The water cooling plate, also known as a liquid cooling plate, is a component of a water-cooled heat sink. It is an efficient, low-noise, compact, and highly expandable part that exchanges heat through liquid cooling. A water cooling plate typically consists of a metal base plate and an integrated water cooling system. The metal base plate effectively conducts heat, while the water cooling system absorbs and carries away heat through the flowing water.

Water cooling plates provide superior heat dissipation and are primarily used in high-performance computers and workstations. These devices often require intensive computing and processing power, which in turn necessitate better cooling to ensure their stability.