For HP Z800 Workstation Power Supply 468929-004 508148-001 840W DPS-850DB A - AliExpress
HP Z800 Workstation 2x QC E5506 2.0GHz 24GB RAM 600GB SSD Quadro K4000 Win10 Pro | eBay
New HP Z800 Workstation Dual LGA1366 System Board Motherboard [576202-001, 460838-002] - $245.00 : Professional Multi Monitor Workstations, Graphics Card Experts
Amazon.com: Genuine 460838-002 576202-001 HP Z800 Workstation Motherboard System Main Board Compatible Part Numbers: 460838-002, 576202-001 : Electronics
HP Z800 Workstation/1x I-Xeon 4-Core E5530 2.4Ghz/4GB/NO HDD/Fan Missing