CPU-Z is a freeware that gathers information on some of the main devices of your system
- Processor name and number, codename, process, package, cache levels.
- Mainboard and chipset.
- Memory type, size, timings, and module specifications (SPD).
- Real time measurement of each cores internal frequency, memory frequency.
Prime95 is a stress-testing and benchmarking tool used to find Mersenne prime numbers. It's popular for testing CPU stability under heavy load, especially in overclocking.