Here’s my history of processors I’ve owned in my primary computer. This does not count second, third, or fourth computers, laptops, servers, media, or Seti/Distributed machines. Only the computer which was my primary machine at the time counts.

1. IBM (Cyrix?) 486 SLC/2 66 MHz
2. Intel Pentium 166 MHz
3. Intel Pentium 2 266 MHz
4. Intel Celeron 300A @ 450 MHz
5. AMD Athlon 500 MHz
6. AMD Athlon 1000 MHz
7. AMD Athlon XP 2100+ 1733 MHz
8. AMD Athlon XP 2500+ 1833 MHz
9. AMD Athlon 64 3200+ 2000 MHz
10. AMD Opteron 165 @ 2200 MHz