POWER10 designates a proposed superscalar, multithreading, symmetric multiprocessor family, based on the open source Power ISA, and announced in August 2020 at the Hot Chips conference; systems with POWER10 CPUs are intended to reach customers in the fourth quarter of 2021. The processor is designed to have 15 cores available, but a spare core will be included during manufacture to cost-effectively allow for yield issues. POWER10-based processors will be manufactured by Samsung using a 7 nm process with 18 layers of metal and 18 billion transistors on a 602 mm2 silicon die.