GoKawiilPentium Pro from 1995 runs modern Stockfish port strong enough to crush Kasparov
Developer Nicholas Carlini built a custom port of the Stockfish chess engine running on a 200 MHz Intel Pentium Pro from November 1995, estimating its playing strength at roughly 3300 Elo versus Kasparov's near-2800 rating in 1996. He connected the vintage machine to the internet via a Realtek Ethernet card so the public can play against it directly.