HP Z6 G4 Second 2nd CPU Riser Board Heatsink 900199-001 858085-001 844782-001 [844782-001] - $647.99 : Professional Multi Monitor Workstations, Graphics Card Experts
Z6-G4 HPE Z6-G4 Workstation with 1000W Power Supply
914283-001 HP MOTHERBOARD FOR HP Z6 G4 WORKSTATION - SYSTEM BOARD WINDOWS 10 ( 1 ) ONE LGA3647 SOCKETS ( OPTIONAL 2ND CPU / DIMMS VIA CONNECTOR ) 6 DIMM SLOTS -
HP Z6 G4 Workstation Specifications | HP® Customer Support