HP Z400 Workstation MT Intel Xeon W3550 3.07GHz 8GB RAM No HDD No OS | eBay
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HP Z400 Workstation Intel Xeon 6Core 8GB DDR3 RAM, 1TB SATA HDD, AMD FirePro Graphics Card Windows 7
Upgrading an hp z400 (six slots) - HP Support Community - 7156445
HP Z400 Computer Workstation (Configure To Order) on SALE
HP Z400 6DIMM Workstation | Configure-to-Order
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
HP Z400 Workstation Xeon Quad Core 2.6GHZ | Ram DDR3 8GB | HDD 500GB SATA (Refurbished)
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
Managed to get an old HP Z400 workstation for the equivalent of $75 USD. Xeon W3520, 6x2gb of ram and I replaced the Quadro FX580 with a GT 730 I had laying
Solved: Z400 Aftermarket Upgrades - Page 5 - HP Support Community - 5691838
HP Z400 48GB Memory/Ram Install - YouTube
Refurbished HP Z400 Workstation VS933AV | Intelligent Servers UK
HP Z400 Workstation Product Specifications | HP® Customer Support
HP Z400 Gaming PC Xeon W3550 3.06 GHz - 16GB Ram - 240 SSD 1TB Hard drive - WIFI - 4GB Graphic card 3 Games Installed: Buy Online at Best Prices in Pakistan | Daraz.pk