I've got an old PB - Ram was an issue with it - I got 64mb in it, and thats all its ever gonna have. Big problem I had was only two PCI slots - so killing the onboard video (whopping 2mb) took one slot, and a nic card took the other. I was able to put a 13.6mb maxtor in it with no problem - and got one of those k62 base evergreen cpu's in without a problem. - the board wouldn't do AMDk6 voltage otherwise.
The board in it is the PB810 - also known as a FM530 (i think).
it pretty much serves as an IM machine for the kids and a UD cow. It runs very stable with W98.
- edit - I did have a 2nd HD in it for a while, there was room and it ran fine. Also as I remember, it would take just about any 32mb (66mhz) stick of ram, the problem was trying to put anything larger in. People would put 64mb sticks in and only see 8. Had to do with timing or something - so I've got 2 sticks of 32mb 66 in.
Ken