be quiet! Dark Rock Pro 5 Air CPU Cooler vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Updated August 2026 — The be quiet! Dark Rock Pro 5 Air CPU Cooler outperforms the Thermalright Peerless Assassin 120 SE in cooling efficiency and noise reduction, making it the better choice for enthusiasts. However, the Thermalright offers excellent value for budget-conscious consumers.
The be quiet! Dark Rock Pro 5 Air CPU Cooler outperforms the Thermalright Peerless Assassin 120 SE in cooling efficiency and noise reduction, making it the better choice for enthusiasts. However, the Thermalright offers excellent value for budget-conscious consumers.
Why be quiet! Dark Rock Pro 5 Air CPU Cooler is better
Cooling Performance
Dark Rock Pro 5 has superior heat dissipation with 7 heat pipes.
Noise Levels
Dark Rock Pro 5 features advanced noise reduction technologies.
Design
Dark Rock Pro 5 has a premium and elegant aesthetic.
Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better
Price
Peerless Assassin 120 SE is significantly cheaper.
ARGB Lighting
Peerless Assassin 120 SE offers vibrant ARGB effects.
Weight
Peerless Assassin 120 SE is lighter, making installation easier.
Overall score
Specifications
| Spec | be quiet! Dark Rock Pro 5 Air CPU Cooler | Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Max RPM | 2000 | 1500 |
| Airflow (CFM) | 78 | 66.17 |
| Noise Level | ≤25 dB(A) | ≤25.6 dB(A) |
| Socket Compatibility | Intel/AMD | Intel/AMD |
| Speed Modes | 2 | 1 |
Dimension comparison
Pricing Comparison
When it comes to pricing, the be quiet! Dark Rock Pro 5 Air CPU Cooler is significantly more expensive than the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler. The Dark Rock Pro 5 is priced at £75.99, while the Peerless Assassin 120 SE is a much more affordable option at £28.79. This difference of £47.20 could be a deciding factor for budget-conscious consumers looking for effective cooling solutions. While the Dark Rock Pro 5 offers premium features and performance, the Thermalright cooler provides excellent value for those who may not need the highest-end specifications.
Design and Aesthetics
In terms of design, the be quiet! Dark Rock Pro 5 Air stands out with its elegant and distinctive appearance, featuring a special black coating with ceramic particles that gives it a premium look. Its unique design has been a hallmark of the Dark Rock series, making it easily recognisable. On the other hand, the Thermalright Peerless Assassin 120 SE boasts colourful ARGB lighting effects, appealing to users who prefer a more vibrant aesthetic in their build. Both coolers are designed to fit well within a variety of setups, with the Dark Rock Pro 5 maintaining a sleek, minimalist style, while the Peerless Assassin adds a splash of colour.
Cooling Performance
Cooling performance is a critical aspect for any CPU cooler, and the be quiet! Dark Rock Pro 5 excels in this area. It features seven high-performance copper heat pipes that ensure efficient heat dissipation, even during peak CPU performance or heavy overclocking. The dual Silent Wings PWM fans can operate at a maximum speed of 2000 RPM in Performance Mode, providing exceptional airflow and cooling capability. In contrast, the Thermalright Peerless Assassin 120 SE employs two PWM fans with a maximum speed of 1500 RPM. While it still offers respectable performance with an airflow of 66.17 CFM, it may not match the cooling efficiency of the Dark Rock Pro 5 under extreme conditions.
Noise Levels
Noise levels are an important consideration for many users, especially those building quiet systems. The be quiet! Dark Rock Pro 5 is designed with noise reduction in mind, featuring decoupled fan mounting and vibration-isolating elements that minimise sound-generating turbulence. In Quiet Mode, it operates at a maximum fan speed of 1500 RPM, ensuring a serene computing experience. The Thermalright Peerless Assassin 120 SE, while also designed for quiet operation, has a specified noise level of up to 25.6 dB(A) at maximum fan speed. While it is still relatively quiet, users seeking the utmost silence may prefer the advanced features of the Dark Rock Pro 5.
Installation Process
When considering installation, both coolers offer user-friendly designs, but the be quiet! Dark Rock Pro 5 takes it a step further with its simple and elegant installation concept. The cooler features a detachable mesh top cover that allows for easy access, and a completely black mounting kit that complements its aesthetic. The Thermalright Peerless Assassin 120 SE also provides compatibility with a wide range of CPU sockets and comes with the necessary mounting hardware. However, the Dark Rock Pro 5’s innovative design may make the installation process slightly more straightforward for users.
Brand Reputation
Brand reputation plays a significant role in consumer choice, and both be quiet! and Thermalright have established themselves in the market. be quiet! is well-regarded for its focus on silent operation and high-performance cooling solutions, making the Dark Rock Pro 5 a popular choice for enthusiasts. Thermalright, with over 20 years of experience, has made a name for itself in the player market, offering reliable and efficient cooling products. While both brands are trusted, be quiet!’s strong emphasis on noise reduction may appeal more to those prioritising a quiet workspace.
Features and Functionality
The be quiet! Dark Rock Pro 5 is equipped with features that enhance its functionality, including a Speed Switch that allows users to toggle between Quiet Mode and Performance Mode. This versatility ensures that users can optimise cooling according to their needs. In contrast, the Thermalright Peerless Assassin 120 SE features a unique AGHP technique with six pure copper heat pipes, which improves cooling efficiency by addressing the inverse gravity effect. While both coolers offer distinct features, the added adaptability of the Dark Rock Pro 5 may make it more appealing for users who want control over their system’s performance.
Which should you buy?
Choosing between the be quiet! Dark Rock Pro 5 Air CPU Cooler and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler ultimately depends on your budget and cooling needs. If you are looking for a high-performance cooler with exceptional cooling capabilities, elegant design, and advanced noise reduction features, the Dark Rock Pro 5 is worth the investment at £75.99. However, if you are seeking a more economical option that still provides good performance and stylish aesthetics, the Thermalright Peerless Assassin 120 SE at £28.79 offers excellent value without compromising too much on quality.
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