Recently, users in international forums have reported an issue with the Apple MacBook Pro, which is powered by the M5 Max chip. Specifically, when the device is subjected to high-intensity tasks, such as large language model (LLM) inference, localized areas of the screen exhibit color distortion. This color abnormality is primarily observed above the area where the body's connector is located and is independent of the screen's opening angle. This observation eliminates the likelihood of panel damage resulting from hot air reflow (a phenomenon where heated air circulates back to the display), pointing instead to the possibility that heat generated by the internal chips is being transferred or radiated through the metal frame to the liquid crystal module. This, in turn, leads to thermal degradation of the display layer.
The current model of the MacBook Pro is equipped with only a single heat pipe and two slim fans, which proves to be insufficient for efficient heat dissipation during prolonged periods of high computational demand. Despite the M5 Max chip's utilization of a Fusion architecture—a design that integrates CPU and GPU cores to boost energy efficiency and minimize heat production—the chip's surface temperature can still surpass 100 degrees Celsius when subjected to extreme workloads.
Since this problem has been reported by a limited number of users and has not yet prompted an official technical inquiry from Apple, sources within the supply chain have revealed that the upcoming M6 MacBook Pro will undergo a complete overhaul of its thermal design. The current heat pipe system will be replaced with a vapor chamber (VC) structure, and there is a possibility of incorporating high-thermal-conductivity interface materials to enhance heat diffusion capabilities.
For users who have opted for the AppleCare+ service plan, the most straightforward and effective course of action is to request a full device replacement through official after-sales channels.
