Quick Summary
The Thermalright Assassin X 90 SE ARGB is a CPU air cooler with a 92mm PWM fan and a stated height of 118mm. It is made for CPU cooling and includes ARGB lighting with motherboard synchronisation support.
The cooler is built around an aluminium heatsink with a direct touch process and a fine pure copper surface treatment. The fan is rated at 2200rpm ±10%, with 12V power, 4-pin connection, 32.77CFM maximum airflow and noise level at or below 23.85dB(A).
Who It Is Best For
This cooler suits buyers looking for a compact CPU air cooler with ARGB lighting and stated support for a wide range of Intel and AMD sockets. It also suits builds where memory clearance is a consideration, because the cooler uses a skewed memory avoidance design.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product name | Thermalright Assassin X 90 SE ARGB CPU Air Cooler. |
| Cooler dimensions | 94 x 77 x 118 mm. Check case clearance before ordering. |
| Fan size | 92 x 92 x 25 mm PWM fan. |
| Fan speed | 2200rpm ±10%. |
| Power and connection | 12V, 4-pin fan connection. |
| Airflow | 32.77CFM maximum airflow. |
| Noise level | 23.85dB(A) or below. |
| Lighting | ARGB with 5V 3-pin motherboard synchronisation and support for light effect series connection. |
| Heat sink material | Aluminium, with direct touch process and pure copper surface treatment. |
| Compatibility | Intel LGA1150, 1151, 1155, 1156, 1200, 1700, 1851 and AMD AM4, AM5. |
| Design feature | Skewed memory avoidance design for clearance around RAM. |
Why Buyers Choose It
- The 118mm height gives a clear case-fit check for compact builds.
- The 92mm PWM fan provides a defined speed range and connection type for matching with the system setup.
- ARGB synchronisation support lets the lighting follow the motherboard connection it uses.
- The skewed memory avoidance design is useful where RAM clearance matters.
How It Works
- Fit the cooler using the mounting plate or fasteners matched to the supported socket.
- Follow the installation instructions or tutorial for the platform you are using.
- Connect the fan through the 4-pin PWM power port.
- If using lighting, connect the ARGB lead to the motherboard’s 5V 3-pin header for synchronisation.
- Use the supported light effect series connection if you need to link lighting effects.
What To Know Before You Buy
Check your socket type against the listed Intel and AMD compatibility before ordering. Review your case clearance, especially the stated 118mm cooler height, and make sure the 92mm fan size suits your build. If you want ARGB synchronisation, confirm that your motherboard has a 5V 3-pin header. The skewed memory avoidance design may also matter if your RAM height is tight.
Common Buyer Questions
Which sockets does it support?
It is listed for Intel LGA1150, 1151, 1155, 1156, 1200, 1700 and 1851, plus AMD AM4 and AM5.
What power connection does the fan use?
The fan uses a 4-pin connection and is rated at 12V.
How tall is the cooler?
The cooler is stated at 118mm high, so case clearance should be checked before fitting.
Does it include ARGB synchronisation?
Yes, the fan ARGB is synchronised with a 5V 3-pin motherboard connection.
Final Buying View
If you need a compact CPU air cooler with ARGB lighting, defined fan specifications and wide socket support, this model is easy to assess against your build. Confirm your socket, case clearance and ARGB header before choosing it.





