M4 MacBook Air: Missing the Thermal Upgrade Boat in 2025

In the past year, Apple has focused on improving thermal performance in its devices with significant upgrades for the M4 iPad Pro and iPhone 16 series. The M4 iPad Pro introduced graphite sheets and a copper heat spreader within the logo, enhancing heat dissipation by 20%. The iPhone 16 lineup featured a reengineered design to better manage heat and battery service. Despite these advancements, the M4 MacBook Air, one of Apple's thinnest and lightest laptops, did not receive any notable thermal improvements. This is disappointing, as the 2022 redesign of the MacBook Air with a thinner graphite sheet instead of a metal heatsink led to quicker thermal throttling compared to its predecessor. The absence of thermal upgrades in the M4 MacBook Air limits sustained performance for users who might need it most. While this may not affect typical users, it suggests that those requiring top-tier performance should consider the MacBook Pro with M4 Pro or M4 Max.