The MacBook "Core m5" 1.2 12-Inch (Early 2016) features a 14-nm 1.2 GHz Intel "Core m5" Skylake processor (M5-6Y54) with two independent processor "cores" on a single chip, a 4 MB level 3 cache, an "integrated" Intel HD Graphics 515 graphics processor that shares system memory, 8 GB of onboard 1866 MHz LPDDR3 SDRAM (that cannot be upgraded), and 512 GB of onboard PCIe 3.0-based flash storage.
This all is housed in a wafer thin (0.14-0.52 inch), 2.03 pound, aluminum case offered in Silver, a darker "Space Gray," Gold, and a pink-tinted "Rose Gold" color options. It also packs a lowly 480p FaceTime webcam, a backlit full-size keyboard with a thin "butterfly mechanism" keyboard design, a clever haptic-capable "Force Touch" trackpad, and a beautiful 12" TFT LED-backlit active-matrix "Retina" display (2304x1440 native resolution at 226 ppi).
This system fully supports the last version of OS X 10.11 "El Capitan," macOS Sierra (10.12), and macOS High Sierra (10.13). Running macOS High Sierra (10.13) or later, this model does support HEVC hardware acceleration.
This model is compatible with the final version of macOS Mojave (10.14), macOS Catalina (10.15), and macOS Big Sur (macOS 11), as well. It additionally supports the final version of macOS Monterey (macOS 12), but it does not support AirPlay to Mac and the more minor Spatial Audio, Portrait Mode, 3D Landmarks, and Interactive Globe features. When paired with a compatible iPad, it supports the Sidecar feature. It does not support macOS Ventura (macOS 13) or later.