apple 15in macbook pro, retina, touch bar, 2.9ghz intel core i7 quad core, 16gb ram, 512gb ssd, space gray, mptt2ll/a (renewed) apple the macbook pro "core i7" 2.9 15-inch (mid-2017 retina display, touch bar, four thunderbolt 3 ports) is powered by a 14 nm, 7th generation "kaby lake" 2.9 ghz intel "core i7" processor (7820hq), with four independent processor "cores" on a single silicon chip, an 8 mb shared level 3 cache, 16 gb of onboard 2133 mhz lpddr3 sdram and 512 gb of onboard flash storage (ram cannot be upgraded at the time of purchase, but the flash storage could), and dual graphics processors -- an amd radeon pro 560 with 4 gb of dedicated gddr5 memory and an integrated intel hd graphics 630 graphics processor that shares memory with the system. externally, this notebook has an integrated 720p facetime hd webcam, a thin, backlit "second generation" butterfly mechanism keyboard with an integrated "touch bar" touch-sensitive control that adapts for different applications and provides touch id login support in lieu of traditional function keys, and a gigantic "force touch" trackpad. additionally, it has a high-resolution led-backlit 15.4" widescreen 2880x1800 (220 ppi, 500 nits) "retina" display, and a integrated battery that provides an apple estimated 10 hours of runtime. this notebook is offered in either silver colored aluminum or a darker "space gray" colored aluminum housing (but not other colors) and weighs just a bit more than 4 pounds (1.83 kg). connectivity includes 802.11ac wi-fi, bluetooth 4.2, four "thunderbolt 3" ports (usb-c connector), and a 3.5 mm headphone jack.