Okay, let me take a guess,
Fast Faster Fastest
1 gig G4 Dual 1.4 G4 Dual 1.6 G4
1 Gig Ram 2 Gigs Ram 4 Gigs Ram
1 80 Gig HD 2 100 Gig Scsi 4 100 Gig Scsi
(1) 10/100 Ethernet + (1) Gig Ethernet
ATI Radeon 7500 with 32 MB DDR
Onboard UltraSCSI 160
2 PCI slots via riser
2 hotswap Powersupplies
4 HD bays, hotswap
$3500 $3995 $4500
Just a guess...