HP Workstation Z200

Form Factor: Convertible Minitower
Processor: Single Socket Core-i, Xeon 3400 Dual/Quad Core
Max. Memory: 16GB ECC
Graphics: Up to Nvidia Quadro FX1800 or ATI FirePro V5700
Expansion Bays: 3x 3.5", 3x 5.25"
Expansion Slots: One Gen2 x16 PCIe
                                One Gen1 x16 (x4) PCIe
                                One Gen1 x4 (x1) PCIe
                                One Gen1 x1 (x1) PCIe
                                Three PCI
Performance Category: Excellent

HP Workstation Z400

Form Factor: Convertible Minitower
Processor: Single Socket Xeon 3500 Dual/Quad Core
Max. Memory: 24GB ECC
Graphics: Up to Nvidia Quadro FX4800 or ATI FirePro V7750
Expansion Bays: 2x 3.5", 3x 5.25"
Expansion Slots: Two Gen2 x16 PCIe
                                One Gen2 x8 (x4) PCIe
                                One Gen1 x1 PCIe
                                Two PCI
Performance Category: Excellent

HP Workstation Z600

Form Factor: Narrow Minitower
Processor: Dual Socket Intel Xeon 5500 series Dual/Quad Core
Max. Memory: 24GB ECC
Graphics: Up to Dual Nvidia Quadro FX5800 or ATI FireGL V7700
Expansion Bays: 2x 3.5", 2x 5.25"
Expansion Slots: Two x16 PCIe
                                One x8 (x4) PCIe
                                One x1 PCIe
                                Two PCI
Performance Category: Extreme Brute Force

HP Workstation Z800

Form Factor: Standard Minitower
Processor: Dual Socket Intel Xeon 5500 series Dual/Quad Core
Max. Memory: 192GB ECC
Graphics: Up to Dual Nvidia Quadro FX5800 or ATI FireGL V7700
Expansion Bays: 4x 3.5", 3x 5.25"
Expansion Slots: Two Gen2 x16 PCIe
                                Two Gen2 x8 PCIe
                                One Gen2 x8 (x4) PCIe
                                One Gen1 x8 (x4) PCIe
                                One PCI
Performance Category: Extreme Brute Force