be quiet! Pure Rock Pro 3 Black CPU Air Cooler | 6 vs Thermalright Peerless Assassin 120 Vision MAX ARGB
Updated August 2026 — be quiet! Pure Rock Pro 3 Black CPU Air Cooler | 6 wins on noise level and installation, Thermalright Peerless Assassin 120 Vision MAX ARGB wins on features and cooling.
The Thermalright Peerless Assassin 120 offers superior cooling performance and innovative features, while the be quiet! Pure Rock Pro 3 excels in ease of installation and quieter operation.
Why be quiet! Pure Rock Pro 3 Black CPU Air Cooler | 6 is better
Price
be quiet! is $2.79 cheaper
Installation
easier mounting kit
Noise
optimized for quieter operation
Why Thermalright Peerless Assassin 120 Vision MAX ARGB is better
Cooling Performance
higher RPM and dual-tower design
Display
5-inch IPS LCD for monitoring
Design
magnetic top cover adds functionality
Overall score
Specifications
| Spec | be quiet! Pure Rock Pro 3 Black CPU Air Cooler | 6 | Thermalright Peerless Assassin 120 Vision MAX ARGB |
|---|---|---|
| RPM | unspecified | 2150 |
| Noise Level | quiet | ≤27 dB(A) |
| Compatibility | AMD AM4/AM5, Intel LGA 1700/1150/1151/1200 | AMD AM4/AM5, Intel LGA 1700/1851/115x |
| Cooling Type | Air | Air |
| Fan Type | PWM | PWM |
Dimension comparison
Overview of the Products
The be quiet! Pure Rock Pro 3 Black CPU Air Cooler is priced at $54.90, while the Thermalright Peerless Assassin 120 Vision MAX ARGB Black CPU Air Cooler comes in at $57.69, making the latter about 3% more expensive. Both products target users looking for effective cooling solutions, but they approach cooling technology differently. While both brands are reputable in the CPU cooler market, their unique features set them apart, catering to diverse user preferences and system requirements.
Cooling Performance
The Thermalright Peerless Assassin 120 offers superior cooling performance with a rotation speed of 2150 RPM compared to the be quiet! Pure Rock Pro 3's unspecified RPM. The dual-tower design and six pure copper heat pipes of the Thermalright cooler aim to deliver optimal thermal management, especially in high-demand scenarios. On the other hand, the be quiet! cooler features six high-performance 6mm heat pipes and an optimized fan blade design, ensuring effective airflow. While the exact cooling efficiencies are not quantified, the dual-tower setup of the Thermalright suggests it may handle overclocked CPUs better, potentially making it the better choice for enthusiasts.
Design and Aesthetics
In terms of design, the Thermalright cooler incorporates a magnetic top cover with a built-in 5-inch IPS LCD screen that provides real-time system monitoring and customizable display themes. This innovative feature adds an aesthetic appeal and functionality that the be quiet! cooler lacks. The Pure Rock Pro 3, while visually striking with a discreet black design, does not offer any digital display. Users looking for both functionality and flair may prefer the Thermalright, while those who appreciate a minimalistic approach might lean towards be quiet!.
Compatibility
The be quiet! Pure Rock Pro 3 is designed for a variety of platforms, including AMD AM4/AM5 and Intel LGA 1700/1150/1151/1200. Its unique offset design also increases RAM and VRM cooler compatibility. The Thermalright Peerless Assassin 120 is also versatile, supporting AMD AM4/AM5 and Intel LGA 1700/1851/115x. Both products are suitable for mainstream ATX cases, but the be quiet! cooler's compact offset design may provide an edge in tight builds. This slight advantage could be crucial for users prioritizing RAM clearance alongside cooling performance.
Installation Process
When it comes to installation, the be quiet! Pure Rock Pro 3 touts an easy-to-use mounting kit that simplifies the attachment process. This user-friendly feature is particularly beneficial for first-time builders or those who wish to avoid complicated setups. The Thermalright Peerless Assassin 120 does not provide specific information on its installation process, which may imply a more complex setup. The simplicity of the Pure Rock Pro 3 could be a deciding factor for many users, emphasizing the importance of user experience in product selection.
Noise Levels
The noise level is a critical consideration for many PC builders, especially for those seeking a quiet working environment. The be quiet! Pure Rock Pro 3 is designed to operate quietly, thanks to its optimized fan blades and quiet PWM fan technology, although no specific decibel level is mentioned. The Thermalright Peerless Assassin 120 claims an operating noise of ≤27 dB(A), providing a tangible metric for potential buyers. For users highly sensitive to noise, the Thermalright cooler offers a clear specification that may sway their decision.
Price Analysis
At $54.90, the be quiet! Pure Rock Pro 3 is approximately $2.79 cheaper than the Thermalright Peerless Assassin 120, which is priced at $57.69. This price difference of about 5% may influence budget-conscious consumers. However, it's essential to consider the features and performance each cooler offers. While the be quiet! cooler is slightly less expensive, the additional features of the Thermalright, such as the display and enhanced cooling capabilities, could justify the higher price for many users.
Which should you buy?
Choosing between the be quiet! Pure Rock Pro 3 and the Thermalright Peerless Assassin 120 ultimately depends on individual preferences and requirements. If you're looking for a highly effective cooler with innovative features, such as a display and dual-tower design, the Thermalright is a strong contender. However, if ease of installation and a quieter operation are your priorities, the be quiet! option may be more suitable. With a slightly lower price, the Pure Rock Pro 3 provides excellent performance without the bells and whistles, making it an attractive choice for users who want reliable cooling without complexity.

