Along side with my dad I remember building a Intel 233 machine. My first machine by myself was a Athlon 1500+
My main systems over the years -- these are initial build specs as far as I can remember; they were all expanded later. I used to have a detailed spreadsheet with pics and stats, but I don't know if I still have it.
G1 (1995): Pentium 120, 8 MB, 1 GB drive, Matrox Millennium
G2 (1997): Pentium Pro
180@233, 16 MB (?) RAM, 1.6 GB hard drive, Matrox Millennium II
G3 (1999): Celeron
300@450, 128 MB (?) RAM, 8 GB hard drive (?), Intel i740+Voodoo2
G4 (2002): Athlon 1800+, 256 MB (?) RAM, 40 GB hard drive (?), GeForce Ti 4400
G5 (2004): Athlon 64 3500+, 1 GB (?) RAM, 200 GB hard drive, GeForce 6800GT
G6 (2008; in sig): E8400 @ 4 Ghz, 4 GB RAM, 640 GB hard drive, GeForce 8800 GTS 512
G7 (2011): i7-2600K @ 4+ Ghz, 16 GB RAM, 120 GB SSD, 750 GB hard drive, Radeon HD6870