Scythe Japan has officially launched the Kotetsu Mark 4 (model SCKTT-4000), the latest iteration of its well-regarded entry-level air cooler. This new model is designed as a successor to the Kotetsu Mark 3, retaining the signature single-tower form factor but featuring notable performance enhancements, most significantly the inclusion of the new Wonder Tornado 120 mm PWM fan.
The Kotetsu Mark 4 incorporates four 6 mm nickel-plated heatpipes, maintaining the thermal transfer capabilities of its predecessor. Physically, the Mark 4 is slightly more compact than the Mark 3, with dimensions of 134×155×80 mm compared to the previous 138×154×80 mm, and weighs 771 g, including the fan. The cooler also presents a refined aesthetic, featuring a redesigned top cover for a cleaner, more premium appearance. Details about the Kotetsu Mark 4 were reported by ITHome (via TechPowerUP).
The selection of the new fan is central to the performance improvements. Replacing the Kaze Flex II from the previous generation, the Wonder Tornado 120 mm fan operates within a speed range of 350 (±200) RPM to 2000 RPM. This configuration provides a rated airflow of up to 60.29 CFM and a static pressure range of 0.05 to 2.45 mmH₂O. These specifications ensure the cooler is capable of handling modern mainstream processors, even in compact mid-tower cases, with noise levels maintained between 3.0 dBA and 28.88 dBA.
Scythe has ensured extensive compatibility for the new unit, offering support for AMD’s AM4 and AM5 platforms, as well as Intel’s LGA 1851, 1700, 1200, and 115X sockets. The cooler is currently available in Japan for ¥3,480 (approximately £17).
The Kotetsu Mark 4 presents a viable cooling solution for those assembling an entry-level system who desire an upgrade over a typical stock cooler.
