Cray-1 supercomputer - photo

[mklotz]

And things have come a long way since the 70's; this from Wikipedia...

As of April 2020, the Folding@home network has over 2.3 exaFLOPS of total computing power.[53][54][55][56] It is the most powerful distributed computer network, being the first ever to break 1 exaFLOPS of total computing power. This level of performance is primarily enabled by the cumulative effort of a vast array of powerful GPU and CPU units.

An exaFLOP is 10^18 floating point operations per second.