Amazon.com: A-Tech 16GB for HP HP Z620 Workstation (1 x 16GB) PC3-12800 (DDR3-1600) ECC Registered RDIMM 240-Pin 2Rx4 1.35V Server Memory RAM : Electronics
HP Z620 Workstation C4Q25UP E5-2609 16GB RAM 160GB HDD No OS [Z620] - $685.00 : Professional Multi Monitor Workstations, Graphics Card Experts
HP Z620 - Refurbished Workstation | PC Server & Parts