Samsung’s Galaxy Z Fold 8 Ultra uses graphite sheets rather than a vapor chamber, continuing the cooling design introduced on the Fold 7.
The switch appears tied to the phone’s ultra-thin build, replacing the vapor chamber Samsung had used in Fold models through the Galaxy Z Fold 6.
Testing cited in the report found the Fold 8 Ultra stayed relatively cool during demanding tasks such as gaming, despite lacking a vapor chamber.
The Snapdragon 8 Elite Gen 5 still throttles in long gaming sessions, but the report says that is typical for a high-end chip in a very thin flagship foldable.