ARCTIC P12 Pro Reverse – 3 Pack – vs Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
Updated August 2026 — ARCTIC P12 Pro Reverse – 3 Pack – leads on airflow and compatibility.
The ARCTIC P12 Pro Reverse excels in airflow design and noise reduction, while the Thermalright Assassin X 120R SE V2 offers solid cooling performance at a lower price. Choose based on your specific needs.
Why ARCTIC P12 Pro Reverse – 3 Pack – is better
Airflow Design
Unique reversed airflow for aesthetic builds
Cooling Efficiency
Higher RPM range for better cooling
Noise Levels
Quieter operation during low-demand tasks
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Price
Lower price point at $16.59
Compatibility
Wider socket support for various CPUs
Build Quality
Effective heat dissipation with heat pipes
Overall score
Specifications
| Spec | ARCTIC P12 Pro Reverse – 3 Pack – | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× |
|---|---|---|
| Airflow | High static pressure | 66.17 CFM |
| Noise Level | Very quiet | ≤25.6 dB(A) |
| Bearing Type | Fluid dynamic | S-FDB |
| PWM Control | 500-3000 RPM | 1550 RPM |
| Material | Hydrodynamic | Aluminum/Copper |
Dimension comparison
Overview of the Products
The ARCTIC P12 Pro Reverse and the Thermalright Assassin X 120R SE V2 are both excellent cooling solutions but cater to slightly different needs. The ARCTIC P12 Pro Reverse is priced at $18.49, while the Thermalright Assassin X 120R SE V2 is available for $16.59, making it about 10% cheaper. Both products aim to enhance CPU cooling, but they come with distinct features that may appeal to different users.
Airflow Design
The ARCTIC P12 Pro Reverse incorporates a unique reversed airflow design, drawing air from the back side. This design is particularly beneficial for glass-fronted PC builds, where traditional fans might disrupt the aesthetic. In contrast, the Thermalright Assassin X 120R SE V2 utilizes a standard airflow configuration but offers a powerful cooling performance with its four 6mm heat pipes and a fan speed of 1550 RPM. If visual appeal in a glass case is important, the ARCTIC option excels in this area.
Cooling Efficiency
In terms of cooling efficiency, the ARCTIC P12 Pro Reverse offers high static pressure, designed to effectively penetrate dense radiators and mesh structures. Its adjustable speed ranges from 500 to 3000 RPM, which is significantly higher than the Thermalright’s maximum speed of 1550 RPM. This means that for heavy workloads or overclocking, the ARCTIC fan can provide superior cooling when needed, while the Thermalright is more focused on maintaining a quieter operation with a maximum noise level of 25.6 dB(A).
Noise Levels
Noise levels are a crucial factor for many PC builders. The ARCTIC P12 Pro Reverse is designed for quiet operation, utilizing a smooth-running fluid dynamic bearing that minimizes noise during operation. Although it doesn't specify a maximum noise level, its PWM control allows the fan to stop completely at less than 5% PWM, potentially offering silent operation during light tasks. The Thermalright Assassin X 120R SE V2, with its S-FDB bearing, boasts a maximum noise level of 25.6 dB(A), which is relatively quiet but may be noticeable under load. The ARCTIC model has the edge in quiet performance, particularly during low-demand scenarios.
Build Quality and Durability
Both products showcase quality construction, but they employ different materials. The ARCTIC P12 Pro Reverse features a hydrodynamic bearing that enhances longevity and reduces vibrations, contributing to quieter operation. The Thermalright Assassin X 120R SE V2, on the other hand, utilizes aluminum for its heat sink and has a copper base with four heat pipes, aiming for effective heat dissipation. While both units are built to last, the design of the ARCTIC fan gives it a slight advantage in terms of minimizing operational noise and maximizing durability.
Compatibility
When it comes to compatibility, the Thermalright Assassin X 120R SE V2 excels due to its wide socket support for both Intel and AMD platforms, including Intel's latest LGA1700 and AMD's AM5. This makes it a versatile choice for various setups. The ARCTIC P12 Pro Reverse, being a fan, is compatible with any setup that accepts 120mm fans, making it easy to integrate into most cases. However, the specific cooling requirements of the CPU will dictate which unit is more appropriate.
Price Comparison
The ARCTIC P12 Pro Reverse is priced at $18.49, while the Thermalright Assassin X 120R SE V2 is available for $16.59, making it about 10% cheaper. This price difference may influence budget-conscious consumers, especially when considering that both products offer unique features. The cost-effectiveness of the Thermalright unit might appeal to those looking for a solid cooler without breaking the bank, while the ARCTIC model justifies its higher price with advanced airflow technology and higher RPM capabilities.
Which should you buy?
Choosing between the ARCTIC P12 Pro Reverse and the Thermalright Assassin X 120R SE V2 depends on your specific needs. If you prioritize noise reduction and aesthetic appeal in a glass-fronted case, the ARCTIC P12 Pro Reverse is an excellent choice with its advanced airflow design and quiet operation. However, if you seek a cost-effective solution with solid cooling performance and broad compatibility, the Thermalright Assassin X 120R SE V2, at about 10% lower price, presents a compelling option. Ultimately, your decision should hinge on your cooling requirements, installation preferences, and budget.

