Laptops:
1.83GHz Intel Core 2 Duo
1.6GHz Intel Core Duo
Desktops:
Intel Pentium 4 3.4GHz w/ HT
Intel Pentium D 3.0GHz
Intel Core 2 Duo 3.0GHz - Main computer - Just bought, rebuilt a 2GHz AMD opteron, motherboard died
I've got a bunch of other old computers also, but I hardly ever touch them. One Intel Pentium 1, two Pentium 2s, One Pentium 3, two first gen Pentium 4s, and an AMD Athlon 64.