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ARCTIC Freezer 36 A-RGB - Single-Tower CPU Cooler vs Thermalright Assassin X 120R Digital ARGB Black

Updated August 2026 — ARCTIC Freezer 36 A-RGB - Single-Tower CPU Cooler leads on rgb features and aesthetics.

The ARCTIC Freezer 36 A-RGB offers superior cooling performance and advanced features, while the Thermalright Assassin X 120R provides excellent value for budget-conscious users.

Why ARCTIC Freezer 36 A-RGB - Single-Tower CPU Cooler is better

Cooling Performance

ARCTIC has better heat transfer with 4 heat pipes.

Installation Ease

ARCTIC features an innovative click installation system.

Aesthetics

ARCTIC has vibrant ARGB lighting with 12 LEDs.

Why Thermalright Assassin X 120R Digital ARGB Black is better

Price

Thermalright is $10.90 cheaper.

Compatibility

Thermalright supports more CPU sockets.

Noise Levels

Thermalright specifies a lower noise level.

Overall score

ARCTIC Freezer 36 A-RGB - Single-Tower CPU Cooler
85
Thermalright Assassin X 120R Digital ARGB Black
75

Specifications

SpecARCTIC Freezer 36 A-RGB - Single-Tower CPU CoolerThermalright Assassin X 120R Digital ARGB Black
Fan Speed2000 RPM2000 RPM
Noise LevelNot specified≤ 29.8 dB(A)
ARGB LightingYesYes
Thermal CompoundMX-6Not included
Socket SupportLGA1851, LGA1700LGA1851/1700, AM4/AM5

Dimension comparison

ARCTIC Freezer 36 A-RGB - Single-Tower CPU CoolerThermalright Assassin X 120R Digital ARGB Black

Overview of the ARCTIC Freezer 36 A-RGB and Thermalright Assassin X 120R

The ARCTIC Freezer 36 A-RGB is priced at $35.80, while the Thermalright Assassin X 120R comes in at $24.90, making it about 17% cheaper than the ARCTIC cooler. Both are single-tower CPU coolers designed to provide efficient heat dissipation, but their features and performance capabilities differ significantly. Understanding these differences can help you make an informed choice based on your specific needs and budget.

Design and Aesthetics

The ARCTIC Freezer 36 A-RGB boasts a sleek design with digital ARGB lighting that enhances its visual appeal. It features 12 A-RGB LEDs arranged along the fan hub, providing vibrant illumination. In contrast, the Thermalright Assassin X 120R also incorporates digital ARGB, but it stands out with its digital screen top cover that displays real-time CPU and GPU temperatures, adding a functional aesthetic twist. Both coolers are designed with a focus on airflow and heat dissipation, but the Assassin X's digital display offers a unique feature that may attract tech enthusiasts who appreciate monitoring their hardware performance.

Cooling Performance

In terms of cooling efficiency, the ARCTIC Freezer 36 A-RGB uses four heat pipes to ensure quick heat transfer to its heat sink, with two pressure-optimized 120 mm fans operating at speeds between 200–2000 RPM. This design is particularly effective for high-end CPUs, making it a strong contender for gamers and heavy users. On the other hand, the Thermalright Assassin X 120R features a single tower design with a high-speed fan capable of reaching 2000 RPM. This cooler also benefits from a good combination of heat dissipation through its aluminum fins and the PWM fan, ensuring effective cooling performance for various CPU loads.

Installation Ease

When it comes to installation, the ARCTIC Freezer 36 A-RGB features an innovative click installation system that simplifies the process of mounting the cooler and replacing its fans. This user-friendly design is particularly beneficial for those who may not have extensive experience with CPU cooler installation. The Thermalright Assassin X 120R, while also designed for easy installation, requires the original motherboard backplate for AMD installations. Both units cater to a wide range of Intel and AMD sockets, but the ARCTIC's installation system may give it an edge in convenience.

Compatibility

Compatibility is an essential factor to consider when choosing a CPU cooler. The ARCTIC Freezer 36 A-RGB supports Intel LGA1851 and LGA1700, making it suitable for modern high-performance CPUs. Meanwhile, the Thermalright Assassin X 120R offers a broader compatibility range, supporting both Intel (LGA 1851/1700/115X/1200) and AMD (AM4/AM5) sockets. This makes the Assassin X a versatile choice for users who may switch between different platforms, giving it an advantage in terms of future-proofing.

Noise Levels

Noise is a crucial consideration for many PC builders, especially those seeking a quieter gaming or working environment. The ARCTIC Freezer 36 A-RGB operates at a maximum noise level that is not specifically mentioned, but its fluid dynamic bearing fans are designed for quieter operation. The Thermalright Assassin X 120R, however, specifies an operating noise level of ≤ 29.8 dB(A), which indicates a relatively quiet performance under load. If low noise levels are a priority, the Assassin X may be more appealing.

Additional Features

The ARCTIC Freezer 36 A-RGB is equipped with a side-flow heat sink design that enhances airflow and cooling efficiency, making it particularly effective for cases with limited ventilation. Additionally, the cooler comes pre-applied with MX-6 thermal compound, ensuring optimal thermal transfer right out of the box. The Thermalright Assassin X 120R includes a digital screen that provides live feedback on CPU and GPU temperatures, a feature that can be particularly appealing for users who like to monitor their system's performance actively. Both products offer unique additional features that cater to different user preferences.

Pricing and Value

With the ARCTIC Freezer 36 A-RGB priced at $35.80 and the Thermalright Assassin X 120R at $24.90, the price difference is about $10.90. This substantial difference may influence the decision for budget-conscious consumers. While the ARCTIC cooler offers advanced features and potentially better performance for high-end CPUs, the Thermalright provides excellent value with its lower price and competitive features. For those prioritizing performance over cost, the ARCTIC may justify its higher price, whereas the Thermalright could be ideal for those seeking efficiency on a budget.

Which should you buy?

Ultimately, the choice between the ARCTIC Freezer 36 A-RGB and the Thermalright Assassin X 120R depends on your specific needs and preferences. If you are looking for a cooler with advanced aesthetics, excellent performance for high-end CPUs, and ease of installation, the ARCTIC Freezer 36 A-RGB is a strong choice. However, if you prefer a more budget-friendly option with a wider compatibility range and useful features like a digital display, the Thermalright Assassin X 120R is an excellent alternative. Consider your budget, system requirements, and personal preferences to make the best decision for your setup.