Refurbished: HP Compaq 8100 ELITE SFF PC, Intel Core i5-650 @ 3.2GHz, 4GB RAM, 500GB HDD, Windows 7 Pro Desktop Computers - Newegg.com
CMS 8GB (2X4GB) DDR3 10600 1333MHZ Non ECC DIMM Memory Ram Upgrade Compatible with HP/Compaq® Compaq 8100 Elite Small Form Factor Business Pc - A69 at Amazon.com
HP Compaq 8100 Elite Tower PC Intel Pentium 2.80ghz 4gb RAM 250gb HDD for sale online | eBay
HP Compaq 8100 Elite Core i5-650 3.2GHz Win7 4GB 250GB SFF Desktop PC Computer | eBay