iUniker Active Cooler for Raspberry Pi 5 vs Thermalright Assassin King 120 SE White ARGB CPU
Updated August 2026 — Thermalright Assassin King 120 SE White ARGB CPU leads on airflow and height.
The iUniker Active Cooler is ideal for Raspberry Pi users seeking quiet and affordable cooling, while the Thermalright Assassin King excels in performance and aesthetics for high-end CPUs.
Why iUniker Active Cooler for Raspberry Pi 5 is better
Price
iUniker is significantly cheaper at $9.99.
Noise Level
iUniker operates below 18 dB.
Ease of Installation
iUniker has pre-applied thermal tape for easy setup.
Why Thermalright Assassin King 120 SE White ARGB CPU is better
Performance
Thermalright achieves higher airflow at 66.17 CFM.
Compatibility
Thermalright supports multiple CPU sockets.
Build Quality
Thermalright features a robust design with five heat pipes.
Overall score
Specifications
| Spec | iUniker Active Cooler for Raspberry Pi 5 | Thermalright Assassin King 120 SE White ARGB CPU |
|---|---|---|
| Max Noise | 18 dB | 25.6 dB |
| Max Temp | 56°C | N/A |
| Fan Type | PWM | PWM |
| Socket Support | Raspberry Pi 5 | Intel/AMD |
| Price | $9.99 | $19.82 |
Dimension comparison
Overview of CPU Coolers
When it comes to CPU coolers, the iUniker Active Cooler for Raspberry Pi 5 and the Thermalright Assassin King 120 SE White ARGB serve distinct purposes in the realm of cooling solutions. The iUniker cooler is specifically designed for the Raspberry Pi 5, while the Thermalright cooler targets high-performance CPUs across multiple platforms. This fundamental difference sets the stage for how each cooler performs in their respective environments.
Design and Build Quality
The iUniker Active Cooler features an aluminum heatsink, designed to provide efficient heat dissipation while maintaining a lightweight profile. This cooler integrates a PWM fan that operates quietly at levels below 18 dB. In contrast, the Thermalright Assassin King boasts a robust design with five heat pipes and a white ARGB aesthetic, making it not only functional but visually appealing in a gaming setup. The cooler's dimensions are 120(L)x73(W)x148(H)mm, designed to fit medium-sized cases without compromising airflow. Thus, while both coolers are built for efficiency, the Thermalright's emphasis on aesthetics and robust design may appeal more to gamers and PC builders.
Performance in Cooling
Performance is a crucial aspect when comparing these coolers. The iUniker Active Cooler claims to lower CPU temperatures to under 56°C during stress tests, outperforming passive coolers by 20-30°C. This makes it an excellent choice for Raspberry Pi enthusiasts looking to enhance performance without the noise. On the other hand, the Thermalright Assassin King achieves a maximum airflow of 66.17 CFM, with a noise level of up to 25.6 dB, making it suitable for mid-range to high-end CPUs. This performance indicates that while the iUniker excels in a compact setup, the Thermalright is built to handle more demanding cooling tasks.
Compatibility and Installation
The iUniker Active Cooler is tailor-made for the Raspberry Pi 5, ensuring seamless integration and straightforward installation, thanks to pre-applied thermal tape and included screws. This feature is particularly beneficial for users who may not have extensive technical knowledge. Conversely, the Thermalright Assassin King supports a wide range of sockets, including Intel LGA1700 and AMD AM4, making it highly versatile for various builds. It comes with metal fasteners specific to each platform, ensuring a secure fit. Thus, while the iUniker is easy to install for a specific device, the Thermalright offers broader compatibility for diverse setups.
Noise Levels
When it comes to noise levels, the iUniker Active Cooler stands out with its ultra-quiet operation, maintaining sound levels below 18 dB even under load. This feature is essential for users who prioritize a silent computing environment, such as in home theaters or quiet offices. The Thermalright Assassin King, while also relatively quiet, has a maximum noise level of 25.6 dB. Although this is still manageable, it is noticeably louder than the iUniker. Therefore, for those who value a peaceful setup, the iUniker clearly takes the lead.
Price Comparison
In terms of pricing, the iUniker Active Cooler is currently available for $9.99, making it an economical choice for Raspberry Pi users. On the other hand, the Thermalright Assassin King is priced at $19.82, roughly about 98% higher than its competitor. This substantial price difference could significantly influence the decision for budget-conscious consumers, particularly those who need a cooling solution specifically for Raspberry Pi devices.
Brand Reputation
Brand reputation plays a role in consumer choices. iUniker is known for providing reliable cooling solutions specifically tailored for Raspberry Pi products, making it a trusted name among Pi enthusiasts. Conversely, Thermalright has over 20 years of experience in the cooling market, known for its innovative designs and quality products. This established reputation may sway users toward the Thermalright cooler, especially those building high-performance PCs. Nevertheless, both brands have their merits, depending on the user’s specific needs.
Which should you buy?
Choosing between the iUniker Active Cooler for Raspberry Pi 5 and the Thermalright Assassin King 120 SE White ARGB ultimately depends on your specific requirements. If you are a Raspberry Pi user seeking a budget-friendly, ultra-quiet cooling solution, the iUniker cooler is the clear winner at $9.99. However, for those looking to cool a high-performance CPU with the added flair of ARGB lighting and broader compatibility across various platforms, the Thermalright cooler at $19.82 offers superior performance and aesthetics. Consider your needs carefully to make the most informed choice.

