Prime95 stress test your cpu prime95 is a freeware program originally designed to find new mersenne prime numbers. given the nature of prime95 it is now widely used as a cpu stress testing utility to gauge the stability of a cpu, especially when overclocking a system. it includes a torture test designed specifically how to stress cpu windows to test pc subsystems for. 3. stress-ng. linux users can depend on this reliable tool to perform the same load tests on their favorite distribution. the cpu-specific stress tests include floating point, integer, bit manipulation and control flow. for debian, a stress-ng installation command goes like:. 3. stress-ng. linux users can depend on this reliable tool to perform the same load tests on their favorite distribution. the cpu-specific stress tests include floating point, integer, bit manipulation and control flow. for debian, a stress-ng installation command goes like:. Best software to perform cpu stress test of a pc 1. stress test of cpu with...