My first computer was an old Advent with a 486 SX33 that had a socket on board to upgrade to the DX2 66 max. It had a jumper you set bus speed to either 25 or 33 MHz. The first PC I built Myself was based on the AMD K6 166 on a Gigabyte board, S3 Virge with 4MB of memory, 16MB of Ram and a Maxtor 1.2 gig hard drive. Left the PC world alone until maybe a year or two ago when I started playing around with bikes and cars.