Evaluating Why Processor Development Transitioned from Gigahertz Increases to Multicore

The research about processor development was made to analyze the reasons of transition from increasing clock speed (gigahertz) to multi-threaded architecture. Main goal is to find out how the technological limits which is related to energy consumption, heat dispersion and CMOS upscaling principles, affected the CPU progression model.Key results: Assumed, that the yearly average productivity rate in single threaded mode was 11.2 percent, and in multi-threaded it was 25.2 percent. The performance parity between multi core and single core processors increased from 2.1 multiplication in 2007 to 19.6 multiplication in 2025. The major technological reasons are being limited in 3.8-4.0 gigahertz clock speed, exponential rise in power consumption, and the impossibility of further size reduction made multi core technology the only was forward for scaling.Conclusions: The trend towards multi thread processors is due to the fundamental limitations of silicon technology. The trend towards multi thread processors is due to the fundamental limitations of silicon technology. Multi-threaded processors give a significant improvement in computing capacity while keeping energy consumption in a reasonable level and accepting the requirements of modern applications. This tendency is predicted to continue into the 2030s.