The Arctic Liquid Freezer II 420 A-RGB is a multi-compatible all-in-one water cooler with RGB lighting. The Liquid Freezer II combines the efficient PWM pump of the Liquid Freezer II with RGB fans optimised for static pressure. This achieves a completely different aesthetic with extremely low noise and equally low temperatures. The water pump's hum has been reduced and its efficiency increased. Like the other components, it is also PWM-controlled. This results in a much lower noise level at low and typical loads, but also much lower power consumption. Unlike most other all-in-one liquid cooling manufacturers, Arctic uses 38 mm thick radiators with a high fin density. This allows a larger amount of water to be used in the circuit and significantly increases the cooling surface. The Liquid Freezer II's fibre-reinforced, long EPDM tubing enables installation even in large cases and effectively prevents the cooling liquid from evaporating, so you don't have to worry about refilling the compact water cooling system.