Access : Freely available items Publicly available ... https://www.itu.int/rec/T-REC-L.1318-202208-I/en Summary Q factor: A fundamental metric expressing integrated circuit energy efficiency Recommendation ITU-T L.1318 outlines a method and fundamental metric for expressing integrated circuit energy efficiency, the Q factor. The Q factor could be applied to measure and improve the integrated circuit technology behind information and communication technology itself. The method consists of two separate parts: 1. Method and metric development; 2. Examples of Q factor scores for different integrated circuits and energy and carbon saving potentials in relation to Q factors.