The MacBook Pro "Core i7" 2.3 15-Inch (Dual Graphics - Late 2013 Retina Display) is powered by a 22 nm "Haswell/Crystalwell" 2.3 GHz Intel "Core i7" processor (4850HQ). It has four independent cores on a single chip, a 6 MB shared L3 cache, 16 GB of non-upgradable onboard 1600 MHz DDR3L SDRAM, and 512 GB of PCIe-based flash storage. This model features dual graphics processors: a NVIDIA GeForce GT 750M with 2 GB of dedicated GDDR5 memory and an integrated Intel Iris 5200 Pro with 128 MB of "Crystalwell" embedded DRAM, which also shares system memory. It includes an integrated 720p FaceTime HD webcam and a high-resolution 15.4-inch LED-backlit widescreen 2880x1800 (220 ppi) "Retina" display, all in a chassis weighing just under 4.5 pounds (2.02 kg). It does not have an internal optical drive.
Connectivity consists of 802.11ac Wi-Fi, Bluetooth 4.0, two USB 3.0 ports, two "Thunderbolt 2" ports, an HDMI port, an audio in/out port, and an SDXC card slot. Additionally, this model has a backlit keyboard, a "no button" glass "inertial" multi-touch trackpad, a "MagSafe 2" power adapter, and a sealed internal battery providing an estimated 8 hours of life. Compared to its predecessor, this model has a nearly identical external enclosure but features a more efficient processor and architecture, which improves battery life, as well as faster storage, Wi-Fi, and connectivity.