"Already, computers are waaay more powerful than human minds"
no they aren't. Seriously, watch (...)
Let's use the same reasoning the other way around.
"Human minds are waaay more powerful than computers"
no they aren't. Seriously, watch a human solve a hard sudoku. These humans attempt to mimic basic computer tasks. They take something like an hour to do the calculations to fill in the symbols. And usually fail at that. It takes a computer roughly a tenth of a millisecond to do that same bit of calculation. And it never fails.
See? Like I said, we just haven't figured out yet how to steer all the power of computers towards actual intelligence. The human brain is good at parallelism (which computers currently still struggle with) but neurons fire at rates up to 200 Hz while computer circuits switch more than ten million times faster. They are already better at playing chess, long considered by many to be an impossible thing as it required "real intelligence" that would never be achieved by computers. They'll be driving cars soon (they already can in a very limited way). That, too, was considered impossible, how could a computer possibly process all that visual data? And whenever we manage to get them to perform some task (like flying an airplane, for example), they do so vastly more accurately than we do.
I'm sure that, once someone starts building chips that were specifically designed to have lots of interconnections structured similar to a human brain (instead of the current topology that still works more or less like a big switchboard), and we scale it up to the same number of nodes, it will immediately outperform our brains by orders of magnitude. And then imagine what kind of architectures that brain could come up with.