ARCTIC P12 Pro PST - Powerful Premium Fan, vs Thermalright Assassin X 120R Digital ARGB Black
Updated July 2026 — ARCTIC P12 Pro PST - Powerful Premium Fan, wins on fan speed and depth, Thermalright Assassin X 120R Digital ARGB Black wins on height and air volume.
The ARCTIC P12 Pro offers excellent value and quiet performance, while the Thermalright Assassin X provides advanced features and better compatibility. Choose based on your specific needs.
Why ARCTIC P12 Pro PST - Powerful Premium Fan, is better
Price
ARCTIC P12 Pro is significantly cheaper.
Noise
ARCTIC P12 Pro operates quieter.
Simplicity
ARCTIC P12 Pro has a straightforward design.
Why Thermalright Assassin X 120R Digital ARGB Black is better
Features
Thermalright Assassin X has a digital screen.
Compatibility
Thermalright Assassin X supports more CPU sockets.
Cooling Performance
Thermalright Assassin X has a robust heat dissipation system.
Overall score
Specifications
| Spec | ARCTIC P12 Pro PST - Powerful Premium Fan, | Thermalright Assassin X 120R Digital ARGB Black |
|---|---|---|
| Price | $9.49 | $24.90 |
| Noise Level | ≤ 25 dB(A) | ≤ 29.8 dB(A) |
| Bearing Type | Fluid Dynamic | Aluminum |
| RPM Range | 600-3000 | 2000 |
| ARGB | No | Yes |
Dimension comparison
Overview of the Products
In this comparison, we're looking at the ARCTIC P12 Pro PST and the Thermalright Assassin X 120R Digital ARGB Black CPU Cooler. The ARCTIC P12 Pro is priced at $9.49, while the Thermalright Assassin X comes in at $24.90, making the latter about 17% more expensive. Both products target users looking for efficient cooling solutions, but they cater to slightly different needs and preferences.
Design and Build Quality
The design of the ARCTIC P12 Pro is focused on high-performance cooling with a sleek black finish, while the Thermalright Assassin X features a more elaborate design, incorporating a digital screen on its top cover. The ARCTIC fan uses a fluid dynamic bearing which minimizes noise and enhances longevity. In contrast, the Thermalright cooler utilizes a combination of aluminum material and a digital LCD panel for both aesthetics and functionality. This unique feature allows users to monitor CPU and GPU temperatures, making it a more versatile option for tech enthusiasts.
Cooling Performance
When it comes to cooling performance, the ARCTIC P12 Pro boasts a wide speed range of 600 to 3000 RPM, allowing for adaptable cooling based on system demands. Its high static pressure is designed to maintain efficient airflow even in restricted environments, such as dense radiators or mesh structures. Conversely, the Thermalright Assassin X has a maximum fan speed of 2000 RPM but offers a robust heat dissipation system with four heat pipes. While the ARCTIC fan can achieve higher RPMs, the Assassin X's design aims for effective cooling in a more compact footprint, making it suitable for many case builds.
Noise Levels
Noise levels are a critical factor for many users, and the ARCTIC P12 Pro excels here with its quiet operation due to its fluid dynamic bearing design, generating minimal noise even at high speeds. The product's design ensures that vibrations are reduced, making it ideal for quiet environments. The Thermalright Assassin X, while also designed to be relatively quiet with an operational noise level of ≤ 29.8 dB(A), isn't as optimized for silence as the ARCTIC. Users prioritizing a silent system may prefer the ARCTIC fan for its quieter performance.
Features and Functionality
The ARCTIC P12 Pro offers basic yet effective features focused on airflow and cooling efficiency. In comparison, the Thermalright Assassin X boasts extra functionality with its digital screen that provides real-time temperature and usage data for both the CPU and GPU. This feature can be particularly appealing to users who enjoy monitoring their system's performance and making adjustments as necessary. The ARCTIC fan, while effective, lacks this interactive element, which could be a deciding factor for tech-savvy users.
Compatibility
Both cooling solutions are designed for broad compatibility across different systems. The ARCTIC P12 Pro is a PWM fan, making it adaptable to various setups requiring 120 mm fans. The Thermalright Assassin X, however, supports multiple Intel and AMD sockets, including AM4/AM5 and several LGA configurations, making it a versatile choice for users building or upgrading their systems. If you are looking for a cooler that easily fits into a wide range of cases and setups, the Thermalright Assassin X offers greater compatibility options.
Price Comparison
The ARCTIC P12 Pro is priced at $9.49, making it a very budget-friendly option, especially for users who need reliable cooling without breaking the bank. The Thermalright Assassin X, at $24.90, is more than double the price of the ARCTIC fan. However, the additional features, enhanced cooling capabilities, and aesthetic appeal may justify this higher price for users who value those aspects. For those on a tight budget, the ARCTIC P12 Pro makes more sense, while the Thermalright is geared towards users willing to invest more for additional functionality.
Which should you buy?
Choosing between the ARCTIC P12 Pro and the Thermalright Assassin X largely depends on your specific needs. If you are looking for a cost-effective, quiet cooling solution that delivers solid performance, the ARCTIC P12 Pro at $9.49 is an excellent choice. However, if you want a cooler with enhanced features, like a digital display and wider compatibility with various CPU sockets, the Thermalright Assassin X is worth the investment at $24.90. Ultimately, your choice should reflect your priorities—whether they be budget, performance, or added functionality.

