Apple says its updated MacBook Pro, relying on 8th- and 9th-generation Intel Core processors, is the fastest MacBook it ever made. These new 15-inch MacBook Pro computers are powered by six-core and octa-core processors. The entry level gets a 2.6GHz, 6-core i7 processor, with Turbo Boost speeds of up to 4.5GHz. The faster model gets a 2.3GHz, 8-core i9 processor with Turbo Boost speed up to 4.8GHz. The top of the line model can be configured with a 2.4GHz 8-core i9 chip that boosts up to 5.0GHz.