I have 6 (working) computers.
Starting from old to new:
HP Pavilion (desktop form factor, not tower) from 1995 or so:
Intel Pentium 133MHz (originally 75MHz, swapped CPU's recently)
40MB DRAM (originally 4MB, then 16MB (4X4), now 40MB (2X4, 2X16))
2GB hard drive (originally 768MB, that died, then also had 5GB, but I removed it)
FDD drive
CD-ROM 24X (originally 4X but replaced with a newer drive)
Sager 86 Notebook (got it for free last year) from 1997:
Intel Pentium 133
16MB RAM
1.2GB HDD
640x480 color screen
PCMCIA 16 bit Ethernet adapter with stupid proprietary useless port(currently in the process of soldering a real Ethernet port to the stupid thing)
FDD drive
Noname PC (my friend gave it to me)
Intel Pentium MMX 200MHz (originally had the 133, but moved it to the HP when he gave me a PMMX 200 chip)
64MB RAM (originally 4X16 DRAM, but moved 2 to the HP, so now 32MB SDRAM + 2X16 DRAM)
5GB HDD (originally had none, then I put a 40GB from dead laptop, but it died, so I put in the 5GB out of the HP)
CD-RW 4x4x24 drive
Diamond Stealth II S220 (Verite-based) PCI graphics
FDD drive
Compaq Presario motherboard (now dead, but idk, might fix it somehow)
Intel Celeron 500MHz
256MB PC133(?) SDRAM (2X128)
i810 graphics
IBM ThinkPad A21p
Intel Pentium 3 850MHz
512MB PC133 SDRAM (2X256)
ATi Rage Mobility 128 M3 16MB graphics
DVD-ROM drive
30GB HDD
1600x1200 color, 15.4" screen
FDD drive
Compaq Presario (rebuilt with new parts):
AMD Sempron 64-bit 2600+ (overclocked to 1.84GHz, originally 1.6)
768MB PC2200(?) DDR SDRAM (256 + 512, board supports PC3200 but I don't have any supported modules)
60GB HDD
nVidia GeForce4 MX420 64MB AGP4X graphics
24X CD-ROM and CD-RW drives
FDD drive
PowMax 300W dual-fan PSU
HP Pavilion 734n (heavily modified main PC):
AMD AthlonXP 2600+ (2.13GHz) (originally 2400+ but that board died and after warranty repair, they put in a 2600+)
80GB and 120GB HDD's (originally 80GB, then added the 5GB for Linux, then replaced with the 40GB, and then replaced with a new 120GB)
FDD drive
ATi Radeon X1600Pro 512MB AGP4X graphics (originally had the MX420, replaced it)
Rosewill 500W PSU (originally had a 200W, but that wasn't enough for my new graphics card)