So about 2-3 hours or so ago I decided to take a computer from my parents closet that was really old, (wasn't usable) and take it apart and put back together, it was pretty fun.
Heres what I could make out from the specs:
Windows XP 32-bit
Intel Pentium 4 (had thermo grease on it so wiped off with a paper towel)
after wiping off thermo grease it said clearly on it "Intel Pentium 4 1.5 Ghz.
2 Ram sticks which seemed to be 512 mb each.
60 gigs of harddrive space.
It was pretty fun putting it back together because I had to put all the cords back, ect.
Not sure how many watts the power supply was though.
/discuss if you ever took apart a old pc and put it back together, idk.