It was not problem of attractivity. Considering that all you have to do is to pull PCIe from device and power from external PSU (like 450W at most), prices were damn high. I believe people remember MSI GS30 Shadow and its dock (which comes empty) and price tag on that thing. Price of that notebook is around $1300 and in combo with dock like $1800~2000. And then you have to buy GPU. I have checked, and it can come with prei-nstalled GTX 980 at cost of £2200 in UK. At that price, one can get equivalent notebook (Iris based chip without dGPU + SSD or two) and build separate desktop gaming system + getting monitor. eGPUs are good idea, I have nothing against. But it has to come at reasonable price. And I think Thunderbolt solution here is good way to go.

This is actually a very cool design! It would free up so much space from my desk. And considering that CPU's age much slower at least for now this thing could last for quite a while if only I need to change the GPU in about 2 years or so.

It was not problem of attractivity. Considering that all you have to do is to pull PCIe from device and power from external PSU (like 450W at most), prices were damn high. ... eGPUs are good idea, I have nothing against. But it has to come at reasonable price. And I think Thunderbolt solution here is good way to go.

I agree. External GPUs would open a pretty wide market for many people and if priced properly could have huge potential (much like external hard drives). It's an easy way to get extra performance or more monitors for those who don't know enough. But unlike external hard drives, something like this really isn't that simple. You can't really hot-swap a GPU, there could be some serious driver complications, and most importantly, would be difficult to effectively power it without there being a potential fire hazard. Remember - the idea is to make it user-friendly. It otherwise isn't really that hard to do an external GPU, for either desktops or laptops (it just isn't pretty looking).

You can't really hot-swap a GPU, there could be some serious driver complications.

It only takes a few minutes to delete old ones and install new drivers. Casual people probably will call somebody to change theire gpu anyway.

All-in-one PCs are a throwback to the 1980's when they were all the rage...;) I loathed them even then. They lost popularity rapidly as modular PCs took and held center stage (for all of the obvious reasons). Apple, of course, loves this kind of impractical, consumer-unfriendly design--which is the only reason some manufacturers continue to make them today, imo. They are still as impractical as ever. (Permanent, non-upgradable monitors, very little of the rest of the hardware is user serviceable or upgradable.) Ugh! No bargains, there. Can't see the appeal. A throwaway design.

With an external gpu like this one it's no more an AIO PC