27-inch iMac with Retina 5K display: 3.1GHz 6-core 10th-generation Intel Core i5 processor, 256GB

3.1GHz 6-core 10th-generation Intel Core i5 processor Turbo Boost up to 4.5GHz 8GB 2666MHz DDR4 memory, configurable up to 128GB 256GB SSD storage1 Radeon Pro 5300 with 4GB of GDDR6 memory Two Thunderbolt 3 ports Retina 5K 5120-by-2880 P3 display with True Tone (optional nano-texture glass available)