The MacBook "Core M" 1.1 12-Inch (Early 2015) features a 14-nm 1.1 GHz Intel "Core M" processor (M-5Y31) with two independent processor "cores" on a single chip, a 4 MB level 3 cache, an "integrated" Intel HD Graphics 5300 graphics processor that shares system memory, 8 GB of onboard 1600 MHz LPDDR3 SDRAM (that cannot be upgraded), and 256 GB of onboard PCIe-based flash storage