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Scythe Fuma 3 CPU Air Cooler, Intel LGA1700, vs Thermalright Assassin X 120R Digital ARGB Black

Updated August 2026 — Scythe Fuma 3 CPU Air Cooler, Intel LGA1700, leads on ease of install and build quality.

The Scythe Fuma 3 offers superior cooling performance and broader compatibility, making it the better choice for high TDP CPUs. The Thermalright Assassin X 120R is a budget-friendly option with decent performance.

Why Scythe Fuma 3 CPU Air Cooler, Intel LGA1700, is better

Cooling Performance

Designed for high TDP CPUs up to 13900K

Compatibility

Supports more Intel socket types

Installation

Easier installation process with HPMS V system

Why Thermalright Assassin X 120R Digital ARGB Black is better

Price

Significantly cheaper at $22.90

RGB Features

Includes customizable ARGB lighting

Size

Slightly shorter height at 151mm

Overall score

Scythe Fuma 3 CPU Air Cooler, Intel LGA1700,
85
Thermalright Assassin X 120R Digital ARGB Black
70

Specifications

SpecScythe Fuma 3 CPU Air Cooler, Intel LGA1700,Thermalright Assassin X 120R Digital ARGB Black
Socket SupportLGA1700, LGA1151, AM5LGA1700, AM4/AM5
Fan TypeKaze Flex IIPWM Fan
Cooling DesignDual TowerSingle Tower
Installation EaseEasyModerate
ARGB LightingNoYes

Dimension comparison

Scythe Fuma 3 CPU Air Cooler, Intel LGA1700,Thermalright Assassin X 120R Digital ARGB Black

Overview

When considering CPU coolers, the Scythe Fuma 3 and Thermalright Assassin X 120R present distinct options for users seeking efficient cooling solutions. The Scythe Fuma 3 is priced at $49.99, while the Thermalright Assassin X 120R is significantly cheaper at $22.90, making it about 54% less expensive. This price difference sets the stage for comparing their features, performance, and overall value.

Design and Build Quality

The Scythe Fuma 3 features a dual tower design with a black top cover, which not only enhances aesthetics but also maximizes thermal dissipation. Constructed with six 6mm heat pipes and a sturdy radiator structure, it promises high performance and durability. In contrast, the Thermalright Assassin X 120R also boasts a sleek design with a digital screen on the top cover but is slightly shorter at 151mm. While both coolers are crafted for optimal heat removal, the Fuma 3’s dual heatsink can offer superior cooling efficiency, particularly for high TDP processors.

Cooling Performance

In terms of cooling performance, the Scythe Fuma 3 is designed for high-performance CPUs with TDPs of up to 13900K, making it ideal for gaming rigs and workstations. Its dual fans rotate in opposite directions to enhance airflow while maintaining quiet operation. The Thermalright Assassin X 120R, with a fan speed of up to 2000RPM, also aims to deliver effective cooling but is better suited for moderate use. Users with demanding CPU requirements might find the Fuma 3's capabilities more beneficial, despite the lower RPM of the Assassin X.

Noise Levels

Noise levels play a crucial role in the overall user experience of CPU coolers. The Scythe Fuma 3 employs Kaze Flex II fans that are designed to operate quietly, even under load, providing stable airflow with minimal noise. Meanwhile, the Thermalright Assassin X 120R incorporates silicone corner pads around the fan, which helps to reduce noise during operation. However, users may find that the higher RPM of the Assassin X might lead to increased noise levels compared to the more silent operation of the Fuma 3.

Compatibility

Both coolers offer broad compatibility with various CPU sockets. The Scythe Fuma 3 is compatible with Intel LGA 1700, LGA 1151, and AMD AM5/Ryzen sockets, making it versatile for different builds. The Thermalright Assassin X 120R covers a similar range, supporting Intel LGA 1700 and AM4/AM5. While both options cater to contemporary CPU platforms, the Fuma 3's wider compatibility with a broader range of Intel sockets may appeal more to users with specific motherboard setups.

Installation Process

Ease of installation can significantly influence user satisfaction. The Scythe Fuma 3 features a premium HPMS V mounting system, making the installation process straightforward and secure across various CPU sockets. In comparison, the Thermalright Assassin X 120R's installation involves connecting the digital screen via a USB interface, which may add a layer of complexity for some users. Overall, the Fuma 3's user-friendly installation could be a decisive factor for those unfamiliar with CPU cooler setups.

Aesthetics and RGB Features

When it comes to aesthetics, both coolers have their unique appeal. The Scythe Fuma 3 opts for a more traditional, clean look with its black top cover. On the other hand, the Thermalright Assassin X 120R incorporates ARGB lighting, allowing for customizable color effects that can sync with the motherboard for a more visually engaging setup. For users who prioritize RGB features and aesthetics, the Assassin X might be the more attractive choice, whereas those seeking a more classic design may prefer the Fuma 3.

Which should you buy?

Choosing between the Scythe Fuma 3 and the Thermalright Assassin X 120R ultimately depends on your specific needs and budget. If you're looking for superior cooling performance, particularly for high TDP CPUs, the Scythe Fuma 3 at $49.99 is worth the investment. However, if budget constraints are a priority and you still want solid performance for moderate use, the Thermalright Assassin X 120R at $22.90 provides excellent value. Consider your system requirements and aesthetic preferences to make the best choice for your build.