable.
But I guess this is not possible since I assume that no external interface has a memory bandwidth which capable of high performance computing (e.g. similar to PCIe), right?
It is now the future and it has happened. Still bloody expensive though (about EUR 200 for an external PCIe case with power, connected via thunderbolt) – Hennes – 2015-12-10T15:58:16.890
This article is a very nice reading about external GPUs: https://www.reddit.com/r/eGPU/comments/5jpf2x/diy_egpu_101_introduction_to_egpu/
– jjmontes – 2017-12-11T18:31:43.007Thunderbolt can handle PCIe - don't know how many
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's though. Also don't think there are any external PCIe cards yet but it seems to be something that might happen in the future. – LawrenceC – 2012-03-12T16:27:26.583