be Quiet! Pure Loop 2 FX 240mm vs Thermalright Assassin King 120 SE ARGB CPU Air Cooler
Updated August 2026 — The be Quiet! Pure Loop 2 FX 240mm offers superior cooling performance and aesthetics, while the Thermalright Assassin King 120 SE ARGB is a budget-friendly option. Choose based on your priorities.
The be Quiet! Pure Loop 2 FX 240mm offers superior cooling performance and aesthetics, while the Thermalright Assassin King 120 SE ARGB is a budget-friendly option. Choose based on your priorities.
Why be Quiet! Pure Loop 2 FX 240mm is better
Cooling Performance
Dual-fan system provides better cooling efficiency.
Aesthetic Appeal
Stylish design with vibrant ARGB illumination.
Noise Levels
Engineered for quieter operation.
Why Thermalright Assassin King 120 SE ARGB CPU Air Cooler is better
Price
Significantly more affordable option.
Installation
Equipped with metal fasteners for easy setup.
Brand Reputation
Strong presence in the gaming community.
Overall score
Specifications
| Spec | be Quiet! Pure Loop 2 FX 240mm | Thermalright Assassin King 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Price | C$118.12 | C$24.59 |
| Fan Speed | PWM | 1550 RPM |
| Airflow | High | 66.17 CFM |
| Noise Level | Low | ≤25.6 dB(A) |
| ARGB Support | Yes | Yes |
Dimension comparison
Price Comparison
The be Quiet! Pure Loop 2 FX 240mm comes with a price tag of C$118.12, while the Thermalright Assassin King 120 SE ARGB CPU Air Cooler is significantly more affordable at C$24.59. This stark difference of C$93.53 highlights a substantial investment for the Pure Loop 2 FX, making it essential to consider whether its advanced features justify the higher cost. If budget constraints are a primary concern, the Thermalright Assassin King provides an accessible option without compromising on essential cooling performance.
Cooling Performance
When it comes to cooling performance, the be Quiet! Pure Loop 2 FX 240mm is designed with a high-speed PWM pump and two Light Wings 120mm fans that ensure high air pressure, making it a formidable choice for those seeking optimal cooling efficiency. In contrast, the Thermalright Assassin King features a single PWM fan that operates at a speed of 1550 RPM, providing an airflow of 66.17 CFM. While the Assassin King is capable of cooling, the dual-fan system in the Pure Loop 2 FX suggests a more robust cooling solution, particularly for high-performance builds.
Socket Compatibility
Socket compatibility is crucial for ensuring that a CPU cooler fits your setup. The be Quiet! Pure Loop 2 FX supports a wide range of Intel sockets, including 1700, 1200, and several others, as well as AMD's AM5 and AM4. On the other hand, the Thermalright Assassin King supports Intel's 115X/1200/1700 series and AMD's AM4 and AM5 sockets. Both products cover the latest socket types, but the broader compatibility of the Pure Loop 2 FX may appeal to users with more diverse or future-proofed builds.
Noise Levels
The be Quiet! Pure Loop 2 FX is engineered for quiet operation, featuring a doubly decoupled PWM pump that minimises vibration and noise. Although specific decibel ratings are not provided, the emphasis on quiet operation aligns with the brand's reputation. In comparison, the Thermalright Assassin King boasts a noise level of up to 25.6 dB(A) during operation. While both coolers aim to be quiet, the Pure Loop 2 FX's design suggests it may offer a more silent experience, especially under load.
Aesthetic Appeal
Aesthetics play a significant role in many PC builds, and the be Quiet! Pure Loop 2 FX excels with its stylish all-black design and vibrant ARGB illumination. The inclusion of an ARGB-PWM hub allows for synchronization with up to six components, creating a cohesive and visually appealing setup. In contrast, the Thermalright Assassin King also features ARGB lighting effects but may not provide the same level of visual integration or style as the Pure Loop 2 FX. For users who prioritise aesthetics alongside performance, the Pure Loop 2 FX is likely the more attractive option.
Ease of Installation
Installation ease can greatly affect the user experience when setting up a CPU cooler. The be Quiet! Pure Loop 2 FX includes an easy-to-access refill port and comes with a coolant bottle, indicating a user-friendly approach to maintenance. Additionally, it supports a variety of mounting options for both Intel and AMD sockets. Meanwhile, the Thermalright Assassin King is equipped with metal fasteners for easy installation on both platforms. While both models cater to ease of installation, the added maintenance features of the Pure Loop 2 FX may provide a more convenient experience in the long run.
Brand Reputation
Brand reputation can influence purchasing decisions, and be quiet! is well-regarded for its focus on silent computing solutions and quality products. The be Quiet! Pure Loop 2 FX continues this trend with its emphasis on quiet operation and effective cooling. Thermalright, with over 20 years in the industry, also has a strong reputation, particularly within the gaming community. Both brands are respected, but be quiet!’s specific focus on low-noise solutions may resonate more with users prioritising silence in their builds.
Which should you buy?
Choosing between the be Quiet! Pure Loop 2 FX 240mm and the Thermalright Assassin King 120 SE ARGB CPU Air Cooler ultimately depends on your specific needs and budget. If you’re looking for superior cooling performance, aesthetics, and quieter operation, the be Quiet! Pure Loop 2 FX may be worth the investment at C$118.12. However, if budget is a primary concern and you still want reliable cooling performance, the Thermalright Assassin King at C$24.59 is a solid choice. Both coolers have their merits, but the decision hinges on whether you value advanced features and aesthetics over cost-efficiency.
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