HP Z400 6-DIMM Workstation, HP Z400 6-DIMM 475W 85% Eff. Chassis, MS Windows 7 Professional 64-bit OS, Intel Xeon W3680 3.33 12MB/1333 6C CPU, HP 6GB (3x2GB) DDR3-1333 ECC RAM, HP No Graphics Option, HP 1.5TB SATA 7200,1st HDD, HP USB Standard Keyboard, H
HP Z400 ZL3.20 1000G 6G Win7 Pro 64-bit WS , Intel Xeon W3670 3.20 12MB/1333 6C CPU, 1000GB HDD SATA 7200, 6GB (3x2GB) DDR3-1333, 16X DVD+-RW SM SATA, HP No Option, Win 7 Professional 64, USB Laser Scroll
HP Z400 ZB3.2 1000G 4G Win7 Pro 64-bit WS , Intel Xeon W3565 3.20 8MB/1066 QC CPU, 1000GB HDD SATA 7200, 4GB (2x2GB) DDR3-1333, 16X DVD+-RW SM SATA, HP No Option, Win 7 Professional 64, USB Laser Scroll
HP Z400 ZB3.06 1000G 4G Win7 Pro 64-bit WS , Intel Xeon W3550 3.06 8MB/1066 QC CPU, 1000GB HDD SATA 7200, 4GB (2x2GB) DDR3-1333, 16X DVD+-RW SM SATA, HP No Option, Win 7 Professional 64, USB Laser Scroll