Apple's Intel Mac Journey: From Project Marklar to Silicon

The Intel Mac era is drawing to a close as macOS 26 is released, with only a few Intel models remaining eligible for security updates until fall 2028. This marks the definitive end of an era that began with 'Project Marklar,' an engineer's side endeavor in June 2000. Apple's decision to move from PowerPC to Intel processors was driven by performance limitations and thermal challenges with the PowerPC chips.

The transition, publicly demonstrated in June 2005, allowed Apple to leverage Intel's rapidly advancing technology. This partnership yielded innovative products like the slim MacBook Air, made possible by specially designed Intel CPUs. For years, Intel's 'Tick-Tock' model fueled Mac innovation, with significant updates like Retina displays and aluminum designs.

However, by the mid-2010s, Intel's manufacturing advancements faltered, and its processors struggled to meet Apple's performance and efficiency demands. This mirrored the issues that had previously led Apple away from PowerPC. Concurrently, Apple's own custom silicon, starting with chips like the T1 and T2, signaled a growing need for in-house solutions.

By November 2020, with the introduction of the M1 chip and the first Apple Silicon Macs, Intel Macs were on borrowed time. Although the transition took longer than the move to Intel, Apple completed its shift to custom silicon by mid-2023, concluding a significant chapter in Mac history.