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iPhone 17 Pro Max Sustained Performance Tested — Does the Vapor Chamber Cooling Actually Work?

Apple replaced titanium with aluminum and added a vapor cooling chamber in iPhone 17 Pro models to reduce overheating and sustain superior performance, according to tests.

Summary by Tom's Guide
iPhone 17 Pro Max has a bunch of new hardware to help sustain performance power over time. But how effective are the changes? Here's what our benchmarks say.

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With the arrival of the new iPhones at the hands of some of Apple's followers, it was noted that iPhone 17 Pro is up to 10 °C colder than its predecessor. This thermal image explains...

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The first tests of the iPhone 17 Pro, including that of Numerama, confirm Apple's assertions on the heating of the new iPhone. Smartphones can be warm or warm sometimes, but are much less prone to overheating than the 15 Pro and 16 Pro. Has Apple solved the problem of heating iPhones, than we do

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The iPhone 17 Pro has returned to use aluminium due to its superior thermal dissipation capacity against titanium. A thermal comparison showed that the iPhone 17 Pro remains remarkably cooler than its predecessors, with temperatures around 35 °C, compared to 43 °C on the iPhone 16 Pro. Although titanium offered lightness and resistance, its low thermal conductivity made it a heat trapper. The new aluminium chassis, along with a steam chamber, di…

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ieee.org broke the news on Wednesday, September 17, 2025.
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