All three of my servers are TYAN motherboards, dual 900Mhz PIII, 512ram, one 20Gb ATA 100 (for OS), built-in 10/100 lan (using full duplex 100 on cat5 cabling).
I use 3 Intel hubs (all are the same), although right now I can't remember what the model number is.
All of my workstations run 98se...