Original story: A late-2014 display hooked to an early 2012 GPU The GPU powering the 27-inch iMac with Retina 5K display is the R9 M290X, with the R9 M295X offered as an optional upgrade.

The design remains the same, but you get a new processor and a more generous RAM offering without a price increase. Sadly, Apple is still miserly with the iMac's storage.

Amazon is slashing prices on all Apple computers for Black Friday, including the latest iMac with the M4 chip.

and a Core i7 processor that delivers excellent performance when stacked up against the Retina 5K iMac. Unlike the recently-released 13-inch MacBook Pro, there's no generational upgrade to the CPU.