1. Introduktion
This manual provides detailed instructions for the installation, operation, and maintenance of your Thermalright Assassin X 120 R SE CPU Air Cooler. This high-performance air cooler is designed to efficiently dissipate heat from your CPU, ensuring stable and optimal system performance. It features 4 heat pipes and a TL-C12C PWM quiet fan with an S-FDB bearing, offering effective cooling with low noise levels. The cooler is compatible with various Intel and AMD platforms.
2. Sikkerhedsoplysninger
Please read and understand all safety instructions before installation and use. Failure to do so may result in damage to the product or other components.
- Sørg for, at dit computersystem er slukket og taget stikket ud af stikkontakten, før du starter installationen.
- Håndter komponenterne forsigtigt for at undgå skader.
- Keep thermal paste away from skin and eyes. In case of contact, rinse thoroughly with water.
- Forsøg ikke at modificere køleren eller dens komponenter.
- If you are unsure about any step, consult a qualified technician or refer to online resources.
3. Pakkens indhold
Bekræft, at alle nedenstående varer er til stede i din pakke:
- Thermalright Assassin X 120 R SE Heatsink
- TL-C12C PWM Fan (120mm)
- Intel Mounting Kit (LGA1700/115X/1200)
- AMD monteringssæt (AM4/AM5)
- Fan klip
- Termisk forbindelse
- Installationsvejledning (dette dokument)

4. Opsætning og installation
The installation process involves mounting the heatsink and fan onto your CPU. Ensure you have the correct mounting hardware for your CPU socket type (Intel LGA1700/115X/1200 or AMD AM4/AM5).
4.1. Installationsvideoguide
For a visual guide, please refer to the official installation video below. While the video title mentions an ARGB series cooler, the core installation steps for the heatsink and fan are identical for the Assassin X 120 R SE model.
4.2. Step-by-Step Installation (Intel LGA1700 Exampdet)
Follow these steps for installing the cooler on an Intel LGA1700 motherboard. Steps for other sockets will be similar, using the appropriate mounting hardware.
- Forbered bundkort: Place the Intel 1700 backplate on the backside of your motherboard, aligning it with the CPU socket holes.
- Installer standoffs: From the front side of the motherboard, install the four Intel 1700 plastic standoffs into the backplate.
- Fastgør monteringsbeslag: Secure the two metal mounting brackets onto the plastic standoffs using the provided Intel screws. Ensure the brackets are oriented correctly according to the LGA1700 mounting holes. Tighten them evenly.
- Påfør termisk forbindelse: Apply a small amount of thermal compound (thermal paste) to the center of your CPU's Integrated Heat Spreader (IHS). Use the included spreader or a similar tool to spread it into a thin, even layer across the entire surface.
- Position Heatsink: Remove the protective plastic sticker from the heatsink base. Carefully place the heatsink onto the CPU, aligning the mounting nuts on the heatsink with the screws on the metal brackets.
- Secure Heatsink: Using a screwdriver, alternately tighten the nuts on both sides of the heatsink until it is firmly secured. Do not overtighten.
- Install Fan Clips: Attach the fan clips to the TL-C12C PWM fan.
- Monter ventilator: Using the fan clips, attach the fan to the heatsink. Ensure the fan is oriented to blow air through the heatsink fins towards the rear or top of your computer case.
- Tilslut ventilatorkabel: Connect the fan's 4-pin PWM cable to the CPU_FAN header on your motherboard.
- Connect Lighting Cable (if applicable): If your fan or cooler has RGB lighting (this model does not feature RGB), connect the lighting signal cable to the appropriate +5V ARGB 3PIN lighting socket on your motherboard.



5. Betjening
Once installed, the Thermalright Assassin X 120 R SE CPU Air Cooler operates automatically. The TL-C12C PWM fan's speed is controlled by your motherboard based on CPU temperature, ensuring optimal cooling performance while minimizing noise.
- Ensure the fan cable is securely connected to the CPU_FAN header.
- Monitor CPU temperatures using system monitoring software to confirm proper cooling.
- Adjust fan curves in your motherboard's BIOS/UEFI settings if you wish to customize fan behavior (e.g., for quieter operation or maximum cooling).
6. Vedligeholdelse
Regelmæssig vedligeholdelse er med til at sikre din CPU-kølers levetid og optimale ydeevne.
- Støvrensning: Rengør kølepladens finner og ventilatorblade regelmæssigt for støv med trykluft eller en blød børste. Sørg for, at ventilatoren ikke drejer under rengøringen.
- Termisk pasta: The thermal compound typically lasts for several years. If you notice a significant increase in CPU temperatures, consider reapplying fresh thermal paste. This involves carefully removing the heatsink, cleaning off old thermal paste from both the CPU and heatsink base, and applying new thermal paste.
- Ventilator inspektion: Check the fan for any signs of wear or unusual noise. The S-FDB bearing is designed for long service life, but extreme conditions can affect it.
7. Fejlfinding
Hvis du støder på problemer med din CPU-køler, kan du se følgende almindelige problemer og løsninger:
- Ventilatoren drejer ikke:
- Check if the fan's 4-pin PWM cable is securely connected to the CPU_FAN header on the motherboard.
- Kontroller blæserindstillingerne i dit bundkorts BIOS/UEFI.
- Sørg for, at ventilatoren ikke er blokeret af kabler eller andre komponenter.
- Høje CPU-temperaturer:
- Confirm the heatsink is securely mounted and making good contact with the CPU.
- Check if thermal paste was applied correctly and evenly. Reapply if necessary.
- Sørg for tilstrækkelig luftgennemstrømning i computerens kabinet.
- Clean any dust accumulation on the heatsink fins and fan blades.
- Overdreven støj:
- Check for loose fan clips or vibrations.
- Juster blæserhastighedsindstillingerne i dit bundkorts BIOS/UEFI for at få en mere støjsvag professionel computer.file.
- Sørg for, at ingen kabler rører ventilatorbladene.
8. Specifikationer
Detailed technical specifications for the Thermalright Assassin X 120 R SE CPU Air Cooler:
| Feature | Specifikation |
|---|---|
| CPU Cooler Dimensions | 125(L) x 71(W) x 148(H) mm (4.92 x 2.8 x 5.83 inch) |
| Produktets vægt | 0.645 kg (1.42 lb) |
| Materiale til køleplade | Aluminum fins, Pure Copper Heat Pipes and Base, Nickel Plated |
| Varmerør | 4 x 6mm (AGHP technique) |
| Fan model | TL-C12C |
| Fan Dimensioner | 120 x 120 x 25 mm (4.72 x 4.72 x 0.98 tommer) |
| Blæserhastighed (RPM) | 1550 RPM ±10 % |
| Luftstrøm | 66.17 CFM (MAX) |
| Støjniveau | ≤25.6 dB(A) |
| Strømstik | 4-Pin PWM |
| Voltage | 12V DC |
| Ventilatorleje | S-FDB-leje |
| Kompatibilitet | Intel: LGA115X/1200/1700/17XX, AMD: AM4/AM5 |

9. Garanti og support
Thermalright products come with a manufacturer's warranty. For specific warranty terms, duration, and to register your product, please visit the official Thermalright website or contact your local retailer. For technical support, troubleshooting assistance beyond this manual, or inquiries about replacement parts, please contact Thermalright customer service through their official channels.
Officiel Webwebsted: www.thermalright.com





