When I want my mind blown, I compare former world's largest supercomputers to the tech I have around.
ASCI Red, the world's fastest supercomputer until the year 2000, was 150m² large, consumed 850,000W of power …and was slower than an iPhone 14 Pro, which uses ~6W.
ASCI Red had over 1TB of RAM, which may still sound impressive, except that RAM was 2× slower than the iPhone's 1TB SSD.
https://upload.wikimedia.org/wikipedia/commons/9/97/Asci_red_-_tflop4m.jpeg