This is an emulation layer that translates instructions for Intel processors into the commands that are used by Apple Silicon processors, and vice-versa. However, many apps written for Intel-based Macs can also run on Apple Silicon Macs, by using Apple’s Rosetta 2 software. Not only the operating system, but also applications for Apple Silicon Macs need to use a different instruction set from the versions designed for Intel-based Macs. The operating system looks and works exactly the same on both types of Mac, with one minor exception, explained below. In practice, many users will not notice the difference. Consequently, macOS 11, also known as Big Sur, was adapted so that it would work on both Intel-based Macs and the new Apple Silicon models. This is because they use a different instruction set from Intel-based Macs.

The change in processor architecture meant that Apple’s current operating system, macOS 11, had to be modified to work with the new Apple Silicon CPUs. M1 processors and the macOS operating system It also means that users will not be irritated by fan noise whilst working. This leads to further advantages without the need for a fan, it is easier to make very thin and light laptops such as the MacBook Air. A knock-on effect of this is that the new M1 processors do not get so hot in use. This not only makes them more environmentally friendly, but also means that Mac laptops will provide better battery life for the same performance. Secondly, they are more energy efficient. However, the new M1 processors bring a number of technical improvements as well.įirstly, they are faster than comparably-priced Intel processors.

The change from Intel processors is believed to be partly so that Apple had complete control of their entire manufacturing process. It is expected to be the first in a whole new range of such CPUs, collectively known as Apple Silicon. In late 2020, Apple started selling laptop, desktop and all-in-one Mac computers with a new type of ARM-based processor, called the M1.

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