The iMac "Core i5" 2.3 21.5-Inch Aluminum (Mid-2017/Kaby Lake) features a 14-nm "Kaby Lake" 2.3 GHz Intel "Core i5" processor (7360U) with two independent processor "cores" on a single chip, a 4 MB shared level 3 cache, 8 GB of 2133 MHz DDR4 SDRAM that is reportedly onboard -- but actually can be upgraded later -- a 1 TB (5400 RPM) hard drive, and an "integrated" Intel Iris Plus Graphics 640 graphics processor that shares system memory. It also has a built-in "FaceTime HD" webcam and stereo speakers.