iMac 21 "(September 2013) Core i5 2.7 GHz - HDD 1 TB - 8 GB

The iMac "Core i5" 2.7 21.5-Inch Aluminum (Late 2013/Haswell) features a 22 nm "Haswell/Crystalwell" Quad Core 2.7 GHz Intel "Core i5" (4570R) processor with four independent processor cores on a single chip, a 4 MB shared level 3 cache, 8 GB of 1600 MHz DDR3 SDRAM (which is not intended to be upgraded after purchase), a 1 TB (5400 RPM) hard drive, and an "integrated" Intel Iris Pro 5200 graphics processor with 128 MB of "Crystalwell" embedded DRAM (and shared system memory). It also has a built-in "FaceTime HD" webcam and stereo speakers, but lacks an optical drive.