As demand for processing power has grown – driven by data-intensive applications, such as AI, cloud computing, machine learning and big data – so too has power consumption and heat generation in data centers. Because all of the power used by data center computers is derived from AC utility lines and processed by system power supplies, the density and efficiency of the power system, including the front end that transforms the AC line voltage into the DC voltages required for powering electronic circuitry, is of paramount importance. Increased power system efficiency and density translate into reduced losses, reduced cooling requirements, improved space utilization and greater economy. The new Vicor RFM was designed specifically to address these issues.