A day after the company revealed two high-end MacBook Pro notebooks powered by its next-generation silicon chip, Apple shares were up 0.4 percent in premarket trading on Tuesday.

The laptops are powered by Apple's new M1 Pro and M1 Max processors, which are said to be 70 percent quicker and more efficient than the company's previous M1 chip.

Premarket, Intel, which has long viewed Apple as one of its most important customers, was marginally lower. Apple has extended the gap between itself and Intel by including its own CPUs in high-end laptops.

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According to Apple, the graphics performance of the M1 Max is four times quicker than the M1 processor, while the M1 Pro's is twice as fast. It's also a lot quicker than the previous version.

According to Apple, the M1 Max's graphics performance is four times that of the M1 chip, while the M1 Pro's is twice as fast. It's also a lot faster than Intel's previous CPUs.

For the past decade, Apple has been creating its own CPUs for its gadgets, an operation that has allowed it to include those chips in a wider range of models and devices.

AirPods 3, Apple's entry-level wireless earbuds, are based on the company's higher-end AirPods Pro series.