be quiet! Pure Rock 3 Black Air Cooler vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Updated August 2026 — The be quiet! Pure Rock 3 Black offers excellent cooling performance and ease of installation, while the Thermalright Peerless Assassin provides advanced features like ARGB lighting. Ultimately, the Pure Rock 3 Black is the better choice for most users.
The be quiet! Pure Rock 3 Black offers excellent cooling performance and ease of installation, while the Thermalright Peerless Assassin provides advanced features like ARGB lighting. Ultimately, the Pure Rock 3 Black is the better choice for most users.
Why be quiet! Pure Rock 3 Black Air Cooler is better
Cooling Capacity
190W TDP vs 66.17 CFM airflow
Installation Ease
Simpler installation process
Noise Levels
Reputation for quieter operation
Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better
Aesthetics
ARGB lighting effects
Heat Pipes
More heat pipes with AGHP technology
Compatibility
Supports more CPU sockets
Overall score
Specifications
| Spec | be quiet! Pure Rock 3 Black Air Cooler | Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Brand | be quiet! | Thermalright |
| Current Price | £27.99 | £28.79 |
| Cooling Tech | Heat pipes | AGHP |
| Noise Level | Low | ≤25.6 dB(A) |
| Compatibility | AM5, AM4 | Multiple Intel/AMD |
Dimension comparison
Overview of the Coolers
In the realm of CPU coolers, the be quiet! Pure Rock 3 Black Air Cooler and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler offer distinct features tailored to different user needs. Priced at £27.99, the Pure Rock 3 Black boasts a robust cooling capacity of 190W TDP, making it suitable for both gaming and entry-level systems. Meanwhile, the Thermalright Peerless Assassin is slightly pricier at £28.79 but brings advanced features such as ARGB lighting and a unique AGHP technique for enhanced thermal performance.
Cooling Performance
The be quiet! Pure Rock 3 Black excels with its 190W TDP cooling capacity, which is designed to handle demanding tasks in consumer PCs. This cooler utilises four 6mm heat pipes that optimise heat distribution, ensuring efficient cooling even in compact builds. On the other hand, the Thermalright Peerless Assassin features six heat pipes that employ AGHP technology, designed to mitigate the effects of gravity on cooling efficiency. This results in a maximum airflow of 66.17 CFM and a noise level of no more than 25.6 dB(A), indicating it operates quietly, which is crucial for maintaining a serene computing environment.
Design and Aesthetics
When it comes to design, both coolers make strong statements. The be quiet! Pure Rock 3 Black has a sleek and slim design that enhances RAM and VRM compatibility while allowing for greater memory height. Its all-black finish gives it a modern look that fits seamlessly into most builds. In contrast, the Thermalright Peerless Assassin 120 SE ARGB stands out with its colourful ARGB lighting effects, appealing to those who prefer a visually striking setup. Its double tower design not only looks impressive but also increases cooling surface area, potentially improving performance further.
Installation Ease
Installation is a crucial factor for many users, and both coolers have been designed with user-friendliness in mind. The be quiet! Pure Rock 3 Black features a preinstalled mounting bridge and an easy fixing method that simplifies the installation process. Users can install it without hassle, even those using AM5 CPUs, as it allows for an offset mounting that centres heat pipes over CPU hotspots. Conversely, the Thermalright Peerless Assassin supports various CPU sockets like Intel’s 115X and AMD’s AM5, and comes with dedicated mounting plates, ensuring compatibility across platforms. However, its more complex design may require a bit more effort during installation.
Noise Levels
Noise output is a key consideration for many PC builders. The be quiet! Pure Rock 3 Black is engineered to deliver high performance with minimal noise, ensuring a quiet operation that doesn't disturb the user experience. Though specific noise levels aren’t detailed, the brand's reputation for quiet operation is well-established. The Thermalright Peerless Assassin, on the other hand, has a stated maximum noise level of 25.6 dB(A), which is relatively quiet for a high-performance cooler. This low-noise operation is particularly beneficial in builds where silence is paramount, such as home theatres or quiet workspaces.
Compatibility
In terms of compatibility, both coolers are designed to fit a wide range of systems. The be quiet! Pure Rock 3 Black is suitable for mainstream and entry-level computers, accommodating various configurations due to its slim design. It ensures that even high-profile RAM can be used without obstruction. The Thermalright Peerless Assassin also boasts broad compatibility, supporting multiple Intel and AMD sockets, including the latest AM5. The inclusion of various mounting hardware allows it to fit seamlessly into a variety of setups, making it a versatile choice for users with different needs.
Price Point
Price can often be a decisive factor in choosing a cooler. The be quiet! Pure Rock 3 Black is available for £27.99, presenting a solid value given its impressive cooling capabilities and user-friendly installation. The Thermalright Peerless Assassin, slightly more expensive at £28.79, offers additional features like ARGB lighting and advanced cooling technology, which may justify the higher cost for users seeking aesthetics and performance. Ultimately, both coolers are reasonably priced for their respective features and performance, catering to different preferences within a similar budget range.
Which should you buy?
Choosing between the be quiet! Pure Rock 3 Black Air Cooler and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler depends largely on your specific needs. If you prioritise a high cooling capacity, quiet operation, and ease of installation, the Pure Rock 3 Black is an excellent choice. However, if you seek advanced features like ARGB lighting and cutting-edge cooling technology, the Thermalright Peerless Assassin might be worth the slightly higher price. Ultimately, both coolers offer solid performance, making them viable options for any PC builder.
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