Processor: It houses a 9th Generation 14-nm Coffee Lake 3.7 GHz Intel “Core i5” processor (I5-9600K) with six independent processor cores on a single chip. Memory: Equipped with 16 GB of easy-to-upgrade 2666 MHz DDR4 SDRAM. Storage: Comes with a 2 TB Fusion Drive, combining the speed of flash storage with the capacity of a traditional hard drive. Graphics: Features a Radeon Pro 580X graphics processor with 8 GB of dedicated GDDR5 video memory. This product is eligible for a replacement or refund within 90 days of receipt if you are not satisfied. The iMac "Core i5" 3.7 27-Inch Aluminum (Retina 5K, 2019/Coffee Lake) features a "9th Generation" 14-nm "Coffee Lake" 3.7 GHz Intel "Core i5" processor (I5-9600K) with six independent processor "cores" on a single chip, a shared 9 MB level 3 cache MHz 16 DDR4SDRAM, a 2 TB Fusion Drive