Koolance CHC-122 Water Block (Motherboard Chipset) The CHC-122 has improved heat transfer over the earlier CHC-120. It is designed to provide high efficiency liquid cooling for motherboard northbridge chipsets. Versatile mounting hardware allows the CHC-122 to cool almost all types of mainboards, or heat sources up to approximately 175W. Materials include a solid high-density copper cold plate, brass top, and anti-corrosive nickel plating. G 1/4 BSPP fitting threading.