This is my HP Z400, upgraded with a Xeon X5690. 12gb of ram, 2x500gb SSD, 2x250gb HDD, GTX 960 (the gpu is totally overkill lol). This is my first server! Running pterodactyl
Hp Z400 Workstation DT Xeon 2.8 GHz - HDD 500 GB RAM 16GB | Back Market
HP Z4 G4 Memory Installation - YouTube
CMS 8GB (2X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z400 Workstation for Server Only - B80 at Amazon.com
16GB KIT (4 x 4GB) for HP-Compaq Z Workstation Series Z200 Z400 (4 DIMM Slots)
HP Z400 Gaming Computer PC GeForce GTX 1060 256GB SSD 12GB RAM [Z400] - $825.00 : Professional Multi Monitor Workstations, Graphics Card Experts
HP Z400 Workstation Xeon -W3565; CPU 3.2GHz; 4GB RAM ; 500 GB HDD | eBay
4GB RAM Memory Upgrade for HP Workstation Z400 PC3-10600E DDR3 1333MHz 2Rx8 ECC Unbuffered UB DIMM Module (MemoryMasters) at Amazon.com
HP Z400 Workstation MT Intel Xeon W3550 3.07GHz 8GB RAM No HDD No OS
A-Tech 24GB ECC Unbuffered Memory Kit (6 x 4GB) for HP Z400 Workstation - ECC UDIMM DDR3 PC3-10600 1333MHz 240-Pin DIMM 2Rx8 1.5V Dual Rank RAM (AM080899) at Amazon.com
CMS 12GB (3X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z200, Z210, Z400, Z600, Z800 for Server Only - B81 at Amazon.com