Voodoo 2 has 2 pixel processing chips, each with 1 pipe, so voodoo2 = 2 pipes. Banshee has same pixel processor as voodoo2, but only 1, so banshee = 1 pipe. voodoo 3 = 2 pipes voodoo4, 5 5500,, 5 6000 all use vsa100 chips. Each chip has 2 pipes. voodoo4 = 2 pipes(1 vsa100 chip) voodoo5 = 4 pipes (2 vsa100 chips) voodoo56k = 8 pipes (4 vsa100 chips)