A-Tech 8GB KIT (4 x 2GB) for HP Compaq Elite 8100 Business PC (CMT,SFF) 8000 Convertible Minitower Small Form Factor 8100 8200 Microtower. DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory at Amazon.com
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OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq 8100 Elite (Convertible Minitower) (DDR3-10600 - Non-ECC) Desktop Memory at Amazon.com
Amazon.com: HP Compaq 8100 Elite Desktop PC Computer, Intel i5-650 3.2GHz, 8GB RAM, 1TB Hard Drive, Windows 10 Pro, DVD, 19-inch LCD, Wireless Keyboard & Mouse, 16GB Flash Drive, Mousepad, USB WiFi (