“In 1978, the Cray 1 supercomputer cost $7 Million, weighed 10,500 pounds and had a 115 kilowatt power supply.”
A $70 Raspberry Pi on a 5 watt supply beat it by 4.5 times in 2012. The 2020 Pi 400 hit 78.8 times the Cray on Livermore Loops, and four copies of the benchmark running at once on a PC reached 1134 times. Longbottom ran the acceptance tests on the first Cray delivered to the UK, so these numbers come from the man who benchmarked the original. Your laptop is a thousand supercomputers waiting on Slack to load.