iUniker Active Cooler for Raspberry Pi 5 vs Thermalright Assassin X120 Refined SE CPU Air
Updated July 2026 — Thermalright Assassin X120 Refined SE CPU Air leads on price and size.
The iUniker Active Cooler offers excellent value for Raspberry Pi users with its quiet operation and efficient cooling. The Thermalright Assassin X120 is better suited for high-performance setups.
Why iUniker Active Cooler for Raspberry Pi 5 is better
Price
iUniker is $9.99 compared to Thermalright's $17.90
Noise Level
iUniker operates below 18 dB
Installation
iUniker is easier to install with pre-applied thermal tape
Why Thermalright Assassin X120 Refined SE CPU Air is better
Cooling Efficiency
Thermalright has advanced cooling with 4 heat pipes
Build Quality
Thermalright uses industrial-grade materials
Compatibility
Thermalright supports multiple CPU sockets
Overall score
Specifications
| Spec | iUniker Active Cooler for Raspberry Pi 5 | Thermalright Assassin X120 Refined SE CPU Air |
|---|---|---|
| Fan Type | PWM | PWM |
| Material | Aluminum | Aluminum + PBT |
| Heat Pipes | 0 | 4 |
| Compatibility | Raspberry Pi 5 | Intel/AMD |
| Installation | Easy | Moderate |
Dimension comparison
Price Comparison
The iUniker Active Cooler for Raspberry Pi 5 is priced at $9.99, while the Thermalright Assassin X120 Refined SE CPU Air Cooler costs $17.90. This makes the iUniker cooler about 44% cheaper than the Thermalright option. For those seeking budget-friendly cooling solutions for their Raspberry Pi, the iUniker offers a significant saving without compromising on essential cooling features. On the other hand, the Thermalright cooler, while more expensive, may appeal to users requiring robust cooling for higher-performance CPUs in general computing or gaming setups.
Target Audience
The iUniker Active Cooler targets Raspberry Pi 5 users specifically, making it an ideal choice for hobbyists and developers working with this popular single-board computer. Its features, such as PWM speed control and ultra-quiet operation, cater to users focused on maintaining a low-noise environment while performing tasks like AI or video processing. In contrast, the Thermalright Assassin X120 is designed for a broader audience, supporting multiple CPU sockets from both Intel and AMD platforms. This versatility makes it suitable for various computing needs, including gaming, workstation tasks, and general use.
Cooling Efficiency
The iUniker Active Cooler boasts superior heat dissipation, keeping CPU temperatures under 56°C even under stress, outperforming passive coolers by 20-30°C. This impressive performance is largely due to its aluminum heatsink and pre-applied thermal tape. The Thermalright Assassin X120 also employs advanced cooling techniques, featuring four heat pipes and a PWM fan that can deliver airflow of up to 66.17 CFM. Although the exact temperature performance is not specified, the combination of these features suggests it is well-equipped for high-performance cooling tasks.
Noise Levels
In terms of noise levels, the iUniker cooler operates at whisper-quiet levels, below 18 dB, which is ideal for environments where silence is paramount. This quiet operation is particularly beneficial for Raspberry Pi projects that may be used in home theaters or quiet workspaces. Conversely, the Thermalright Assassin X120 has a maximum noise level of 25.6 dB, which, while still relatively quiet, can be noticeable in silent environments. Users who prioritize minimal noise might lean towards the iUniker model for its ultra-quiet performance.
Installation Process
Installation of the iUniker Active Cooler is straightforward, as it comes with pre-applied thermal tape and screws, allowing users to set it up in just minutes. This ease of installation is appealing for beginners or those who may not have extensive technical knowledge. The Thermalright Assassin X120, while also designed for efficiency, is more complex due to its compatibility with multiple CPU sockets and the need for specific mounting hardware. This may require more time or expertise for proper installation, potentially making it less appealing for novice users.
Material and Build Quality
The iUniker cooler features an aluminum heatsink, which provides excellent thermal conductivity while remaining lightweight. This design is specifically suited for the Raspberry Pi 5, ensuring efficient cooling without adding significant bulk. On the other hand, the Thermalright Assassin X120 incorporates a more robust build with industrial-grade materials, including aluminum and high-quality PBT + PC materials. This construction not only enhances durability but also ensures that the cooler can withstand higher performance demands, making it suitable for a wide range of applications beyond just basic cooling.
Brand Reputation
iUniker, while newer in the market, has established a name for itself by focusing on specific cooling solutions for devices like the Raspberry Pi. Their specialization may appeal to dedicated Raspberry Pi users looking for tailored products. Conversely, Thermalright has over 20 years of experience in the field of computer accessories, earning a solid reputation among enthusiasts and professionals alike. Their long-standing presence and focus on research and development suggest reliability and performance, especially for users seeking high-end cooling solutions.
Which should you buy?
Ultimately, the choice between the iUniker Active Cooler for Raspberry Pi 5 and the Thermalright Assassin X120 Refined SE CPU Air Cooler depends on your specific needs. If you are a Raspberry Pi user looking for an affordable, ultra-quiet solution that excels in efficient cooling, the iUniker cooler is the clear winner at $9.99. However, if you are seeking a versatile, high-performance cooler suitable for a range of CPUs and are willing to invest $17.90, the Thermalright Assassin X120 offers robust features and excellent build quality. Consider your primary usage, budget, and noise tolerance to make the best decision for your setup.

