The G12 GC Series is available in the standard ATX form factor and in the most common power levels for a PC system. The Seasonic G12 GC Series complies with the 80 Plus Gold standard, offering 87%, 90% and 87% energy efficiency at 20%, 50% and 100% operating load respectively. This efficiency, combined with the active power factor correction, enables G12 GC power supplies to reduce energy waste, resulting in savings in energy costs for the users. In addition to being highly efficient, the G12 GC units use the design of the LLC resonance converter and the intelligent and silent fan control (S2FC).