Cooler Master RR-S4KK-20PA-R1 Hyper 212 Halo CPU Cooler

The Cooler Master Hyper 212 Halo (RR-S4KK-20PA-R1) is a single-tower CPU air cooler that builds on the long-standing reputation of the Hyper 212 series with a modernized jet-black finish and updated mounting hardware. At its core are four copper heat pipes that make direct contact with the CPU integrated heat spreader, efficiently transferring heat up through a stack of black-coated aluminum fins. The included 120mm MF120 Halo² fan operates between 690 and 1,800 RPM via a PWM 4-pin header, pushing up to 51.88 CFM of airflow while keeping noise at a manageable 27 dB maximum — a balance well-suited to everyday gaming and productivity workloads on AMD Ryzen 7 and Intel Core i7 class processors.

Visually, the standout feature is the dual-loop ARGB ring design on the fan, which is 50% larger than previous Halo iterations and connects to a standard 3-pin ARGB motherboard header for software-synchronized lighting. Redesigned mounting brackets streamline installation on AMD AM5/AM4 and Intel LGA 1851/1700/1200 sockets, reducing the fiddly hardware that made earlier Hyper 212 versions tedious to install. At 154mm tall and weighing 1.52 pounds, the cooler fits comfortably within most mid-tower cases while leaving adequate clearance for tall memory modules in many configurations.