About this item The impeller of the S12038-4K is held in a brass housing by two ball bearings, which makes it particularly durable and resistant to external influences such as heat and dust. The S12038-4K has a wide speed range that can be regulated via PWM and voltage. With a static pressure of 11,45 mmH2O and a maximum airflow of 180 m³/h, the S12038-4K is a true all-rounder and is suitable for use on heatsinks, as a radiator fan or as a rack fan. The S12038-4K fits into 4U server housings and serves as an upgrade or replacement for a CPU fan, radiator fan or for system ventilation. The fan has a standard 4-pin connector and can also be connected and controlled on 2-pin and 3-pin headers, while the 30 cm cable allows flexibility in positioning. The S12038-4K guarantees comprehensive protection: overvoltage, reverse polarity and overcurrent protection save the device from damage and contribute significantly to its longevity and reliability. Product Description New Standards in Energy Efficiency With the same performance, the S12038-4K server fan consumes 12% less than the next best competitor, improving the energy efficiency of your server. The reduction in power consumption is the result of months of motor optimization by ARCTIC engineers with the goal of increasing the efficiency of IT equipment. *Test setup: Fan on Freezer 4U heatsink on 400 W heating element; fan speed set so that the temperature of the heating element is constantly 20 °C above the ambient temperature. Wide Speed Range (600 to 4000 rpm) The S12038-4K has a wide speed range from 600 to 4000 rpm, which can be controlled via both PWM and voltage regulation. This wide range enables precise adjustment of the fan to the specific requirements of the server, ensuring efficient cooling performance under different operating conditions. The fan is equipped with a standard 4-pin connector, which also allows connection to 2-pin or 3-pin headers. The 30 cm long cable offers additional flexibility when positioning the fan. Active Cooling for Longer Motor Service Life A 10 °C lower motor temperature roughly doubles the service life. The motor of the S12038-4K is not only particularly efficient, but is also actively cooled by an additional impeller in the fan hub. The scope of delivery includes a sticker for the motor hub, which ensures a long service life even in dusty environments. Ideal for Server Environments Especially in server environments, fans with a high pressure are required to enable sufficient air circulation in the often tightly packed enclosures. The S12038-4K fits into server enclosures from 3U/3U and is used as an upgrade or replacement for a CPU fan, radiator fan or for system ventilation. High Airflow and Static Pressure Heatsinks and radiators benefit from fans with high static pressure. The S12038-4K has a static pressure of 11.45 mmH₂O, which enables it to push air through even narrow cooling fins. At the same time, it achieves a maximum airflow of 180 m³/h and can therefore quickly dissipate heat from enclosures. These properties make it the ideal choice for a wide range of applications. Designed for Continuous Operation The impeller of the S12038-4K is held by two high-quality Japanese ball bearings in a sturdy brass housing. This design increases longevity and minimizes sensitivity to influences such as heat and dust. In addition, the brass housing contributes significantly to reducing wear on high-speed fans. Technical Data Power Output Speed: 600-4000 rpm PWM-controlled Air flow: 106 cfm | 180 m³/h Static pressure: 11.45 mmH₂O Fan Connection: 4-pin socket Fan bearing: Double ball bearing with brass housing Operating ambient temperature: -10~70 °C Electrical Characteristics Starting voltage: 3.1 V DC Current | voltage: 0.33 A | 12.0 V DC Current (maximum): 0.60 A Size & Weight Length: 120 mm Width: 120 mm Height: 38 mm Weight: 320 g ARCTIC S12038-4K (3 Pack) ARCTIC S12038-8K (3 Pack) ARCTIC S8038-7K (4 Pieces) – Fan, 80x80x38 mm, 500-7000 RPM, PWM Regulated, 4… ARCTIC S8038-10K (4 Pieces) – Fan, 80x80x38 mm, 500-10000 RPM, PWM Regulated,… ARCTIC S4028-6K (5 Pack) – 40x40x28 mm Fan, 250-6000 RPM, PWM Regulated, 4-pi… ARCTIC S4028-15K (5 Pack) – 40x40x28 mm Fan, 1400-15000 RPM, PWM Regulated, 4… Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Buying Options Customer Reviews 5.0 out of 5 stars 3 3.7 out of 5 stars 7 4.0 out of 5 stars 5 4.4 out of 5 stars 9 4.6 out of 5 stars 64 4.6 out of 5 stars 64 Price $34.99 $34 . 99 $39.99 $39 . 99 $41.99 $41 . 99 $44.99 $44 . 99 — — Fan Speed 600-4000 rpm 800–8000 rpm 500–7000 rpm 500–10000 rpm 250–6000 rpm 1400–15000 rpm Airflow 106 cfm | 180 m³/h 220 cfm | 370 m³/h 70 cfm | 118.93 m³/h 102 cfm | 173.30 m³/h 7.1 cfm | 12.06 m³/h 19.23 cfm | 32.67 m³/h Speed Control Pulse width modulation – PWM Pulse width modulation – PWM Pulse width modulation – PWM Pulse width modulation – PWM Pulse width modulation – PWM Pulse width modulation – PWM Static Pressure 11.45 mmH₂O 37 mmH₂O 25 mmH₂O 51 mmH₂O 4.2 mmH₂O 26.5 mmH₂O Connection 4-pin fan connection 4-pin fan connection 4-pin fan connection 4-pin fan connection 4-pin fan connection 4-pin fan connection Fan Bearing Dual ball bearing Dual ball bearing Dual ball bearing Dual ball bearing Dual ball bearing Dual ball bearing Size 120 x 120 x 38 mm 120 x 120 x 38 mm 80 x 80 x 38 mm 80 x 80 x 38 mm 40 x 40 x 28 mm 40 x 40 x 28 mm Weight 320 g 328 g 146 g 151 g 40 g 42 g
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