Still a lovely design for a fictional peice :P though, under that frequency I would question whether one fan would be enough, of if it should be upgraded to liquid cooling

True. I used to have a PC that has Intel Pentium 4 Prescott, Which was often called "PresHot" for its notorious overheating. And that was shitty single core processor with 2.4 Ghz Clock speed.

But now we have things like Core I7 4790K that has 4.0 Ghz Clock speed while having 4 ( with Hyperthreading, Practically 8 ) cores, but still manages to go up to even higher clock ( 4.7 ~ 4.9 Ghz ) and do the job even better.

We also have something like Xeon E5 with more than 10 cores put in and is faster than old Pentium 4, but people use 'em without problem. Things evolve.

Well, Microprocessors sometimes manage to evolve to produce less heat, eat less voltage and amp, but pump up more performance - which is pretty insanely good.
GTX 900 Series was the perfect example. They eat less power and produce less heat, but they're much much more powerful compared to last gen NVIDIA cards.
We have mighty Titan X, around 3000 cuda cores at 1000 Mhz but it only has 1 small fan to cool the whole thing but still handles overclocking and runs games at 4K..

I have GTX960 for myself, and it doesn't even require fans to spin when i'm not running a game, and even if i run a game, the fan doesn't spin up too fast, making almost no noise. ( though, in my case, it's non-reference cooler with huge ass heatsink and 2 fans. )

Also fan speed is another factor. Even small / one fans can pack a megatons of punch if they spin fast. Though... faster RPM means more noise.
Perfect example will be the Delta Fans which are made for servers. They're not that big, but their RPM is insane, and sounds more like a jet engine, and blows air like jet engine.

So well... yea. When they actually manage to make a monster like this i'm pretty sure that they'll find a way to manage the heat.

Yeah, that could be a case too. Or, maybe mounted on better HMDs. We have Oculus DK2 at 1080p, but maybe in times where these kind of tech exists maybe we'll get to see 4K Oculus i guess.

now your just rubbing in the fact that my cards broken X33

Damn x.x

"The god of graphics cards"

And in ten years, we'll look back at it and be like "Oh man, this thing can't even play Half Life 69 episode 34 or Counter Strike 2025"

That happens every time xD