Solved: Z400 RAM - Page 3 - HP Support Community - 6148900
HP Z400 6DIMM Workstation | Configure-to-Order
HP Z400 Workstation Intel Xeon 6Core 8GB DDR3 RAM, 1TB SATA HDD, AMD FirePro Graphics Card Windows 7
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Solved: Z400 Aftermarket Upgrades - Page 5 - HP Support Community - 5691838
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
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Solved: Z400 RAM Upgrade from 8GB to 12GB or 16GB - HP Support Community - 6746942
HP Z400 Workstation Product Specifications | HP® Customer Support
新素材新作 アン ロザージュエーテック A-Tech 128GB Kit 8x16GB Memory RAM for Dell PowerEdge C6220 II - DDR3 133 送料無料 kids-nurie.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
HP Z400 Workstation MT Intel Xeon W3550 3.07GHz 8GB RAM No HDD No OS | eBay
Upgrading an hp z400 (six slots) - HP Support Community - 7156445