be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler vs Thermalright Peerless Assassin 120 SE V3 CPU Air
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 SE V3 is a budget-friendly option. Choose based on your priorities.
Why be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler is better
Cooling Performance
Dark Rock Pro 5 has 7 heat pipes vs 6 in Peerless Assassin.
Noise Levels
Dark Rock Pro 5 features a Quiet Mode for lower noise.
Build Quality
Dark Rock Pro 5 has a premium design with a detachable cover.
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Price
Peerless Assassin is significantly cheaper at $35.90.
Compact Size
Peerless Assassin is slightly smaller, making it easier to fit.
Fan Speed
Both have fans that can reach 2000 RPM, but Peerless offers good performance at a lower price.
Overall score
Specifications
| Spec | be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler | Thermalright Peerless Assassin 120 SE V3 CPU Air |
|---|---|---|
| Max RPM | 2000 | 2000 |
| Airflow | N/A | 70.84 CFM |
| Noise Level | ≤25 dB(A) | ≤29.8 dB(A) |
| Material | Copper/Aluminium | Aluminium |
| Compatibility | Intel/AMD | Intel/AMD |
Dimension comparison
Overview of the Products
In this comparison, we will evaluate the be quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler against the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler. The Dark Rock Pro 5 is priced at $84.90, while the Peerless Assassin 120 SE V3 comes in at a significantly lower price of $35.90, making it about 57% cheaper than its competitor. Both coolers cater to different segments of the CPU cooling market, with unique features that may appeal to various users.
Design and Build Quality
The design and build quality of a CPU cooler can significantly impact its performance and aesthetic appeal. The be quiet! Dark Rock Pro 5 features an iconic design with a special black coating and a detachable mesh top cover, which adds to its elegance. It measures 145 x 136 x 168 mm, making it a substantial cooler that reflects its high-end positioning. In contrast, the Thermalright Peerless Assassin 120 SE V3, while also visually appealing, opts for a more utilitarian design with a dual-tower structure. It measures 125 x 135 x 155 mm, making it slightly more compact. Both coolers boast high-quality materials, but the Dark Rock Pro 5 stands out for its premium finish and sophisticated design elements.
Cooling Performance
Cooling performance is a critical factor when selecting a CPU cooler. The be quiet! Dark Rock Pro 5 is equipped with 7 high-performance copper heat pipes and two Silent Wings PWM fans that can operate at speeds of up to 2000 RPM. This allows it to maintain low temperatures even in heavily overclocked systems. On the other hand, the Thermalright Peerless Assassin 120 SE V3 features 6 heat pipes and dual PWM fans that can also reach speeds of 2000 RPM, but with an airflow of 70.84 CFM and a maximum operating noise of 29.8 dB(A). While both coolers perform admirably, the Dark Rock Pro 5's additional heat pipe may provide a slight edge in extreme conditions.
Noise Levels
Noise levels during operation are an important consideration for many PC builders. The be quiet! Dark Rock Pro 5 is designed specifically for quiet operation, featuring advanced fluid-dynamic bearings and vibration-isolating elements that minimize noise-generating turbulence. In Quiet Mode, fan speeds can go up to 1500 RPM, keeping noise levels to a minimum. Conversely, the Thermalright Peerless Assassin 120 SE V3 operates at a maximum of 2000 RPM, with an operating noise level of up to 29.8 dB(A). While it does have a PWM functionality to adjust fan speed based on temperature, users seeking a quieter experience may prefer the Dark Rock Pro 5's dedicated Quiet Mode.
Installation Process
The ease of installation can be a deciding factor for many users. The Dark Rock Pro 5 boasts a user-friendly design, including a black mounting kit and a pre-installed mounting bridge, which simplifies the installation process. Its detachable mesh top cover allows for easy access when mounting. The Thermalright Peerless Assassin 120 SE V3 also offers a straightforward installation process, compatible with multiple platforms including Intel and AMD. However, it requires the use of the motherboard's original backplate for AMD installations. Both coolers are designed for ease of use, but the Dark Rock Pro 5 may provide a more seamless experience for users.
Compatibility
Compatibility with various CPU sockets is essential for ensuring that the cooler will work with your build. The be quiet! Dark Rock Pro 5 supports a range of sockets, including Intel and AMD configurations, making it versatile for different systems. Similarly, the Thermalright Peerless Assassin 120 SE V3 supports both Intel and AMD sockets, including the latest AM4 and AM5 formats, which enhances its appeal to a broader audience. With both coolers offering wide compatibility, users should consider which sockets they need to support when making their final decision.
Price Comparison
When considering price, the Thermalright Peerless Assassin 120 SE V3 stands out as a budget-friendly option at $35.90, making it an attractive choice for those who want good performance without breaking the bank. In contrast, the be quiet! Dark Rock Pro 5 is priced at $84.90, which is about 136% higher than the Peerless Assassin. While the Dark Rock Pro 5 offers premium features and design, the significant price difference may lead budget-conscious consumers to lean towards the more affordable option.
Which should you buy?
Choosing between the be quiet! Dark Rock Pro 5 and the Thermalright Peerless Assassin 120 SE V3 ultimately depends on your specific needs and budget. If you prioritize premium design, quieter operation, and enhanced cooling performance, the Dark Rock Pro 5 is an excellent choice, albeit at a higher price point. Conversely, if you're looking for a solid, cost-effective cooling solution that still offers good performance, the Peerless Assassin 120 SE V3 is a compelling option. Ultimately, both coolers have their strengths, and your decision should reflect your budget and cooling requirements.

