Arctic’s Freezer i32 Plus boasts two fans which begin spinning only above a 40 percent PWM duty cycle, allowing for passive cooling under light load. Cooling specialist Arctic has announced the Freezer i32 Plus, a dual-fan tower cooler for all recent Intel socket types which it claims can run entirely passively under low loads.
Built on the same general principles as its previous Freezer models, Arctic’s Freezer i32 Plus doesn’t look particularly exciting at first glance: a centre stack of 84 0.3mm-thick aluminium fins sheds the heat from five 6mm copper heat pipes, with airflow provided by a pair of 120mm pulse-width modulation (PWM) controlled fans in a push-pull configuration.
A glance through the specifications, though, reveals a key feature of the cooler: The fans run at a maximum speed of 1,350 revolutions per minute (RPM) dropping to zero RPM under light loads down to a 40 percent PWM duty cycle, meaning that, when coupled with a processor boasting a low enough thermal design profile (TDP) and a case with decent airflow, the heatsink can run entirely silently and passively when you’re not caning the CPU.
