CPU and GPU throttling is an old concept for PC users but relatively new for mobile platforms, including Android and iOS devices. With CPU and GPU throttling tests for your smartphone, you can estimate how much stress or workload your device can handle. Here is how you can do it on your own in a safe environment.
Let me first explain what CPU or GPU throttling is. When your phone’s CPU is constantly under a load due to heavy tasks like games, it starts to heat. This heat makes the CPU work slower because of resistance. This slowing down of performance is called Throttling. The same applies to GPU.
Although some CPUs or GPUs tend to slow down the performance intensionally in order to reduce high temperatures and avoid damaging the parts physically. This throttling effect can also help to reduce battery consumption as the device uses less power and stays cooler. Moreover, it can help to increase the life span of the device.
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How to Test Smartphone CPU and GPU Throttling
The throttle test is not similar to benchmarking. Benchmarking allows you to conduct various tests on your CPU or GPU to check how well it can perform on those tests. But throttle testing conducts one test for a long time, making the CPU throttle. When the temperature rises, the performance should drop. So this tool allows us to measure the drop in performance due to throttling of the CPU.
And how do we prevent this throttling? My Motorola G31 throttles without the temperature rising! The test starts in the green, and gets gradually to red over the first minute. Yet the temperature of the CPU only changes from 31C to 33C.