The first computer I ever touched was a Compaq "Portable"..
Intel 8088 @ a screaming 4.77MHz
128K of Ram
No Harddrive!
http://oldcomputers.net/compaqi.html
286
386
486/66
pentium/90
pentium/133
pentium/200
a couple pentium 2's
a few more something elses... I don't remember
right now:
Dell 8200 (P4/2GHz, 2GB Ram, 80 GB HD) desktop
IBM Thinkpad X24 (P3/1.13GHz, 1GB Ram, 40 GB HD) laptop