be Quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler vs Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm
Updated August 2026 — The be Quiet! Dark Rock Pro 5 offers superior cooling performance and quieter operation, making it the better choice for high-end builds. The Thermalright Peerless Assassin 120 is a budget-friendly option with decent performance.
The be Quiet! Dark Rock Pro 5 offers superior cooling performance and quieter operation, making it the better choice for high-end builds. The Thermalright Peerless Assassin 120 is a budget-friendly option with decent performance.
Why be Quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler is better
Cooling Performance
Dark Rock Pro 5 maintains lower temperatures under heavy loads.
Noise Levels
Dark Rock Pro 5 operates more quietly than the Peerless Assassin.
Build Quality
Dark Rock Pro 5 features premium materials and design.
Why Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm is better
Price
Peerless Assassin is significantly cheaper.
Installation
Peerless Assassin has a simpler installation process.
RGB Features
Peerless Assassin includes customizable RGB lighting.
Overall score
Specifications
| Spec | be Quiet! Dark Rock Pro 5 Quiet Cooling CPU Cooler | Thermalright Peerless Assassin 120 Digital ARGB Black CPU Cooler Air with 6X6mm |
|---|---|---|
| Max RPM | 2000 | 1850 |
| Noise Level | ≤24 dB | ≤25.6 dB |
| Material | Copper & Aluminum | Copper |
| Modes | Quiet/Performance | N/A |
| RGB | No | Yes |
Dimension comparison
Overview
When it comes to CPU coolers, the be Quiet! Dark Rock Pro 5 and the Thermalright Peerless Assassin 120 Digital ARGB Black offer distinct advantages catering to different user needs. Priced at C$169.99, the Dark Rock Pro 5 is positioned as a high-end cooler, while the more budget-friendly Peerless Assassin is available for C$62.90. Both coolers promise effective thermal management but differ significantly in design, features, and performance capabilities.
Design and Aesthetics
Design plays a crucial role in a CPU cooler's appeal, and both the Dark Rock Pro 5 and the Peerless Assassin bring unique styles to the table. The Dark Rock Pro 5 features a distinctive black design complemented by a special coating with ceramic particles. This cooler is renowned for its sleek appearance and iconic design, making it a favourite among enthusiasts who value aesthetics as well as performance. In contrast, the Peerless Assassin employs a dual-tower design that houses dual fans and a magnetic top cover, contributing to its modern and functional look. The digital display on the Peerless Assassin adds a contemporary touch, appealing to users who appreciate innovative designs.
Cooling Performance
In terms of cooling performance, the Dark Rock Pro 5 excels with its use of 7 high-performance copper heat pipes, allowing it to maintain low temperatures even in heavily overclocked systems. This cooler operates efficiently with two Silent Wings PWM fans that provide a maximum fan speed of 2000 RPM in Performance Mode, ensuring effective heat dissipation. On the other hand, the Peerless Assassin achieves a maximum fan speed of 1850 RPM with its dual fans. While the Peerless Assassin also features 6 copper heat pipes, its overall heat dissipation might not quite match the advanced design of the Dark Rock Pro 5, especially under extreme conditions.
Noise Levels
Noise levels are an important consideration for many PC builders, particularly those who prefer a quieter computing experience. The Dark Rock Pro 5 shines in this regard, with its advanced fluid-dynamic bearings and vibration-isolating elements that reduce turbulence and overall noise levels. The maximum operating noise of the Dark Rock Pro 5 is not explicitly stated, but its design prioritises silent operation. Conversely, the Peerless Assassin boasts an operating noise level of ≤25.6 dB(A), which is relatively quiet but may still be discernible in a silent setup. Users seeking a near-silent operation may lean towards the Dark Rock Pro 5.
Installation Process
Both coolers offer user-friendly installation processes, but their approaches differ. The Dark Rock Pro 5 features a clever design with a detachable mesh top cover that simplifies the installation process. Its black mounting kit is pre-installed for easier setup, allowing users to install the cooler without hassle. The Peerless Assassin, while also compatible with mainstream ATX chassis, presents a slightly more intricate installation with its dual-tower design. However, it still aims for an accessible setup, making it suitable for a variety of builders.
Compatibility
Compatibility is essential when selecting a CPU cooler, and both models cater to standard ATX chassis. The Dark Rock Pro 5 is designed to accommodate high-end CPUs, thanks to its nickel-plated base that is compatible with liquid metal thermal grease. This characteristic allows for improved thermal conductivity, especially beneficial for overclocking scenarios. The Peerless Assassin, with its overall height of 162mm, is also designed for compatibility with high-capacity memory and graphics cards, making it a versatile choice for many builds. Both coolers, therefore, offer reliable compatibility, but the Dark Rock Pro 5 is particularly tailored for high-performance setups.
Features and Technologies
The Dark Rock Pro 5 incorporates several advanced features that enhance its performance. Its Speed Switch allows users to toggle between Quiet and Performance Modes, providing flexibility in fan speed management. This cooler's design reflects years of engineering excellence, ensuring high-quality performance and durability. In contrast, the Peerless Assassin stands out with its TRCC Software, which allows users to monitor CPU and GPU temperatures and adjust RGB lighting accordingly. This integration of technology offers a modern touch, appealing to gamers and PC enthusiasts who enjoy customisation options.
Price-to-Performance Ratio
When evaluating the price-to-performance ratio, the differences between the two coolers are stark. The Dark Rock Pro 5 is priced at C$169.99, a premium investment for users seeking top-tier performance and silent operation. Conversely, the Peerless Assassin's price of C$62.90 makes it an attractive option for budget-conscious builders who still desire reliable cooling performance. While the Dark Rock Pro 5 may justify its higher cost with advanced features and superior cooling efficiency, the Peerless Assassin offers excellent value for those who prioritise affordability without sacrificing essential cooling capabilities.
Which should you buy?
Choosing between the be Quiet! Dark Rock Pro 5 and the Thermalright Peerless Assassin 120 Digital ARGB Black ultimately depends on your specific needs and budget. If you are looking for high-end performance, exceptional cooling capabilities, and a virtually silent operation, the Dark Rock Pro 5 is worth the investment. However, if you are on a tighter budget and still require efficient cooling with aesthetic appeal, the Peerless Assassin provides a solid alternative. Both coolers have their strengths, so your decision should align with your performance requirements and financial considerations.
versusfinder.com is a participant in the Amazon.ca Associates Program. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

