Cooler Master RR-S4KK-25SN-R1
Cooler Master Hyper 212 Black CPU Air Cooler
Instruction Manual - Model: RR-S4KK-25SN-R1
1. Introduction
The Cooler Master Hyper 212 Black Edition is a high-performance CPU air cooler designed for optimal thermal management. Its sleek, jet-black aesthetic and robust construction ensure both premium looks and efficient heat dissipation. This manual provides comprehensive instructions for installation, operation, and maintenance of your Hyper 212 Black CPU Air Cooler.

Figure 1.1: Cooler Master Hyper 212 Black CPU Air Cooler
Key Features:
- Cool for R7 | i7: Four heat pipes and a copper base ensure optimal cooling performance for AMD R7 and *Intel i7.
- SickleFlow 120 Edge: Experience premium airflow and cooling with our optimized PWM blade curve fan.
- Dynamic PWM Fan: A PWM 4-pin header allows adjustable fan speeds from 690 to 2,500 RPM, to balance noise and airflow.
- Simplify Brackets: Redesigned brackets simplify installation on AM5 and LGA 1851|1700 platforms.
- Versatile Compatibility: 152mm tall design offers performance with wide chassis compatibility.
2. What's in the Box
Verify that all components are present before beginning installation:
- Hyper 212 Black CPU Cooler (Heatsink with pre-attached fan)
- Installation Kit (Mounting brackets, screws, backplate)
- CryoFuze Thermal Paste
Figure 2.1: Included Components
3. Specifications
| Feature | Detail |
|---|---|
| Brand | Cooler Master |
| Model Number | RR-S4KK-25SN-R1 |
| Product Dimensions | 4.84"L x 3.03"W x 6.25"H (125 x 74 x 152 mm) |
| Weight | 1.54 Pounds |
| Cooling Method | Air Cooling (Fan) |
| Heat Pipes | 4 Copper Heat Pipes |
| Fan Type | SickleFlow 120 Edge PWM Fan |
| Fan Speed | 690 - 2,500 RPM (Adjustable via PWM) |
| Airflow | 70.7 CFM |
| Air Pressure | 3.61 mmH2O |
| Noise Level | 26 dB (Max 32.8 dBA) |
| Power Connector | 4-Pin PWM |
| Voltage | 12 Volts |
| Wattage | 2.4 watts |
| Material | Aluminum, Copper |
| Compatible Sockets | AMD Ryzen AM5/AM4, Intel LGA 1851/1700/1200 |
4. Setup & Installation
Proper installation is crucial for optimal cooling performance. Please follow these steps carefully. Refer to your motherboard's manual for specific details on CPU and RAM installation if needed.
4.1 Prepare Your System
- Power off your computer and disconnect all cables.
- Open your PC case to access the motherboard.
- Remove any existing CPU cooler and clean off old thermal paste from the CPU and cooler base using isopropyl alcohol and a lint-free cloth.
4.2 Install Mounting Brackets
The Hyper 212 Black comes with redesigned brackets for easy installation on various platforms:
Figure 4.1: Mounting Brackets for AMD and Intel Sockets
- Identify the correct backplate and mounting arms for your CPU socket (AMD AM5/AM4 or Intel LGA 1851/1700/1200).
- Attach the backplate to the rear of your motherboard, aligning it with the CPU cooler mounting holes.
- Secure the appropriate mounting arms to the front of the motherboard using the provided screws, ensuring they are firmly attached.
4.3 Apply Thermal Paste
Apply a small amount of the included CryoFuze thermal paste to the center of your CPU's integrated heat spreader (IHS). A pea-sized dot is generally sufficient. The pressure from the cooler will spread it evenly.
Figure 4.2: Applying Thermal Paste
4.4 Mount the Cooler
- Carefully place the heatsink onto the CPU, aligning the mounting holes on the cooler's base with the standoffs on the mounting arms.
- Secure the heatsink by tightening the four spring-loaded screws in a diagonal pattern (e.g., top-left, bottom-right, top-right, bottom-left) until they are finger-tight, then use a screwdriver to tighten them evenly until snug. Do not overtighten.
- Attach the SickleFlow 120 Edge fan to the heatsink using the provided fan clips. Ensure the fan is oriented to blow air through the heatsink fins towards the rear of the case for optimal airflow.
- Connect the fan's 4-pin PWM cable to the CPU_FAN header on your motherboard.
4.5 Check Clearance
The 152mm tall design offers good compatibility, but always check for clearance with your RAM modules and PC case side panel.
Figure 4.3: Cooler Dimensions and RAM Clearance
5. Operating the Cooler
The Cooler Master Hyper 212 Black operates automatically via its PWM fan, which adjusts speed based on CPU temperature. No manual intervention is typically required for basic operation.
5.1 Fan Control
The SickleFlow 120 Edge fan utilizes a 4-pin PWM connection, allowing your motherboard to dynamically control its speed (690 to 2,500 RPM) to balance cooling performance and noise levels. You can typically adjust fan curves in your motherboard's BIOS/UEFI settings or through manufacturer-provided software.
Figure 5.1: Dynamic PWM Fan Operation
The fan is designed for quiet operation, with a maximum noise level of 26 dB (typical) to 32.8 dBA (max).
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your CPU cooler.
6.1 Cleaning the Heatsink and Fan
- Frequency: Clean every 3-6 months, or more frequently in dusty environments.
- Procedure:
- Power off your PC and disconnect it from the power source.
- Carefully remove the fan from the heatsink by unhooking the fan clips.
- Use compressed air to blow dust out of the heatsink fins. Hold the can upright to prevent propellant discharge.
- Wipe the fan blades and frame with a soft, dry cloth. For stubborn dust, a slightly damp cloth can be used, ensuring the fan is completely dry before reinstallation.
- Reattach the fan to the heatsink.
6.2 Thermal Paste Reapplication
Thermal paste typically lasts for several years. Reapply if you remove the cooler for any reason or if you notice a significant increase in CPU temperatures over time. Always clean off old paste completely before applying new.
7. Troubleshooting
If you encounter issues with your Cooler Master Hyper 212 Black, try the following solutions:
7.1 High CPU Temperatures
- Check Fan Connection: Ensure the fan's 4-pin PWM cable is securely connected to the CPU_FAN header on your motherboard.
- Verify Fan Operation: Confirm the fan is spinning when the PC is on. If not, check BIOS settings for fan control or test the fan on another header.
- Inspect Thermal Paste: Ensure thermal paste was applied correctly and is not dried out. Reapply if necessary.
- Check Mounting Pressure: Ensure the cooler is securely mounted and applying even pressure to the CPU. Tighten screws diagonally.
- Clean Dust: Excessive dust buildup on the heatsink fins can impede airflow. Clean the cooler as described in the Maintenance section.
- Case Airflow: Ensure your PC case has adequate airflow with properly configured intake and exhaust fans.
7.2 Excessive Fan Noise
- Check Fan Curve: Adjust the fan curve in your motherboard's BIOS/UEFI to a quieter profile if temperatures allow.
- Inspect for Obstructions: Ensure no cables or other components are touching the fan blades.
- Clean Fan: Dust buildup can cause imbalance and noise. Clean the fan blades.
- Fan Bearing Noise: If the fan makes a grinding or rattling noise, the bearing may be failing. Consider replacing the fan.
8. Warranty & Support
For warranty information and technical support, please refer to the official Cooler Master website or the documentation included with your product.
Additional resources:
- User Guide (PDF): Download User Guide
- User Manual (PDF): Download User Manual
Manufacturer: Cooler Master