- The Samsung Galaxy ZFold 8 Ultra does not have a vapor chamber for cooling, continuing the company's tactic since the Z Fold 7.
- The South Korean company prefers graphite sheets instead of a liquid cooling system in order to keep the thickness of the foldable to a minimum.
- The thermal behavior of the Snapdragon processor remains controlled even in demanding Gaming, despite the obvious thermal throttling in heavy benchmarks.
H Samsung diligently avoided mentioning a crucial technical feature during the presentation of its new foldable. For those of you looking into the innards of the device, it's worth learning how the top foldable handles heat.
The absence of the vapor chamber
Official press releases and glitzy keynote events tend to focus on the screens and cameras, leaving the fine print to cool things down. According to market analyses and Android Central technical data, the Galaxy Z Fold 8 Ultra does not have a vapor chamber. This absence is strange, considering we are talking about a flagship device that costs a fortune.
The company used vapor chambers in its older foldables, like the Galaxy Z Fold 6, but changed course with the next generation. If you were expecting the top-of-the-line “Ultra” model to return to traditional liquid cooling systems, reality is flat out wrong.
Graphite instead of liquid: Samsung's strategy
The move from vapor chamber to thin graphite sheets was made purely for form factor reasons. A liquid cooling system adds thickness and weight, which are prohibitive for a foldable that is trying to compete with traditional smartphones in terms of thinness. You can read more about the technological developments in networks and devices in our recent article on the new trends in mobile.
The challenge for Samsung engineers was to prevent hotspots on the device's body without sacrificing ergonomics. Graphite disperses heat evenly across the chassis' surface, but it lags significantly behind in quickly removing thermal loads compared to a vapor chamber.
Thermal behavior in gaming
In practice, the lack of liquid cooling doesn't necessarily translate into a daily overheating nightmare. In demanding usage scenarios and long gaming sessions, the device maintains acceptable temperatures on its outer casing, without burning your hands.
Of course, the powerful Snapdragon processor will inevitably activate thermal throttling to protect its circuitry. The drop in performance after 30 minutes of continuous load is expected in such thin bodies, which is confirmed by the relevant GSMarena benchmarks for modern chips.
Our opinion at TechNoid
We at TechNoid find it unacceptable that a device with the “Ultra” label and corresponding price tag makes such compromises on cooling. Manufacturers’ obsession with millimeters of thickness leads to devices that guzzle energy as soon as you push them a little too hard. If you spend a small fortune on the top foldable on the market, you deserve the best possible hardware everywhere — not just in the displays.
Samsung Galaxy Z Fold 8 Ultra Cooling FAQ
Does the Samsung Galaxy Z Fold 8 Ultra have a vapor chamber?
No, Samsung does not use a vapor chamber in this model, continuing to use graphite sheets.
Why did Samsung remove the vapor chamber from its newest foldables?
The change was made to keep the device as thin and light as possible.
Does the Galaxy Z Fold 8 Ultra heat up easily in daily use?
No, the temperature remains at extremely controlled levels in simple tasks and social media.
Is there any performance drop (throttling) in gaming?
Yes, the processor slightly drops its performance in long and heavy games due to passive cooling.
Which Samsung models had vapor chambers in the past?
The liquid cooling system was present in all foldable models up to the Galaxy Z Fold 6.
Are graphite sheets effective for cooling?
They are sufficient for general use and heat dissipation, but they lag significantly behind liquid against extreme loads.
Is the device's durability affected by the lack of liquid cooling?
No, the processor has built-in safety features and throttling to prevent permanent damage.
