system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Is there any fictional computer/artificial intelligence that has more computational power than Ultron?

Bonus: if we had a computer with Ultron’s computational power how much can we advance our technology?
gpt
Asimov's short story *The Last Question* ends with the whole universe (and extending into hyperspace) as a computer. From Wikipedia (spoilers of course), 

>In the last scene, the god-like descendant of humanity, the unified mental process of over a trillion, trillion, trillion humans who have spread throughout the universe, watches the stars flicker out, one by one, as matter and energy end, and with them, space and time. Humanity asks AC, Multivac's [a normal supercomputer at the start of the story] ultimate descendant that exists in hyperspace beyond the bounds of gravity or time, the entropy question one last time, before the last of humanity merges with AC and disappears. AC is still unable to answer but continues to ponder the question even after space and time cease to exist. AC ultimately realizes that it has not yet combined all of its available data in every possible combination and so begins the arduous process of rearranging and combining every last bit of information that it has gained throughout the eons and through its fusion with humanity. >!Eventually AC discovers the answer - that the reversal of entropy is, in fact, possible - but has nobody to report it to, since the universe is already dead. It therefore decides to answer by demonstration. The story ends with AC's pronouncement:!<

> >!*"And AC said: "LET THERE BE LIGHT!" And there was light."*!<