Atari 400 16k (started programming on age 8)
BBC Micro 32k (programmed 6502 assembler on)
Amiga 500 (early 1.2 version was in use for 7 years)
80286 (college and first year uni)
80486SX (IBM PS/1) then upgraded 80486DX (uni computer)
Cyrix 586 (did not keep long unstable)
Cyrix 686 (final year at Uni, fast computer)
Pentium 2 266 (first computer out of uni)
Pentium 3 x 2 (had a couple on Abit boards both died)
Pentium 4 (used for ages)
Core 2 1.86 (good but would not hold overclock, still in use in my conservatory as backup HTPC machine!)
i5 750 (main development rig, now put into HTPC case)
i7 4770k (main development rig)
There the main computers, does not include my servers, or vintage items purchased over the years.