Hi Kirui,

Below are the specs for the small factor CPU you needed :

(1/2)HP Compaq 6300 Pro SFF, Intel Core i3-2120 (3.3 GHz) Processor, 2048MB DDR3-1333 Memory, 500GB 7200RPM SATA-6G HDD, DVDRW..  ENERGY STAR, Windows 7 PRO 64-bit, 3/3/3 Warranty (NEW)

This is a new CPU and comes pre installed with windows 7..

It has 3 years warranty too..

Cost is 63,500.00

Call me on 0712 603 271..

Regards
Eric Kiruthi