a cpu collection wouldn't be too hard. just pay a visit to ebay
as for mine...
don't know if they work:
a few 486 CPUs
a few P1 cpus
a p2 slot cpu
a 500mhz p3
i did have an Athlon XP +2000, but i sold it on e-bay a few weeks ago.
the others above will be on e-bay too eventually. i'm tired of having stuff lying around that i have no use for.
as for old CPUs currently being used:
theres a p3 1ghz in my game server pc
yeah i've been checking ebay. working on winning some auctions but its hard to win when you can't sit and baby sit the auction. Hopefully i'll win this 31 cpu set that ends in about an hour.
Hey! i sort of started doing a collection myself but it's a bit tiny. I'm sure it will build up after I go through many processors =P. Right now it just consists of a Intel i486 DX2, Pentium, and a Pentium 2. Soon a Pentium 3 will be added to that collection =P.