Cold water hack cools iPhone 18 Pro 25% better performance
Thermal throttling—that frustrating slowdown where a powerful processor decides to take a cooling break—is a persistent headache for mobile enthusiasts. While high-end desktop components often come equipped with elaborate liquid cooling systems, most mainstream smartphones seem to settle for managing heat internally. But what happens when you try to cheat the system with everyday items?
Tech enthusiast and developer Matt Birchler recently put this theory to the test with the latest Apple iPhone 18 Pro. Instead of resorting to expensive, bulky external coolers, Birchler opted for something far more accessible: a can of La Croix sparkling water.
The experiment was designed to see if providing a simple external chill could alleviate the performance bottlenecks. Birchler ran a rigorous benchmarking session on the phone’s A20 Pro processor, tracking its performance under prolonged load. When the phone ran in its standard configuration, it showed typical thermal throttling, slowing down significantly as it tried to prevent damage to the internal components.
The results were surprisingly compelling. By placing an ice-cold can of sparkling water on the back of the device, Birchler discovered that the cooling effect provided a tangible boost. Even though the initial benchmark run was slightly lower, the “liquid-cooled” iPhone 18 Pro managed to sustain nearly 25% higher performance during the tests. This demonstrated that even a simple external thermal intervention can make a noticeable difference.
This finding highlights a crucial point: while powerful mobile chips are getting faster, most standard phones are not designed with the robust cooling infrastructure needed to sustain peak performance during heavy tasks like gaming or video editing. If you frequently push your device to its limits, you might notice performance dips and dim screens after a short while.
For those seeking to unlock that hidden performance, the community has explored various creative solutions. Accessories like the Black Shark Magnetic Phone Cooler 6 Pro, the SmallRig Universal Hyper Chill Cooling Phone Cage, and the Tilta Khronos Advanced Kit offer dedicated physical solutions. However, some tinkerers have taken the route of custom engineering, strapping bespoke solutions—like a monstrous SSD cooling solution, to squeeze even more power out of their devices.
Ultimately, whether you opt for a can of soda or a complex external rig, the goal remains the same: harnessing the full potential of your hardware. The trend is clearly moving toward external and custom thermal management, allowing users to bypass the built-in limitations and keep their mobile technology running at its absolute peak.
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