be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler vs Thermalright Peerless Assassin 120 Digital ARGB
Updated August 2026 — be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler leads on cooling performa and noise level.
The be quiet! Dark Rock Pro 5 offers superior cooling performance and quieter operation, while the Thermalright Peerless Assassin 120 Digital ARGB Black is a more budget-friendly option with decent features.
Why be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler is better
Cooling Performance
Dark Rock Pro 5 has higher maximum fan speed and more heat pipes.
Noise Levels
Dark Rock Pro 5 operates quieter in both modes.
Build Quality
Dark Rock Pro 5 features a premium design and materials.
Why Thermalright Peerless Assassin 120 Digital ARGB is better
Price
Peerless Assassin is significantly cheaper.
Compatibility
Peerless Assassin supports newer platforms like AM5.
Aesthetics
Peerless Assassin has RGB lighting and a digital display.
Overall score
Specifications
| Spec | be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler | Thermalright Peerless Assassin 120 Digital ARGB |
|---|---|---|
| Max RPM | 2000 | 1850 |
| Noise Level | ≤25 dB(A) | ≤25.6 dB(A) |
| Material | Copper | Copper |
| Modes | Quiet/Performance | N/A |
| Fan Type | PWM | S-FDB |
Dimension comparison
Overview
When it comes to cooling your CPU, both the be quiet! Dark Rock Pro 5 and the Thermalright Peerless Assassin 120 Digital ARGB Black are compelling choices. The Dark Rock Pro 5 is priced at $84.90, while the Peerless Assassin offers a more budget-friendly option at $45.90, making it about 46% cheaper. Both coolers are designed to efficiently manage CPU temperatures, but they cater to different needs and preferences.
Design and Aesthetics
The be quiet! Dark Rock Pro 5 boasts a distinctive black design that has become synonymous with the brand. It features a special coating with ceramic particles, which not only enhances its aesthetics but also contributes to its cooling performance. In contrast, the Thermalright Peerless Assassin 120 Digital ARGB Black incorporates a modern touch with its digital screen top cover and RGB lighting, appealing to users who appreciate customizable aesthetics in their PC builds. While the Dark Rock Pro 5 is slightly bulkier with dimensions of 145 x 136 x 168 mm, the Peerless Assassin is designed to fit comfortably in most cases with its size of 138 x 125 x 162 mm.
Cooling Performance
In terms of cooling performance, the be quiet! Dark Rock Pro 5 features 7 high-performance copper heat pipes, enabling it to maintain low temperatures even during intense CPU tasks. It offers a maximum fan speed of up to 2000 RPM in Performance Mode, which is essential for overclocked systems. On the other hand, the Thermalright Peerless Assassin utilizes 6 heat pipes and can reach speeds of 1850 RPM, which still provides effective cooling but slightly less than its competitor. The Dark Rock Pro 5's design is optimized for high airflow, making it more suitable for extreme performance scenarios.
Noise Levels
Noise levels are critical for many PC builders, particularly those seeking quiet operation. The Dark Rock Pro 5 excels in this regard, featuring decoupled fan mounting that minimizes noise-generating turbulence, making it ideal for silent builds. In Quiet Mode, the fans spin at up to 1500 RPM, providing a more serene experience during normal applications. Meanwhile, the Thermalright Peerless Assassin operates at a maximum noise level of 25.6 dB(A), which is relatively quiet but may not match the ultra-silent performance of the Dark Rock Pro 5. Therefore, if silence is paramount, the Dark Rock Pro 5 is the clear winner.
Installation Process
Both coolers are designed for user-friendly installation, but they offer different experiences. The Dark Rock Pro 5 features a detachable mesh top cover, allowing for easier access during installation. Its black mounting kit is pre-installed, which simplifies the overall setup process. Conversely, the Thermalright Peerless Assassin also provides straightforward installation with dual-platform mounting clips compatible with various CPU sockets. However, the Peerless Assassin's design might require a bit more attention during installation due to its dual tower and dual fan setup. Overall, the Dark Rock Pro 5 may offer a more seamless installation experience.
Compatibility
Compatibility is essential when selecting a CPU cooler. The be quiet! Dark Rock Pro 5 supports a wide range of Intel and AMD sockets, ensuring it will fit most builds. However, the Thermalright Peerless Assassin has the added advantage of explicitly supporting newer platforms like AM5 and LGA1700, making it a more future-proof option for those looking to upgrade their systems. Its compatibility with both AMD and Intel platforms enhances its versatility, catering to a broader audience.
Price and Value
The price difference between the two coolers is significant, with the be quiet! Dark Rock Pro 5 retailing at $84.90 and the Thermalright Peerless Assassin at $45.90. This makes the Peerless Assassin about 46% cheaper, which may appeal to budget-conscious consumers. However, the Dark Rock Pro 5 offers advanced features and superior cooling performance, justifying its higher price for enthusiasts who demand the best. In terms of value, the choice largely depends on your specific cooling needs and budget.
Which should you buy?
Ultimately, the decision between the be quiet! Dark Rock Pro 5 and the Thermalright Peerless Assassin 120 Digital ARGB Black comes down to your individual requirements. If you're seeking top-tier cooling performance, quiet operation, and a premium aesthetic, the Dark Rock Pro 5 is the better option, though at a higher price point. However, if you're on a tighter budget and still desire effective cooling with modern design elements, the Peerless Assassin presents an attractive alternative. Each cooler has its strengths, catering to different types of users in the ever-evolving landscape of PC building.

