MacBook Pro 15-inch
Touch Bar and Touch ID
Apple's High-End Configuration
2.9GHz quad-core Intel Core i7, Turbo Boost up to 3.9GHz, with 8MB shared L3 cache
In comparison to 2.8GHz in cheaper model 2.9GHz doesn't seem like a big deal but 8MB L3 cache compare to 6MB makes a difference.
512GB PCIe-based onboard SSD