Three prototypes of Apple’s iMac 27-inch spotted

According to MacRumors reports, forum member Amethyst said as early as March this year that Apple will make at least three iMac models using Apple Silicon chips in 2021. Amethyst previously revealed exact details about the Mac Studio, including the computer name, as well as the configuration parameters of the two M1 Max chips and the 20-core CPU and 48-core GPU. Amethyst also shared precise details about Studio Display.

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According to Amethyst’s text, the three iMac prototypes that Apple has made are as follows:

• The first: Until August 2021, with the same design as the discontinued 2020 Intel-based iMac 27-inch, with the M1 chip
• The second: Around August 2021, with the same design as the iMac 24-inch, but with a 27-inch display and M1 chip
• Third: Around November 2021, with the same design as the iMac 24-inch, but with a 27-inch XDR display, black finish, and M1 Max chip

It’s unclear if Apple has also made a larger iMac prototype device. The most interesting prototype to describe is the iMac 27-inch, which has the same design as the iMac 24-inch Color Edition, but with a sleeker black finish and an XDR display, which could mean a 1,000,000:1 contrast ratio and high brightness.

Apple discontinued the Intel-based iMac Pro and iMac 27-inch models in 2021, and the iMac 24-inch with the M1 chip becomes Apple’s only all-in-one desktop computer. Bloomberg’s Mark Gurman and analyst Ming-Chi Kuo have both claimed that larger iMacs powered by Apple’s Apple Silicon chips could make a comeback as early as 2023, but details about the computer’s design and chip options aren’t entirely clear.

Earlier this month, Amethyst shared details about an alleged pre-production Mac Pro motherboard that includes an Apple Silicon chip with a 40-core CPU (32 performance cores, 8 efficiency cores) and a 128-core GPU, said to be The prototype Mac Pro motherboard also includes at least one PCIe x16 slot.

Back in May 2021, Bloomberg’s Mark Gurman reported on Mac Pros powered by Apple Silicon chips, with the same core count, so the board might work on older Mac Pro prototypes based on M1-series chips, but probably won’t be. Officially released. Gurman recently said that Apple’s new Mac Pro will be equipped with M2 Ultra and “M2 Extreme” chips, but did not disclose the specific core count of these chips.