(refurbished) apple imac 21.5in 2.7ghz core i5 (me086ll/a) all in one desktop, 8gb memory, 1tb hard drive, mac os x mountain lion apple 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, a 1tb 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. this model has a 21.5" 1920x1080 led-backlit 16:9 widescreen ips display with the "cover glass fully laminated to the lcd and anti-reflective coating." the rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges. connectivity includes four usb 3.0 ports, dual thunderbolt ports, gigabit ethernet, 802.11ac wi-fi (802.11a/b/g/n compatible), and bluetooth 4.0. compared to its predecessor, this model essentially has the same external enclosure, but it has a much more efficient "fourth generation" processor and architecture, as well as faster graphics, faster wi-fi, and the option of faster storage. the "late 2013" imac models shipped with a compact aluminum apple wireless keyboard and the choice of either a multi-touch "magic mouse," a multi-touch "magic trackpad," or a traditional wired apple mouse.