HP Z600 WorkStation $400  
"Super Quiet Machine , Doesn't Make Any Noise"
can be used as Computer , WorkStation or Server
AutoCAD , vmWare LAB , Cisco LAB
Video Editing , Audio Editing 
2 X Intel Xeon Quad Core 2.80Ghz
2 Physical Processors Intel X5560
MAX Turbo Speed 3.20Ghz 
each Processor with 4 Cores and 8 Threads 
Altogether 8 Cores and 16 Threads , 16 Logical Cores
6.40Gt/s Dual QPI Links
8MB L3 Smart Cache
​Processor Specs: https://ark.intel.com/products/37109/
Support Virtualization Technology
VT-x , Hyper V , VT , VTX Compatible
Support vmWare , vSphere , Hypervisor
Support EPT Extended Page Tables
Support vmWare ESXi 6.0
Support Windows Server 2012 R2
Support XP , Win7 , Win8 and Windows 10
Support Linux , Ubuntu and many other OS
Support 32Bit and 64 Bit Operating System
24Gb DDR3 RAM
6 X 4Gb DDR3 Registered ECC Dimms installed
DVD ROM Drive
500Gb 7.2K SATA Hard Drive
Embedded Raid Controller
Support SW Raid0 and Raid1
PCI Express 512Mb Video Card 
Resolution upto 2048 x 1536
Gigabit Network Port 10/100/1000
Integrated High Def Audio
8 X USB Ports
Windows 7 Professional 64 Bit installed 
Windows License Key COA is included 
upon request we can install Server 2012 R2 Trial Version
or vmWare Esxi 6.0 Trial Version
fully tested and working off-Leased unit 
6 Months Hardware Replacement Warranty
You can test this Machine when buying