be Quiet! Pure Loop 2 FX 240mm vs Thermalright Assassin X 120 SE CPU Air Cooler
Updated August 2026 — The be Quiet! Pure Loop 2 FX 240mm offers superior cooling performance and aesthetics, while the Thermalright Assassin X 120 SE is a budget-friendly option. Choose based on your needs and budget.
The be Quiet! Pure Loop 2 FX 240mm offers superior cooling performance and aesthetics, while the Thermalright Assassin X 120 SE is a budget-friendly option. Choose based on your needs and budget.
Why be Quiet! Pure Loop 2 FX 240mm is better
Cooling Performance
Dual fans provide better airflow.
Aesthetic Appeal
ARGB illumination enhances visual appeal.
Longevity
Refillable coolant system extends lifespan.
Why Thermalright Assassin X 120 SE CPU Air Cooler is better
Price
Significantly cheaper at C$25.59.
Size
More compact design for smaller cases.
Noise Level
Operates quietly at 25.6 dB(A).
Overall score
Specifications
| Spec | be Quiet! Pure Loop 2 FX 240mm | Thermalright Assassin X 120 SE CPU Air Cooler |
|---|---|---|
| Socket Compatibility | Intel 1700/1200/2066, AMD AM5/AM4 | Intel 115X/1200/1700, AMD AM4 |
| Fan Speed | PWM high-speed | 1550 RPM |
| Noise Level | Very low | ≤25.6 dB(A) |
| Cooling Type | Liquid | Air |
| Warranty | 2 years | 1 year |
Dimension comparison
Price Comparison
When it comes to pricing, the be Quiet! Pure Loop 2 FX 240mm is significantly more expensive at C$118.12 compared to the Thermalright Assassin X 120 SE CPU Air Cooler, which is priced at a mere C$25.59. This difference of C$92.53 suggests that the be Quiet! cooler may offer additional features or performance capabilities that justify its higher price. While the Thermalright cooler is budget-friendly, it may appeal more to users looking for basic cooling solutions without the extra frills that come with more advanced models.
Cooling Performance
Cooling performance is a critical factor when choosing a CPU cooler. The be Quiet! Pure Loop 2 FX features two high-speed 120mm PWM fans designed to provide high air pressure, which is vital for efficient cooling. In contrast, the Thermalright Assassin X 120 SE has a single 120mm PWM fan with a maximum airflow of 66.17 CFM and operates at up to 1550 RPM. While the exact cooling performance metrics are not provided, the dual-fan setup of the be Quiet! cooler generally indicates superior cooling potential, especially in overclocked or high-performance scenarios.
Noise Levels
Noise levels are an important consideration for users who value a quieter computing environment. The be Quiet! Pure Loop 2 FX is designed with a doubly decoupled PWM pump that minimizes vibration and noise, which is ideal for silent builds. The Thermalright Assassin X 120 SE has a noise level of up to 25.6 dB(A) at maximum fan speed, which is relatively quiet for a CPU cooler. While both coolers aim for low noise operation, the advanced design of the be Quiet! cooler may offer a quieter experience, particularly under load.
Installation and Compatibility
Both coolers boast broad compatibility with various CPU sockets. The be Quiet! Pure Loop 2 FX supports Intel sockets including 1700, 1200, and 2066, as well as AMD’s AM5 and AM4. The Thermalright Assassin X 120 SE is compatible with Intel’s 115X, 1200, and 1700, and AMD’s AM4 sockets. In terms of installation, the be Quiet! cooler includes an easy-to-access refill port and a coolant bottle, which can extend its lifespan. The Thermalright model includes metal fasteners for secure installation. While both options are user-friendly, the be Quiet! cooler's refillable design adds a unique benefit.
Aesthetic Appeal
Aesthetic design can influence a buyer's choice, especially for those who value the look of their build. The be Quiet! Pure Loop 2 FX features vibrant ARGB illumination and an all-black design combined with aluminum accents, providing a stylish look that can enhance the visual appeal of any setup. On the other hand, the Thermalright Assassin X 120 SE focuses more on a functional design without specific mention of lighting features. If aesthetics are important to you, the be Quiet! cooler stands out as the more visually appealing option.
Longevity and Maintenance
Longevity and ease of maintenance are crucial for any cooling solution. The be Quiet! Pure Loop 2 FX is designed with a refillable coolant system, allowing for a longer lifespan with proper maintenance. The included coolant bottle supports this feature, making it easier to keep the cooler operating efficiently over time. Meanwhile, the Thermalright Assassin X 120 SE boasts an impressive industrial service life of up to 20,000 hours, thanks to its S-FDB bearings. While both coolers are built for longevity, the be Quiet! cooler offers a more hands-on approach to maintenance, while the Thermalright model promises durability out of the box.
Brand Reputation and Support
Brand reputation can significantly influence purchasing decisions. be quiet! is well-regarded for its focus on silent operation and high-quality cooling solutions, making it a trusted choice among PC enthusiasts. Thermalright has over 20 years of experience and is recognized for developing various computer accessories, with a solid standing in both domestic and international markets. However, be quiet! is often specifically praised for its cooling performance and quiet operation, which could sway users looking for those particular advantages.
Which should you buy?
Ultimately, the choice between the be Quiet! Pure Loop 2 FX 240mm and the Thermalright Assassin X 120 SE CPU Air Cooler comes down to your specific needs and budget. If you prioritise advanced features, aesthetics, and superior cooling performance, the be Quiet! cooler is worth the investment at C$118.12. However, if you are budget-conscious and require a reliable, straightforward cooling solution, the Thermalright model at C$25.59 offers excellent value. Each cooler has its strengths, so consider what aspects are most important for your build before making a decision.
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