HP Z600 Workstation Tower PC Dual Xeon X5506 12GB RAM 240GB SSD 2TB HD — Tech Recyclers
48GB (6x8GB) DDR3 PC3L-10600R ECC Reg Server Memory RAM for HP Z600 Rev C2 Only | eBay
4GB RAM Memory for Compaq HP Z Series Workstations Z600 Workstation Black Diamond Memory Module DDR3 ECC UDIMM 240pin PC3-10600 1333MHz Upgrade - Newegg.com
461439-001 HP Z600 WorkStation Motherboard
HP Z600 Workstation, 1x Xeon E5530 2.40GHz, 8GB DDR3 RAM - Barebone PC | eBay