Test Your PC's Stability

Martin Brinkmann
Jan 7, 2012
Updated • Apr 8, 2014

Testing a PCs stability makes sense in a number of situations. Maybe you have made the decision to overclock your PC and want to make sure that everything runs well and stable, or you are thinking of giving away your old PC to a friend or family member who is not the most knowledgeable person when it comes to computers. Making sure that the system runs fine can save you troubleshooting sessions later on.

It can also be useful if you notice that the system is not running stable, and you want to test changes that you are making to it to find out if they resolve those issues.

System Stability Tester is a free open source software for Windows, Linux and Mac systems that can stress test and benchmark a computer system. It does so by calculating up to 128 million digits of Pi which is extremely taxing for the processor.

When you first start the program you have the choice to run a benchmark or system stress test. A benchmark can be used to compare the results of a system to another system, the stress test to verify that there are no calculation errors.

You can also select the amount of Pi digits you want to compute, the turns, and the number of threads the computer should use for that task.

system stability tester

The stress testing application supports two pi computation algorithms: The Quadratic Convergence of Borwein and Gauss-Legendre with Borwein being selected by default.

Please note that you can only run a stress test if at least two threads are selected. The program then starts the calculation which can slow down the PC considerable during operation. Statistics are updated regularly that display the amount of calculated Pi digits, the state, and time it took to calculate them.

An overview at the top highlights the total amount of errors of the calculation as well as the processing time until the first error was detected.

You can optionally save a log file or a Pi file. The first saves basic information about the run, the second all Pi digits.

One of the core advantages of System Stability Tester is that it is available for Mac, Linux and Windows systems, which means that it can be used to compare the performance of computers running different operating systems.

Interested users can download System Stability Tester from the developer website over at Sourcerforge.

It needs to be noted that the stability test won't help you if a component that does not get taxed by the benchmark causes stability issues. If the video card for instance is the culprit, it won't make sense to use the program for that.


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  1. mikiaandy said on January 11, 2012 at 6:41 am

    the best soft for test after years , for me it s http://www.ocbase.com/perestroika_en/

  2. Roman ShaRP said on January 10, 2012 at 3:15 pm

    BTW, this program is included in Parted Magic bundle, handy Linux LiveCD-LiveUSB drive partitioning and system testing tool I used on many occasions .

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