[Certhas]

But the GPUs on the ground will be a lot cheaper to manufacture as they don't have to deal with space conditions.

It seems a real stretch to me to assume that costs for putting GPUs into space can ever come within a factor of 2-3 of putting them on the ground, even neglecting launch costs.

[shagie]

(expanding on this) A little bit old... but not that old in the scale of things...

The CPUs of Spacecraft Computers in Space https://www.cpushack.com/space-craft-cpu.html (that is still 2012) https://news.ycombinator.com/item?id=25470678 (this discussion is from 2020)