CPU Stress Test 1.0

One click testing for Intel & Apple Silicon CPUs

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CPU Stress Test requires macOS 10.12 or newer on Intel, and macOS 11.0 on Apple Silicon.

CPU Stress Tests solves the problem of having a way to test the thermal limits or battery life of a Mac. Instead of opening up Terminal, typing in cryptic commands, or trying to find outdated apps to test the CPU, it's as simple as choosing the number of threads to run and clicking start. It will keep the CPU busy from a low percentage or all the way to 100% for as long as it's needed.

Want 50% CPU usage? Choose half the number of threads compared to cores and click run. It's easy to customize from between 1-64 threads.

There's no cost for CPU Stress Test. No purchase, no in-app purchase and no ads. We wanted to make a simple to use utility that was useful to the Mac community at large, for everyone to use.

It's compatible with both Intel and Apple Silicon architectures so it's ready for all current and future Mac models.


Every CPU Architecture

It's built for the future. CPU Stress Test is a Universal App 2, so it includes native versions for both Intel and Apple Silicon (ARM) processors. Since it runs natively, it's able to push the CPU usage all the way to 100% with one click.

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No More Terminal Commands

Before CPU Stress Test, in order to stress the processor, it was necessary to open multiple terminal windows, usually to pipe the yes command to /dev/null. Opening one window per core is a thing in the past. Now, just click run and it does the rest.

Test Battery Life

Get specific benchmark data on how long a battery in a Mac laptop will last when the CPU is running at 100%. With the handy timer, it's easy to see exactly how long it's been running. There's no easier way to get consistent testing than with CPU Stress Test.

This is also saved into a CSV file when the logging feature is enabled.

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Temperatures & Fan Control

Pair with TG Pro to find out how macOS handles the maximum CPU usage by monitoring temperatures of individual components, as well as fan speeds and even increase them if necessary.


Continous Logging

Keep track of how long the test was running using the built-in continuous logging feature. It writes the date, time, total CPU usage and elapse test time into a CSV file.

This can be very useful when it's necessary to know how long the test has run for, or monitoring the CPU usage over time.

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    Apple Silicon - CPU Idle

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    Apple Silicon - CPU 100%

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    CSV Log File

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