By default, the 27-inch iMac comes with 10th-generation Intel i5 and i7 chipsets. The base model comes with a Radeon Pro 500-series GPU, which significantly improves the previous generation's base ...

The Retina iMac can be further upgraded to a 4GHz quad-core Intel Core i7, 32GB of RAM a 3TB Fusion Drive or 1TB SSD and an AMD Radeon R9 ... Apple developed its own timing controller that has four ...

While the 27-inch model was much the same as it had been ... Intel's quad-core Ivy Bridge i5 CPUs were now standard across ...