CORSAIR RS120-R ARGB 120mm PWM Reverse Flow Fan - +5V ARGB Connections vs be quiet! Dark Rock Pro 5 Air CPU Cooler

Design and Aesthetics

The CORSAIR RS120-R ARGB 120mm PWM Reverse Flow Fan emphasises vibrant, customisable lighting with its reverse rotor design, while the be quiet! Dark Rock Pro 5 Air CPU Cooler focuses on a sleek, understated black aesthetic with a distinctive design heritage. The RS120-R’s reverse rotor ensures flawless visibility of its eight ARGB LEDs per fan, making it ideal for users prioritising RGB effects via compatible +5V ARGB motherboard connections. In contrast, the Dark Rock Pro 5 features a special black coating with ceramic particles, exuding a premium, stealthy look that complements high-end builds without flashy lighting. The Dark Rock’s design includes a detachable mesh top cover and a fully black mounting kit, reinforcing its elegant and functional appearance. For builders prioritising visual effect and custom lighting, the RS120-R offers more dynamic options, whereas the Dark Rock Pro 5 appeals to those seeking a sophisticated, low-profile style.

Cooling Performance and Airflow

The two products serve different cooling roles, with the CORSAIR RS120-R designed as a 120mm fan offering up to 65.8 CFM airflow and a static pressure of 2.81 mm H2O, making it suitable for radiator cooling and efficient airflow through obstructions. Its PWM control allows fan speeds up to 2,100 RPM, balancing quiet operation and powerful airflow. Meanwhile, the be quiet! Dark Rock Pro 5 is a high-end air CPU cooler incorporating seven copper heat pipes and two Silent Wings PWM fans. These fans deliver extremely high air pressure with advanced fluid-dynamic bearings for smooth, quiet operation. The Dark Rock Pro 5 has a speed switch offering Quiet Mode at 1,500 RPM and Performance Mode at 2,000 RPM, optimising cooling for either silence or peak CPU performance. Overall, for pure airflow and radiator compatibility, the RS120-R excels, but for direct CPU cooling with superior heat dissipation, the Dark Rock Pro 5’s integrated heat pipes and fans provide a more comprehensive solution.

Noise and Quiet Operation

Noise management is a key strength of the be quiet! Dark Rock Pro 5, featuring vibration-isolating fan mounts and advanced fluid-dynamic bearings that reduce turbulence and noise. Its Quiet Mode caps fan speeds at 1,500 RPM to prioritise silent operation during everyday tasks, while Performance Mode offers higher speeds with some noise trade-off. The CORSAIR RS120-R, while supporting PWM control to adjust speeds up to 2,100 RPM, does not emphasise noise reduction features as strongly. Its performance focus suggests that at higher speeds, it may be louder, especially when pushing air through radiators or other obstructions. Users seeking a cooler designed specifically to minimise noise will find the Dark Rock Pro 5 more suitable, whereas the RS120-R offers flexible fan speed control but lacks dedicated noise suppression elements.

Installation and Compatibility

Installation considerations differ markedly between the two. The CORSAIR RS120-R is a single 120mm fan intended to be mounted on radiators or system intake/exhaust points, requiring a compatible motherboard for ARGB control. Its availability in black or white gives some flexibility for matching PC builds. The be quiet! Dark Rock Pro 5, as a full air CPU cooler, provides a more complex installation process, albeit made simple by its elegant mounting concept. It includes a pre-installed mounting bridge and fixing screws, with a detachable mesh top cover for convenient assembly. Its design suits users needing a high-performance CPU cooler compatible with most modern sockets, while the RS120-R fan is more of an add-on or radiator fan replacement. In summary, the RS120-R is easier to install as a standalone fan, but the Dark Rock Pro 5 offers a comprehensive, well-thought-out installation system for CPU cooling.

Lighting and Visual Customisation

Lighting is a standout feature of the CORSAIR RS120-R, boasting eight individually addressable ARGB LEDs per fan and a reverse rotor design that ensures the lighting remains fully visible even when mounted as intake fans. This model requires a compatible motherboard with +5V ARGB connections to control and customise the lighting effects. In contrast, the be quiet! Dark Rock Pro 5 does not include lighting features, instead focusing on a matte black finish with ceramic particle coating for a subtle, professional look. Those prioritising visual customisation and dynamic RGB lighting will prefer the RS120-R, which can enhance the aesthetics of a PC build. Conversely, users favouring a minimalist or stealthy design with no lighting distractions will find the Dark Rock Pro 5 better suited to their style.

Price and Value for Money

There is a significant price difference between these two products, with the CORSAIR RS120-R priced at £24.99 and the be quiet! Dark Rock Pro 5 at £75.99. The RS120-R is therefore a budget-friendly option for those looking to improve airflow and add ARGB lighting to their systems without a large investment. Meanwhile, the Dark Rock Pro 5 commands a premium price reflecting its high-end materials, advanced cooling capabilities with seven copper heat pipes, and quiet operation technology. Buyers must consider their cooling needs and budget: the RS120-R offers excellent value as a single fan with lighting, while the Dark Rock Pro 5 justifies its higher price with superior CPU cooling performance and noise management.

Target Use and Audience

The CORSAIR RS120-R is best suited for PC enthusiasts who want to enhance their system airflow and visual appeal with customisable ARGB lighting. It functions well as a radiator fan or case fan due to its high static pressure and PWM control, appealing to users who want flexibility in fan speeds and lighting effects. On the other hand, the be quiet! Dark Rock Pro 5 targets users who require top-tier air CPU cooling, particularly those with overclocked or high-performance processors. Its seven copper heat pipes, dual Silent Wings fans, and noise-reducing design make it ideal for demanding setups prioritising thermal management and quiet operation over aesthetics. Essentially, the RS120-R fits well in builds where lighting and airflow customization are key, while the Dark Rock Pro 5 is designed for serious cooling enthusiasts and professionals.

Which should you buy?

Your choice depends on your primary cooling and aesthetic priorities. If you want a versatile, affordable 120mm fan with vibrant ARGB lighting and solid airflow performance (up to 65.8 CFM and 2.81 mm H2O static pressure), the CORSAIR RS120-R at £24.99 is an excellent pick. It works well as a system or radiator fan and suits builds where lighting customisation is important. However, if you require a comprehensive CPU cooling solution with low noise, high thermal performance, and premium build quality—including seven copper heat pipes and dual Silent Wings fans—the be quiet! Dark Rock Pro 5 at £75.99 is the superior choice. It offers advanced cooling modes and a sophisticated design for overclocked or high-demand CPUs. In summary, choose the RS120-R for lighting and airflow expansion, and the Dark Rock Pro 5 for high-performance, quiet air CPU cooling.