Description
Display 
Retina display
15.4-inch (diagonal) LED-backlit display with IPS technology; 2880-by-1800 native resolution at 220 pixels per inch with support for millions of colors
Processor
2.2GHz
2.2GHz 6-core Intel Core i7, Turbo Boost up to 4.1GHz, with 9MB shared L3 cache
Configurable to 2.9GHz 6-core Intel Core i9, Turbo Boost up to 4.8GHz, with 12MB shared L3 cache
2.6GHz
2.6GHz 6-core Intel Core i7, Turbo Boost up to 4.3GHz, with 9MB shared L3 cache
Configurable to 2.9GHz 6-core Intel Core i9, Turbo Boost up to 4.8GHz, with 12MB shared L3 cache
Storage1
256GB
256GB SSD
Configurable to 512GB, 1TB, 2TB, or 4TB SSD
512GB
512GB SSD
Configurable to 1TB, 2TB, or 4TB SSD
Memory
16GB of 2400MHz DDR4 onboard memory
Configurable to 32GB of memory
Graphics
2.2GHz
Radeon Pro 555X with 4GB of GDDR5 memory and automatic graphics switching
Intel UHD Graphics 630
Configurable to Radeon Pro 560X with 4GB of GDDR5 memory
2.6GHz
Radeon Pro 560X with 4GB of GDDR5 memory and automatic graphics switching
Intel UHD Graphics 630
Configurable to Radeon Pro Vega 16 with 4GB of HBM2 memory or Radeon Pro Vega 20 with 4GB of HBM2 memory