Amazon.com: HP 8100 Business High Performance Tower Desktop Computer PC (Intel Core i7 860 2.80GHz up to 3.46GHz,8GB RAM DDR3,2TB HDD,DVD,WIFI,Win 10 Pro 64 Bit)(Renewed)(I7, 8GB 2TB) : Electronics
HP Compaq 8100 Elite CMT Intel Core i5-650 3.20GHz CPU 4GB RAM No HDD No OS | eBay
Refurbished: Refurbished HP Compaq 8100 Elite SFF Intel Core i7-860 2.8G / 8G DDR3 / 320G / DVD / Windows 7 Professional 64 Bit / 1 Year Warranty - Newegg.com