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Thunderbolt 3 is certainly enough - see its use in eGPU setups. (My understanding is that this actually runs PCIe lines over it.)
by tgb 8y ago
Thunderbolt 3 is certainly enough - see its use in eGPU setups. (My understanding is that this actually runs PCIe lines over it.)
- k__ 8y agoNice, but are 4PCIe lanes enough (I read TB3 emulates 4)? Don't GPUs use more lanes?
- detaro 8y agoThey do, but you can go quite far without having them, so it's likely not much of an issue It seems unlikely you'd do very GPU-bandwidth intense applications which such a hybrid device.
- Postremus 8y agoAt least for graphic cards, 4 lines are enough. Linus tech tips did some videos on external gpu enclosures (e.g. [1]). Conclusion was, if I recall correctly, that the performance declined around 10% when using such an enclosure. [1] https://www.youtube.com/watch?v=2D79GsrEqe4 https://www.youtube.com/watch?v=2D79GsrEqe4
- k__ 8y agoPretty cool. Question is, could you fit that tech in a smartphone?
- rbanffy 8y agoIn theory, at least, you could build a cellphone around a GPU with a couple ARM cores thrown in and keep most of the GPU powered down while you are not docked. When you are connected to a decent power supply over USB-C, you could fire up those cores, provided your phone's back is a massive heat sink (a dock can provide the airflow). It won't beat a 300W monster or accurately predict the future weather for 10 years, but it'd be more than reasonable for casual gaming.
- jannes 8y agoThunderbolt 3 bottlenecks many GPUs. It's not fast enough yet. More here: https://www.youtube.com/watch?v=u7Zw-DlTn-M https://www.youtube.com/watch?v=u7Zw-DlTn-M