HP Z400 Workstation has revolutionary new architecture and power that will redefine multi-tasking, the HP Z400 Workstation helps accomplish more with every minute of time and every dollar of investment.

It will be supplied with your choice of either a fresh installation of Windows 7 Professional (64bit) or Windows 10 Professional (x64) Activated and ready to use. It comes with a genuine Windows 7 Professional COA (Certificate of Authenticity aka a license key)

All drivers and updates are installed, along with Adobe Reader, Flash Player, Java, VLC Player and Microsoft Security Essentials.

HP Z400 Tower Computer Workstation

Features:

• Processor: Intel® Xeon® Processor W3520 (8M Cache, 2.66 GHz, 4.80 GT/s Intel® QPI)
• Memory: 12GB DDR3 (Upgrade options Below) Graphics: NVIDIA Quadro FFX 1800 with 768MB GDDR3
• Hard Drive: 320GB 7200rpm Sata (Upgrade options Below)
• Optical Drive: CD/DVD Writer
• Audio: IDT High Definition
• Networking: Integrated Broadcom® 5761 Gigabit Ethernet LAN 10/100/1000
• Ports: 2x PS2, 8x USB 2.0, DVI-D, 2x Displayport, 1x I394, Ethernet (RJ45) Speakers Out, Line In / Mic
• 90 Days Hardware Warranty (RTB)

Upgrade Options: Upgrade to 24GB of Ram (add $200)  Upgrade to a 1TB (1000GB) HDD (add $80) Upgrade to a 2TB (2000GB) HDD (add $130) Upgrade to a 3TB (3000GB) HDD (add $180) Upgrade to a new Samsung 850 EVO SSD (120GB - add $140) (250GB - add $220) (500GB - add $400) Upgrade to a used Samsung 840 EVO SSD (250GB - add $160) (500GB - add $275)

Add-On Options:
Add a Wireless Keyboard and Mouse (add $40) Add a 22" Widescreen LCD Monitor, Keyboard and Mouse (add $120) Add WiFi / Wireless Capability (add $50)  Add USB 3.0 Capability (add $40)

More info available here: http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01709671

Feel free to ask any questions!