alt Hacker NewsThermal dissipation scales quartically with T, that's about as graceful as you can get from a physics POV, very few things scale at that rate.
COTs GPUs throttle at about 90-100C but that's because they have plastic parts and solder that melts. Those are relatively easy to eliminate.
We haven't tried much to scale up operating temp.
Apple tried the damnedest at that during their intel era. Silicon gets exponentially leakier at higher temperatures, and that will outpace quadratic growth easily.
(Electronics that works at 200C do exist, but they're not gonna meet a modern smartphone's specs, let alone a datacenter)