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ARCTIC P12 Slim PWM PST vs TR-Assassin X 120R SE V2 CPU Air Cooler

Updated August 2026The TR-Assassin X 120R SE V2 offers superior airflow and aesthetic appeal at a lower price, making it the better choice for most users.

The TR-Assassin X 120R SE V2 offers superior airflow and aesthetic appeal at a lower price, making it the better choice for most users.

Why ARCTIC P12 Slim PWM PST is better

Compact Size

ARCTIC P12's low installation height of 15 mm is ideal for small cases.

Low Noise

Operates at just 0.3 Sone, making it nearly silent.

PWM Control

Fan speed can be controlled from 300 to 2100 RPM.

Why TR-Assassin X 120R SE V2 CPU Air Cooler is better

Higher Airflow

TR-Assassin X has a maximum airflow of 66.17 CFM.

Lower Price

Priced at £14.49, it is more budget-friendly.

RGB Lighting

Includes static RGB lighting for aesthetic appeal.

Overall score

ARCTIC P12 Slim PWM PST
70
TR-Assassin X 120R SE V2 CPU Air Cooler
85

Specifications

SpecARCTIC P12 Slim PWM PSTTR-Assassin X 120R SE V2 CPU Air Cooler
Price£18.90£14.49
Airflow34.51 CFM66.17 CFM
Noise Level0.3 Sone25.6 dB(A)
Fan Speed300-2100 RPM1550 RPM
MaterialNot specifiedAluminum and Copper

Dimension comparison

ARCTIC P12 Slim PWM PSTTR-Assassin X 120R SE V2 CPU Air Cooler

Overview of the Products

The ARCTIC P12 Slim PWM PST is designed primarily for static pressure applications, while the TR-Assassin X 120R SE V2 CPU Air Cooler focuses on high performance and compatibility. Both cooling solutions cater to different needs within the realm of cooling systems, but they achieve their goals through distinct methodologies.

The ARCTIC P12 Slim PWM PST is priced at £18.90 and features a low installation height of just 15 mm, making it suitable for compact spaces. In contrast, the TR-Assassin X 120R SE V2 is more affordable at £14.49 and boasts a larger heatsink, designed to maximise airflow and enhance cooling performance.

Cooling Performance

In terms of cooling performance, the ARCTIC P12 Slim PWM PST is optimised for static pressure, which allows it to function effectively even against increased air resistance. This is particularly beneficial when installed on heat sinks and radiators. The fan speed ranges from 300 to 2100 RPM, providing a versatile cooling capability tailored to various conditions.

Conversely, the TR-Assassin X 120R SE V2 features a fan with a maximum speed of 1550 RPM, generating an airflow of 66.17 CFM. This airflow rate is significantly higher than that of the ARCTIC P12, which has a maximum airflow of 34.51 CFM. Thus, while the P12 may excel in specific high-resistance scenarios, the TR-Assassin X offers greater overall airflow, making it suitable for more demanding cooling tasks.

Noise Levels

When considering noise levels, the ARCTIC P12 Slim PWM PST operates at a noise level of just 0.3 Sone, which indicates a near-silent performance at lower RPMs. This feature is particularly appealing for users who prioritise quiet operation in their builds.

On the other hand, the TR-Assassin X 120R SE V2 has a rated noise level of 25.6 dB(A). Although this is a bit more noticeable than the ARCTIC P12, the higher airflow capacity may justify the slight increase in noise for users who require superior cooling performance. Thus, the choice of a quieter fan versus a more robust performer will depend on individual user preferences.

Installation Compatibility

Installation compatibility is a crucial factor when choosing a cooling solution. The ARCTIC P12 Slim PWM PST’s low profile of 15 mm makes it an excellent choice for small form factor cases, where space is at a premium. This slim design allows it to fit into tight spots without compromising on cooling efficiency.

In contrast, the TR-Assassin X 120R SE V2 measures 148 mm in height, making it suitable for most ATX cases. Its design ensures it does not obstruct RAM modules, which is a significant advantage for users with high-profile memory. However, users must consider their case size and layout when selecting between these two options.

Material and Build Quality

The materials used in cooling solutions significantly influence their performance and durability. The ARCTIC P12 Slim PWM PST utilises advanced fan design and upgraded engine technology, which contribute to its efficient cooling capabilities. However, specific material details are not provided.

On the other hand, the TR-Assassin X 120R SE V2 is constructed with a combination of aluminium and copper, which is known for its excellent thermal conductivity. This material choice enhances its heat dissipation capabilities, making it a robust option for high-performance cooling. The inclusion of a metal pressure plate further ensures better contact with the CPU, optimising heat transfer.

Aesthetic Appeal

Aesthetic appeal is often a consideration for PC builders. The ARCTIC P12 Slim PWM PST focuses on functionality, with a design that prioritises performance over visual flair. Its utilitarian approach may not attract users looking for striking aesthetics.

In contrast, the TR-Assassin X 120R SE V2 features static RGB lighting, which adds a vibrant element to a build. This aesthetic choice not only enhances the visual appeal but also allows users to customise their setups according to their preferences. Therefore, those prioritising aesthetics might lean towards the TR-Assassin X.

Price Comparison

Price is a significant factor when selecting cooling solutions. The ARCTIC P12 Slim PWM PST is priced at £18.90 for a pack of three fans, offering a solid value for those needing multiple units for comprehensive cooling.

In comparison, the TR-Assassin X 120R SE V2 is priced at £14.49, making it a more budget-friendly option for users seeking an effective air cooler without breaking the bank. The lower price point, combined with its features, gives the TR-Assassin X an edge for cost-conscious consumers.

Which should you buy?

Choosing between the ARCTIC P12 Slim PWM PST and the TR-Assassin X 120R SE V2 ultimately comes down to your specific needs. If you're looking for a compact, quiet cooling solution for tight spaces, the ARCTIC P12 is an excellent choice due to its slim profile and low noise levels. Conversely, if you need a more powerful cooler with higher airflow and a lower price point, the TR-Assassin X offers superior performance and aesthetic appeal with its RGB lighting. Assess your priorities—be it cooling performance, noise, installation compatibility, or price—to make the best decision for your setup.

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ARCTIC P12 Slim PWM PST vs TR-Assassin X 120R SE V2 CPU Air Cooler | versusfinder