Touch Bar with integrated Touch ID sensor

2.9GHz dual-core Intel Core i5, Turbo Boost up to 3.3GHz, with 4MB shared L3 cache
Available in: 256GB & 512GB PCIe-based onboard SSD
8GB of 2133MHz LPDDR3 onboard memory
Intel Iris Graphics 550
Four Thunderbolt 3 (USB-C) ports
Full-size backlit keyboard
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth 4.2 wireless technology
Battery Up to 10 hours wireless web
macOS Sierra

2.0GHz dual-core Intel Core i5, Turbo Boost up to 3.1GHz, with 4MB shared L3 cache
256GB PCIe-based onboard SSD
8GB of 1866MHz LPDDR3 onboard memory
Intel Iris Graphics 540
Two Thunderbolt 3  (USB-C) ports
Full-size backlit keyboard
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth 4.2 wireless technology
Battery Up to 10 hours wireless web
macOS Sierra

Touch Bar with integrated Touch ID sensor

2.6GHz quad-core Intel Core i7, Turbo Boost up to 3.5GHz, with 6MB shared L3 cache
256GB PCIe-based onboard SSD
16GB of 2133MHz LPDDR3 onboard memory
Radeon Pro 450 with 2GB of GDDR5 memory and automatic graphics switching
Intel HD Graphics 530
Four Thunderbolt 3 (USB-C)
Full-size backlit keyboard
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth 4.2 wireless technology
Up to 10 hours wireless web
macOS Sierra

Touch Bar with integrated Touch ID sensor

2.7GHz quad-core Intel Core i7, Turbo Boost up to 3.6GHz, with 8MB shared L3 cache
512GB PCIe-based onboard SSD
16GB of 2133MHz LPDDR3 onboard memory
Radeon Pro 455 with 2GB of GDDR5 memory and automatic graphics switching
Intel HD Graphics 530
Four Thunderbolt 3 (USB-C)
Full-size backlit keyboard
802.11ac Wi-Fi wireless networking; IEEE 802.11a/b/g/n compatible
Bluetooth 4.2 wireless technology
Up to 10 hours wireless web
macOS Sierra