Amazon.com: HP Elite 8300 Small Form Factor Desktop Computer PC (Intel Quad Core i5-3570 3.4GHz Processor, 16GB RAM, 2TB HDD, WiFi, USB 3.0) Windows 10 Professional (Renewed) : Electronics
HP Desktop Computer Elite 8300 Intel Core i5 3rd Gen 3570 (3.40 GHz) 16 GB DDR3 and WIFI
Amazon.com: HP 8300 Elite Small Form Factor Desktop Computer (Intel Core i5- 3570 3.4GHz Quad-Core, 8GB RAM, 2TB SATA,Windows 10 Pro 64-Bit) (Renewed) : Electronics
When you really want to game... but the HP motherboard uses some sort of custom 6pin power connector, not the standard 24pin atx plug, so you could only use a gpu that
HP Compaq Elite 8300 SFF Desktop Intel Core i5-3570 3.40GHz 16GB No HDD
NeweggBusiness - HP Compaq Desktop PC Elite 8300 (B9C43AW#ABA) Intel Core i5 3570 (3.40GHz) 4GB DDR3 500GB HDD Intel HD Graphics 2500 Windows 7 Professional 64-Bit
Refurbished: HP Compaq Elite 8300 SFF Desktop Intel 3rd Gen. Quad Core i5- 3570 3.40 GHz 8 GB DDR3 RAM 1 TB HD DVD-RW WiFi Bluetooth USB 3.0 Microsoft Windows 8 Pro Desktop Computers - Newegg.com
Mainboard 795970-002 795970-602 795206-002 For Hp Elite 800 G2 Sff Desktop Motherboard Lga 1151 Ddr4 Q170 100% Working Well - Laptop Motherboard - AliExpress