be Quiet! Pure Loop 2 FX 240mm vs Thermalright Peerless Assassin 120 SE Black CPU Cooler
Updated August 2026 — The be Quiet! Pure Loop 2 FX 240mm offers premium features and aesthetics, while the Thermalright Peerless Assassin 120 SE provides excellent cooling performance at a budget-friendly price. Choose based on your priorities.
The be Quiet! Pure Loop 2 FX 240mm offers premium features and aesthetics, while the Thermalright Peerless Assassin 120 SE provides excellent cooling performance at a budget-friendly price. Choose based on your priorities.
Why be Quiet! Pure Loop 2 FX 240mm is better
Premium features
Includes ARGB lighting and a refillable coolant system
Design
Stylish all-black design with vibrant illumination
Noise levels
Engineered for quieter operation with minimal vibration
Why Thermalright Peerless Assassin 120 SE Black CPU Cooler is better
Price
Significantly more affordable at C$46.79
Cooling performance
Dual tower and dual fan design enhances cooling
Installation
User-friendly installation with metal fasteners
Overall score
Specifications
| Spec | be Quiet! Pure Loop 2 FX 240mm | Thermalright Peerless Assassin 120 SE Black CPU Cooler |
|---|---|---|
| Socket Compatibility | Intel: 1700/1200/2066/1150/1151/1155/2011; AMD: AM5/AM4 | Intel: LGA1150/1151/1155/1156/1200/1700/1851; AMD: AM4/AM5 |
| Airflow | Not specified | 66.17 CFM |
| Noise Level | Not specified | 25.6 dB(A) |
| Cooling Type | Liquid | Air |
| ARGB Lighting | Yes | No |
Dimension comparison
Price Comparison
The be Quiet! Pure Loop 2 FX 240mm is priced at C$118.12, while the Thermalright Peerless Assassin 120 SE Black CPU Cooler is significantly more affordable at C$46.79. This stark difference of C$71.33 may heavily influence budget-conscious consumers. While the Pure Loop 2 FX offers premium features like ARGB illumination and a refillable coolant system, the Peerless Assassin provides excellent cooling performance at a fraction of the cost. If you are seeking a budget-friendly cooling solution, the Thermalright model stands out as a more economical choice.
Cooling Performance
When it comes to cooling performance, the Thermalright Peerless Assassin boasts dual tower and dual fan heat dissipation, which enhances its ability to cool effectively. Its dual PWM fans operate at a maximum speed of 1550 RPM, providing an airflow of 66.17 CFM. In contrast, the be Quiet! Pure Loop 2 FX features two high-speed fans that are designed for high air pressure and optimal cooling efficiency. While exact airflow figures for the Pure Loop 2 FX are not provided, its design suggests it is capable of competitive performance. Therefore, while both products are strong contenders, the Thermalright model may edge out in terms of sheer cooling prowess due to its dual fan design.
Compatibility
The be Quiet! Pure Loop 2 FX supports a wide range of Intel and AMD sockets, including modern options like Intel's LGA 1700 and AMD's AM5. Similarly, the Thermalright Peerless Assassin also accommodates a variety of sockets, providing compatibility with both Intel and AMD platforms. This includes support for Intel's LGA 1851 and AMD's AM4/AM5. Both CPUs ensure that users can install them on most current motherboards. Thus, compatibility is a strong suit for both products, allowing them to cater to a broad user base.
Design and Aesthetics
The aesthetic appeal of cooling products can be a deciding factor for many PC builders. The be Quiet! Pure Loop 2 FX features a stylish all-black design complemented by vibrant ARGB illumination, which can easily integrate with modern builds that prioritise visual flair. It also includes an ARGB-PWM Hub for synchronising up to six components, enhancing the overall aesthetic of the setup. On the other hand, the Thermalright Peerless Assassin sports a sleek black finish with a dual tower design that not only looks impressive but also maximises airflow. While both designs have their merits, the Pure Loop 2 FX may attract those who value RGB lighting and customisation more.
Noise Levels
Noise levels are crucial when selecting a CPU cooler, especially for those who prefer a quieter environment. The be Quiet! Pure Loop 2 FX is designed for minimal vibration and noise, thanks to its doubly decoupled PWM pump. While the exact decibel rating is not specified, the emphasis on quiet operation suggests it is engineered for silent performance. In comparison, the Thermalright Peerless Assassin operates at a noise level of 25.6 dB(A), which is relatively quiet for a dual-fan setup. Thus, those prioritising a silent operation may find the Pure Loop 2 FX to be a more appealing choice, although the Peerless Assassin also offers commendable performance in this area.
Installation Process
Ease of installation is a vital consideration for PC builders, especially those who may be inexperienced. The be Quiet! Pure Loop 2 FX includes an easy-to-access refill port and comes with a coolant bottle, which adds convenience for maintenance and longevity. The installation process is straightforward, as it is compatible with various Intel and AMD sockets. The Thermalright Peerless Assassin also emphasises a user-friendly installation process, equipped with metal fasteners and a mounting kit for both Intel and AMD systems. Given the user-friendly features present in both products, neither cooler should pose significant hurdles during installation.
Longevity and Maintenance
The longevity of cooling solutions is essential, especially for those who wish to invest in a long-term product. The be Quiet! Pure Loop 2 FX features a refillable coolant system, which potentially extends its lifespan and maintenance needs. This system allows users to refresh the coolant periodically, ensuring optimal performance over time. The Thermalright Peerless Assassin, while not featuring a refillable system, is constructed with durable materials like aluminum and has a solid design for consistent performance. Ultimately, the Pure Loop 2 FX is likely to appeal to those who prioritise maintenance and longevity due to its innovative design.
Which should you buy?
In evaluating both the be Quiet! Pure Loop 2 FX 240mm and the Thermalright Peerless Assassin 120 SE Black CPU Cooler, it is clear that each product has its strengths and weaknesses. The Thermalright model is a cost-effective solution with excellent cooling performance, making it ideal for budget-conscious builders. Conversely, the be Quiet! Pure Loop 2 FX offers premium features, including vibrant ARGB lighting and a refillable coolant system, appealing to those who seek both aesthetics and advanced functionality. Your choice ultimately depends on your priorities: if budget and solid cooling are your main concerns, opt for the Thermalright; if you desire premium features and aesthetics, go for the be Quiet! Pure Loop 2 FX.
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