Hp z820 workstation with 2 physical processors (intel xeon e5-2660 2.20GHz) for exceptional performance with 24GB installed Ram which is upgradable to 256gb, 5 hard disk bays and 2 dvd bays which can be substituted for hard disk to carry a total of 8 hard disks. This cpu has 1125 watts power supply for heavy duty performance with dedicated 18 pins graphics card power connector. Able to power any graphics card that exist. Note: I'm selling this cpu to a person intrested in building a powerful gaming pc or server... So the cpu comes WITHOUT any hard disks or graphics card. But for purposes of testing the machine will be connected to hdd and graphics card at presentation. You must have both your own hdd and graphics card before hand or a budget. Graphics card is mandatory! Hp z820 is designed without onboard monitor output.