In 2020,
Apple's M1 chip was introduced in November 2020 and has proven to be very powerful, though only for Apple's entry-level Macs: the 24-inch iMac, MacBook Air, Mac mini, and two 13-inch MacBook Pro models. The M1's successor is not the expected M1X, but the M1 Pro and M1 Max.
Then in March 2022, Apple went a step further with the M1 Ultra, which combined two M1 Max chips with twice the amount of CPU, GPU, and unified memory
The m1, the first self-developed chip that Apple has withdrawn, was released on November 11, 2020.