At first sight, the Kotetsu might seem like a "mini Ashura" - a fact which visually can hardly be denied. When looking at the fundamental concept, however, the two similar looking coolers couldn't be more different. The Kotetsu was tailored for the PC user on tighter budget in that It has four heatpipes, for fresh air a 120mm GlideStream PWM is equipped - for the heat dissipation level of the new Haswell processors this combination is more than efficient and cooling performance will not disappoint. Despite being a budget-priced cooler, the Kotetsu is fitted with the latest H.P.M.S. (Hyper Precision Mounting System), and makes use of the "Narrow Fin" design.
The new Kotetsu also draws on the highly proven M.A.P.S. already having shown excellent results with the Mugen 3. Thanks to the optimized arrangement of the fins, pass-through airflow inside the heatsink is designed for the ultimate cooling performance.
Newly Developed Mounting System
Another new feature can be seen is the Kotetsu's new mounting system. Based on the over-the-years experience of CPU cooler mounting systems and Scythe expertise, the Kotetsu mounting was designed with the keywords "simplicity" and "reliability" in mind.
GlideStream 120 PWM
The included new Glide Stream 120 PWM fan with its unique blade design is automatically controlled by the motherboard's PWM function, the fan speed is adjusted in accordance to the CPU temperature.
Socket LGA775 , Socket LGA1150 , Socket LGA1155 , Socket LGA1156 , Socket LGA1366 , Socket LGA2011 (Square ILM)
Socket AM2 , Socket AM2+ , Socket AM3 , Socket AM3+ , Socket FM1 , Socket FM2 , Socket FM2+
130 x 58 x 160 mm / 5.12 x 2.28 x 6.3 in (WxDXH)
480 g / 16.93 oz (Heatsink only)
Scope of Delivery
Mounting plate x2 (Intel), mounting plate x2 (AMD), mounting bar x1, screws for clips x4, mainboard screws x8, mounting screws x2, back plate spacer (Socket 775) x1, washers x4, wrench x1, fan clips x2, thermal grease, backplate, installation manual
Fan Model Name
GlideStream 120 PWM
Fan Model Number
120 x 120 x 25 mm / 4.72 x 4.72 x 0.98 mm
400 rpm (±200) ~ 1400 rpm (±10%)
Fan Noise Level
5.3 ~ 28.0 dBA
Fan Air Flow
20.7 ~ 79 CFM
1.18 ~ 15.3 Pa / 0.12 ~ 1.56 mmH²O
Voltage / Current
DC 12V / 0.09A