With the launch of the Galaxy S26 series, Samsung revealed significant enhancements to the vapor chamber across all three of its latest models. These refinements enhance performance while directly countering Apple’s inaugural smartphone featuring a vapor chamber, the iPhone 17 Pro. Although determining which company possesses the superior vapor chamber cooling system is challenging due to both employing the same physical principles, their thermal architectures vary to optimize each device’s efficiency.
In comparison to the Galaxy S25 series, Samsung claims that the vapor chambers in the Galaxy S26 and S26+ models are approximately 29% more effective at heat dissipation. Furthermore, the vapor chamber in the Galaxy S26 Ultra is reported to be 21% more efficient than that of its 2025 variant. While teardown videos suggest that the vapor chambers themselves seem larger, size is not the sole distinction. Some enhancements in heat dissipation can be credited to the specialized thermal interface material (TIM) now located along the processor’s edges — akin to the thermal paste one might apply between a CPU and its heat sink in a computer.
With these advancements, Samsung asserts that its new models excel in typical use cases such as video recording, gaming, or multitasking. At the core of this upgrade is the new Snapdragon 8 Elite Gen 5 for Galaxy, which delivers 19% improved CPU performance, a 24% increase in GPU performance, and a 39% boost in NPU capabilities for Galaxy AI features. Users should notice these enhancements due to the updated thermal design — meaning that the cooling system is designed to sustain performance during intensive tasks and prevent rapid battery depletion.
Samsung emphasizes that the Galaxy S26 series is tailored for high-demand usage.
Samsung promotes the Galaxy S26 Ultra as an ideal device for “high-demand sessions,” while also mentioning that the Galaxy S26 and S26+ are “optimized for extended gaming.” Thanks to the upgraded cooling system, users should enjoy smooth gameplay for hours on titles such as Fortnite or Genshin Impact, and can effectively utilize Galaxy AI for routine tasks like Live Translate, Circle to Search, Generative Edit for photos, or Note assist.
The company also asserts that Vulkan-optimized games can render light and shadows more effectively, and ray tracing enhances the gaming experience with support from the vapor chamber and the custom Snapdragon 8 Elite Gen 5 for Galaxy. Benchmark scores support this in many situations, often placing the Galaxy S26 Ultra ahead of the iPhone 17 Pro Max. While real-world usage might yield varied outcomes based on user actions, it is evident that Samsung concentrated on providing sustainable performance in this generation. Notably, the Korean manufacturer also provides customizable RAM options, as the 1 TB models can feature up to 16 GB of memory instead of the standard 12 GB, influencing performance as well.
Apple introduces vapor chamber technology to the iPhone.
While Samsung refined the vapor chamber experience familiar to Galaxy users, Apple finally advanced its cooling system with the iPhone. After two iterations of iPhone models utilizing titanium frames, which were less effective at heat management, Apple opted to return to aluminum while incorporating a custom-engineered vapor chamber for its Pro series. The company states that it encases deionized water within the vapor chamber, which, combined with the aluminum base, aids in directing heat away from the A19 Pro chip. Similar to Samsung’s approach, Apple aims to keep the chip operating cool by dissipating heat throughout the device.
Mirroring the Galaxy S26 series, Apple achieved remarkable improvements in its latest chip thanks to the vapor chamber. The company claims that this internal redesign provides up to 40% enhanced sustained performance, and it also highlights advantages in gaming, video editing, and improved AI functionalities — all complemented by a larger battery that extends the iPhone 17 Pro Max’s lifespan compared to all prior models. In summary, whether customers select the Galaxy S26 Ultra or the iPhone 17 Pro Max, they can anticipate some of the finest sustained performance presently available on the market.