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Scythe Fuma 3 CPU Air Cooler, Intel LGA1700, vs Thermalright Assassin X120 Refined SE CPU Air

Updated July 2026 — Scythe Fuma 3 CPU Air Cooler, Intel LGA1700, wins on width and height, Thermalright Assassin X120 Refined SE CPU Air wins on depth.

The Scythe Fuma 3 offers superior cooling performance and build quality, making it the better choice for high-demand users. The Thermalright Assassin X120 is a budget-friendly option with decent performance.

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

Cooling Performance

Fuma 3 is optimized for high TDP processors.

Build Quality

Fuma 3 has a premium dual-tower design.

Noise Levels

Fuma 3 operates more quietly under load.

Why Thermalright Assassin X120 Refined SE CPU Air is better

Price

Assassin X120 is significantly cheaper.

Size

Assassin X120 is more compact.

Compatibility

Assassin X120 supports a wider range of Intel sockets.

Overall score

Scythe Fuma 3 CPU Air Cooler, Intel LGA1700,
85
Thermalright Assassin X120 Refined SE CPU Air
70

Specifications

SpecScythe Fuma 3 CPU Air Cooler, Intel LGA1700,Thermalright Assassin X120 Refined SE CPU Air
Cooling TypeAirAir
Socket SupportLGA1700, AM5LGA1150, AM4
Fan RPMPWM, 0-1500PWM, 1550
Noise LevelLow25.6 dB(A)
Installation EaseEasyModerate

Dimension comparison

Scythe Fuma 3 CPU Air Cooler, Intel LGA1700,Thermalright Assassin X120 Refined SE CPU Air

Overview of the Scythe Fuma 3 and Thermalright Assassin X120 Refined SE

The Scythe Fuma 3 CPU Air Cooler is priced at $49.99, while the Thermalright Assassin X120 Refined SE is significantly cheaper at $17.90, making it about 64% less expensive. Both coolers are designed for various Intel and AMD sockets, making them versatile choices for different systems. The Fuma 3 is designed for high-performance cooling, suitable for powerful CPUs, while the Assassin X120 seeks to provide a balance between cooling efficiency and cost-effectiveness.

Design and Build Quality

The Scythe Fuma 3 features a dual-tower design with a striking black top cover, reflecting its premium build quality. It utilizes a sturdy radiator structure and a high-density aluminum fin array to enhance thermal dissipation. In contrast, the Thermalright Assassin X120 has a more compact design, measuring 125mm x 71mm x 148mm, and is made of aluminum with a simpler aesthetics. While the Fuma 3 stands at 154mm tall, suitable for most Mini ITX motherboards, the Assassin X120 is slightly shorter at 148mm, making it a better fit for medium-sized cases.

Cooling Performance

The cooling performance of the Scythe Fuma 3 is optimized for high TDP processors, including models like the Intel 13900K and AMD Ryzen 3700X. It features six 6mm heat pipes and uses two Kaze Flex II 120mm fans that operate in opposite directions to maximize airflow and static pressure. The Thermalright Assassin X120, on the other hand, has four heat pipes and a single TL-C12C PWM fan that operates at a maximum speed of 1550 RPM. While both coolers promise efficient heat dissipation, the Fuma 3 is geared towards more demanding cooling needs.

Noise Levels

One of the notable features of the Scythe Fuma 3 is its quiet operation. The Kaze Flex II fans are designed to maintain low noise levels while delivering high cooling performance. Although specific decibel levels are not provided, the engineering emphasizes silent operation. The Thermalright Assassin X120 also aims for quiet performance with its TL-C12C PWM fan, which operates at a noise level of 25.6 dB(A). While both coolers are designed for quiet operation, the Fuma 3 may provide a more silent experience under load due to its dual-fan setup.

Installation Process

The installation process for the Scythe Fuma 3 is designed to be user-friendly, thanks to its Premium HPMS V installation system. This makes it compatible with a wide range of Intel and AMD sockets, including LGA 1700 and AM5. The Thermalright Assassin X120 comes with metal fasteners suitable for various Intel and AMD platforms, making it versatile as well. While both coolers offer straightforward installation, the Scythe Fuma 3 is marketed as even easier to install, providing a more secure fit for demanding setups.

Compatibility

Both coolers are compatible with a range of CPU sockets, making them suitable for various builds. The Scythe Fuma 3 supports Intel LGA1700, LGA1151, and AMD AM5/Ryzen setups, whereas the Thermalright Assassin X120 supports a slightly broader variety of Intel sockets, including LGA 1150, 1151, 1155, 1200, and 1700, along with AMD AM4 and AM5. This makes the Assassin X120 a good choice for users with older Intel systems, while the Fuma 3 is ideal for newer, high-performance setups.

Brand Reputation

Scythe has a solid reputation in the cooling industry, particularly for their performance-oriented products. The Fuma 3 is a successor to the award-winning Fuma 2, indicating a strong lineage of effective cooling solutions. Thermalright, with over 20 years in the industry, is also well-regarded, particularly in the gaming and enthusiast markets. While both brands have their loyal followings, Scythe's focus on high-performance products may appeal more to users with demanding cooling needs.

Price Comparison

At $49.99, the Scythe Fuma 3 is significantly more expensive than the Thermalright Assassin X120, which is priced at $17.90. This price difference of approximately $32.09 may be justified for users seeking superior cooling performance and build quality. However, for budget-conscious consumers or those with less demanding cooling requirements, the Assassin X120 presents a compelling value proposition.

Which should you buy?

Choosing between the Scythe Fuma 3 and the Thermalright Assassin X120 Refined SE ultimately depends on your specific needs and budget. If you are looking for a high-performance cooler capable of handling powerful CPUs with low noise and easy installation, the Scythe Fuma 3 is the superior choice despite its higher price. However, if you are on a budget and need a reliable cooler for less demanding tasks, the Thermalright Assassin X120 offers excellent value without sacrificing essential features.