The MacBook Pro "Core i7" 2.8 15-Inch (Dual Graphics/Force Touch -
Mid-2015 Retina Display) features a 22 nm "Haswell/Crystalwell" 2.8 GHz
Intel "Core i7" processor (4980HQ), with four independent processor
"cores" on a single silicon chip, a 6 MB shared level 3 cache, 16 GB of
onboard 1600 MHz DDR3L SDRAM (which cannot be upgraded later), 512 GB of
PCIe-based flash storage, and dual graphics processors -- an AMD Radeon
R9 M370X with 2 GB of dedicated GDDR5 memory and an integrated Intel
Iris 5200 Pro graphics processor with 128 MB of "Crystalwell" embedded
DRAM (and shared system memory). It also has an integrated 720p FaceTime
HD webcam and a high-resolution LED-backlit 15.4" widescreen 2880x1800
(220 ppi) "Retina" display in a case that weighs just less than 4.5
pounds (2.04 kg). It does not have an internal optical drive.
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