![Amazon.com: HP Z400 Workstation with Intel Xeon W3505 2.53GHz 2-Core CPU, 4GB DDR3 RAM, 250GB HDD, Quadro FX1700, Windows 7 Professional Installed : Electronics Amazon.com: HP Z400 Workstation with Intel Xeon W3505 2.53GHz 2-Core CPU, 4GB DDR3 RAM, 250GB HDD, Quadro FX1700, Windows 7 Professional Installed : Electronics](https://m.media-amazon.com/images/I/51HVagCP1EL._AC_UF894,1000_QL80_.jpg)
Amazon.com: HP Z400 Workstation with Intel Xeon W3505 2.53GHz 2-Core CPU, 4GB DDR3 RAM, 250GB HDD, Quadro FX1700, Windows 7 Professional Installed : Electronics
![Amazon.com: HP Z400 Workstation W3565 Quad Core 3.2Ghz 16GB 1TB 2TB Q2000 Win 10 Pre-Install (Renewed) : Electronics Amazon.com: HP Z400 Workstation W3565 Quad Core 3.2Ghz 16GB 1TB 2TB Q2000 Win 10 Pre-Install (Renewed) : Electronics](https://m.media-amazon.com/images/I/31a76zAJClL._AC_UF894,1000_QL80_.jpg)
Amazon.com: HP Z400 Workstation W3565 Quad Core 3.2Ghz 16GB 1TB 2TB Q2000 Win 10 Pre-Install (Renewed) : Electronics
![Heatsink Fan 463981-001 463990-001 For Hp Z400 Z600 Z800 Workstation Processor Cpu Radiator Heat Sink Cooling Fan Original - Pc Hardware Cables & Adapters - AliExpress Heatsink Fan 463981-001 463990-001 For Hp Z400 Z600 Z800 Workstation Processor Cpu Radiator Heat Sink Cooling Fan Original - Pc Hardware Cables & Adapters - AliExpress](https://ae01.alicdn.com/kf/S5282ce2a07134b6ba02c5ae8d59cf296k.jpg_640x640Q90.jpg_.webp)
Heatsink Fan 463981-001 463990-001 For Hp Z400 Z600 Z800 Workstation Processor Cpu Radiator Heat Sink Cooling Fan Original - Pc Hardware Cables & Adapters - AliExpress
![1st upgrade I did to this (not stock) hp z400 I got from my dad's workplace: Added a GTX 980Ti : r/pcmasterrace 1st upgrade I did to this (not stock) hp z400 I got from my dad's workplace: Added a GTX 980Ti : r/pcmasterrace](https://i.redd.it/w3ujpftzgfea1.jpg)