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Cooler Master i70C ARGB Low Profile CPU Air Cooler vs Thermalright Assassin King 120 SE White ARGB CPU

Updated August 2026 — Thermalright Assassin King 120 SE White ARGB CPU leads on noise level and compatibility.

The Cooler Master i70C offers a compact design and lower price, while the Thermalright Assassin King provides broader compatibility and superior cooling features. Choose based on your specific needs.

Why Cooler Master i70C ARGB Low Profile CPU Air Cooler is better

Price

Cooler Master i70C is cheaper at $19.49.

Size

Cooler Master i70C is shorter at 70mm.

Fan Speed

Cooler Master i70C has a higher max fan speed of 1800 RPM.

Why Thermalright Assassin King 120 SE White ARGB CPU is better

Heat Pipes

Thermalright has 5 heat pipes for better heat dissipation.

Compatibility

Thermalright supports more socket types.

Airflow

Thermalright offers higher airflow at 66.17 CFM.

Overall score

Cooler Master i70C ARGB Low Profile CPU Air Cooler
85
Thermalright Assassin King 120 SE White ARGB CPU
88

Specifications

SpecCooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Assassin King 120 SE White ARGB CPU
Price$19.49$19.82
Socket SupportLGA 1700/1851LGA 1700/1150/1151/1200/1851/AM4
Fan TypePWM ARGBPWM
Noise Level≤30 dB(A)≤25.6 dB(A)
AirflowMax airflow not specified66.17 CFM

Dimension comparison

Cooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Assassin King 120 SE White ARGB CPU

Overview of the Cooler Master i70C ARGB

The Cooler Master i70C ARGB Low Profile CPU Air Cooler is designed specifically for Intel LGA 1700 and 1851 sockets, featuring a compact design ideal for small form factor cases. Priced at $19.49, it aims to deliver efficient cooling with its innovative features. The cooler incorporates a copper insert base for optimal heat dissipation, making it suitable for CPUs with a thermal design power (TDP) of up to 95W.

The i70C is equipped with a 120mm PWM ARGB fan, which allows for adjustable speeds ranging from 650 to 1,800 RPM. This flexibility helps balance noise levels and airflow according to the user's needs. Its anodized black aluminum fins not only provide a sleek aesthetic but also contribute to its cooling efficiency. Additionally, the cooler’s design ensures easy installation on LGA 1700 and 1851 platforms, appealing to users looking for a low-profile solution without compromising performance.

Overview of the Thermalright Assassin King 120 SE

The Thermalright Assassin King 120 SE White ARGB CPU Air Cooler is priced slightly higher at $19.82, making it about 1.7% more expensive than the Cooler Master option. This cooler is compatible with a variety of sockets, including Intel LGA 1700, 1150, 1151, and 1851, as well as AMD AM4, making it a versatile choice for many builders.

The Assassin King's standout feature is its five heat pipes, which utilize the AGHP III technique to effectively manage heat dissipation. This cooler also features a PWM fan that operates at a maximum speed of 1,550 RPM, ensuring efficient cooling with a maximum airflow of 66.17 CFM while maintaining a noise level of under 25.6 dB(A). The cooler's aesthetic appeal is enhanced by its white design and colorful ARGB lighting, making it an attractive option for users concerned with visual presentation.

Performance Comparison

When evaluating cooling performance, both the Cooler Master i70C and the Thermalright Assassin King 120 SE have unique advantages. The i70C is optimized for lower power CPUs, supporting a TDP of up to 95W, which is suitable for many mainstream Intel processors. Its 120mm fan with adjustable speeds helps tailor cooling based on the system's demands, making it a solid choice for compact builds.

Conversely, the Assassin King 120 SE is designed for a broader range of CPUs, supporting a TDP that can handle more demanding processors, thanks to its five heat pipes. While the i70C's fan speed can reach higher RPMs, the Assassin King's efficient airflow and quiet operation can be appealing for users who prioritize noise levels alongside cooling performance. Ultimately, the performance difference may become evident depending on the specific CPU being used and the overall build configuration.

Installation and Compatibility

Installation ease is a crucial consideration for CPU coolers, especially for users building their systems at home. The Cooler Master i70C features redesigned brackets that simplify installation on LGA 1700 and 1851 platforms. Its low-profile design, standing at just 70mm tall, makes it highly compatible with compact cases, ensuring that users with space constraints can still achieve effective cooling.

The Thermalright Assassin King 120 SE, while slightly taller at 148mm, also includes metal fasteners for both Intel and AMD platforms, ensuring a secure fit during installation. This cooler supports a wider variety of socket types, which adds to its versatility. However, for users with limited vertical space in their cases, the i70C may present a more favorable option.

Aesthetic Appeal

In terms of design, the Cooler Master i70C boasts an anodized black aluminum finish that provides a minimalist yet modern look, appealing to users who prefer understated elegance. Its frosted blade design enhances the aRGB lighting, allowing for a customizable luminous effect that can add flair to any build.

On the other hand, the Thermalright Assassin King 120 SE features a striking white design paired with vibrant ARGB lighting. This cooler is particularly suited for users looking to create a visually stunning system with color-coordinated components. The aesthetic differences between the two coolers may influence a buyer’s decision based on personal preference and the overall theme of their build.

Brand Reputation and Reliability

Cooler Master has been a well-respected name in the PC cooling industry, known for its reliable products and innovation. The i70C's design emphasizes performance and quality, appealing to users looking for dependable cooling solutions for their Intel CPUs.

Thermalright, while perhaps less mainstream, has built a solid reputation over the past 20 years, particularly in the enthusiast market. The Assassin King 120 SE is a testament to their commitment to high-quality cooling solutions, featuring advanced technologies like the AGHP III technique for heat management. Users may choose based on brand preference, as both brands offer robust support and development in their respective product lines.

Which should you buy?

Choosing between the Cooler Master i70C and the Thermalright Assassin King 120 SE ultimately depends on your specific needs and preferences. If you’re looking for a low-profile cooler that excels in compact builds and offers a sleek aesthetic at a slightly lower price of $19.49, the Cooler Master i70C is a compelling choice.

However, if you require broader compatibility with various socket types and a design that stands out with its vibrant ARGB lighting, the Thermalright Assassin King 120 SE, priced at $19.82, could be worth the slight premium. Both coolers offer solid performance, so consider your case size, CPU requirements, and aesthetic preferences to make the best choice for your build.