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SmileyAja on 19 January 2017
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FunFan said:
SmileyAja said:

The Traktor speculation about the additional docks with GPUs is impossible, all external GPU docks you see around use Thunderbolt 3, which is based off USB-C but is improved and faster, it's 40gbps compared to 10gbps, and the Switch won't be using Thunderbolt, IIRC the nVidia tech isn't compatible with Thunderbolt anyways, so that's a no go.

Now OP's in the ballpark but he doesn't specify his calculations, here's one on Reddit that does a better job of explaining this type of performance;

https://www.reddit.com/r/NintendoSwitch/comments/5jlbub/clock_speeds_power_efficiency_and_why_the/

We'll probably be seeing closer 750 GFLOPS though (as the P1 can do that max), but time will tell. This is using a die shrink of Maxwell and not full on Pascal for a "worst" case scenario.

It has been done: http://www.anandtech.com/show/9963/asus-booth-tour-at-ces-2016-10g-switches-external-gpu-dock-usb-c/2

"The external GPU dock on display from ASUS is a little different again to the laptops and AIO mentioned in the previous paragraph, by taking the PCIe lanes and passing the data over a Type-C interface. Using a proprietary IC, ASUS is able to carry 32 Gbps of data over a passive Type-C cable (note, Thunderbolt 3 is limited to 20 Gbps over passive) to a dock that can decode the data. That being said, there were two data cables going from the dock to the laptop, making me think that this is actually two lots of 20Gbps maximum and the IC logic is there to reconstruct the bits from different PCIe lane data streams."