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Cooler Master i70C ARGB Low Profile CPU Air Cooler vs Thermalright Peerless Assassin 120 Black CPU Air

Updated August 2026 — Thermalright Peerless Assassin 120 Black CPU Air leads on compatibility and cooling efficien.

The Cooler Master i70C ARGB is a budget-friendly option with a compact design, while the Thermalright Peerless Assassin offers superior cooling performance and compatibility. Choose based on your specific needs.

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

Price

i70C is significantly cheaper at $19.49

Size

i70C's low-profile design is ideal for compact builds

Noise

i70C operates quieter at lower RPMs

Why Thermalright Peerless Assassin 120 Black CPU Air is better

Cooling

Peerless Assassin supports up to 245W TDP

Compatibility

Peerless Assassin supports both Intel and AMD sockets

Performance

Peerless Assassin has dual fans for better airflow

Overall score

Cooler Master i70C ARGB Low Profile CPU Air Cooler
75
Thermalright Peerless Assassin 120 Black CPU Air
88

Specifications

SpecCooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Peerless Assassin 120 Black CPU Air
Fan TypePWMPWM
MaterialAluminum/CopperAluminum
Max RPM18001500
AirflowN/A66.17 CFM
Socket SupportLGA 1700/1851Multiple

Dimension comparison

Cooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Peerless Assassin 120 Black CPU Air

Overview of the Coolers

The Cooler Master i70C ARGB and the Thermalright Peerless Assassin 120 Black are two competitive options in the CPU cooler market. The i70C comes in at $19.49, while the Peerless Assassin is priced at $38.90, making the i70C about 50% cheaper than its counterpart. Each cooler boasts unique features tailored for different user needs, particularly regarding compatibility and cooling performance.

Design and Build Quality

The Cooler Master i70C ARGB features a compact design with anodized black aluminum fins and a copper insert base, ensuring effective heat dissipation for CPUs with a TDP of up to 95W. Its low-profile design, standing at only 70mm tall, makes it particularly suitable for small form factor cases. On the other hand, the Thermalright Peerless Assassin is significantly larger, measuring 125mm in length and 157mm in height. Its dual tower configuration is designed for optimal cooling performance, featuring six heat pipes and an aluminum heatsink cover. While the i70C prioritizes a minimalist aesthetic and low profile, the Peerless Assassin focuses on maximizing cooling through its larger size and more complex design.

Cooling Performance

In terms of cooling efficiency, the Thermalright Peerless Assassin has a TDP capacity of 245W, making it far superior for high-performance CPUs compared to the i70C’s 95W TDP. This means the Peerless Assassin can handle more demanding workloads without overheating. It employs dual PWM fans that can achieve a maximum airflow of 66.17 CFM, while the i70C uses a single 120mm PWM fan with adjustable speeds ranging from 650 to 1,800 RPM. For users looking to overclock or run resource-intensive applications, the Peerless Assassin is likely the better option.

Noise Levels

The Cooler Master i70C is designed for quiet operation with a noise output that can be managed by adjusting the fan speed. Its fan can operate at lower RPMs, which is conducive to a quieter environment. In contrast, the Thermalright Peerless Assassin has a maximum noise level of around 25.6 dB(A), which is relatively quiet for a dual-fan setup. However, users should expect slightly more noise during peak performance. Those sensitive to noise might find the i70C more appealing for low-noise builds.

Compatibility

The Cooler Master i70C is specifically designed for Intel LGA 1700 and 1851 sockets, providing straightforward installation on these platforms. Its simplified bracket system makes it user-friendly for those unfamiliar with cooler installations. Conversely, the Thermalright Peerless Assassin boasts extensive compatibility, supporting multiple Intel sockets (including LGA 1700 and 2066) as well as AMD AM4 and AM5 platforms. This wider compatibility makes the Peerless Assassin a versatile choice for users with different systems.

Aesthetic Appeal

Aesthetically, the Cooler Master i70C features a frosted blade design that enhances the RGB lighting effect, allowing for a customizable luminous appearance that many users find appealing. The minimalist black aluminum fins contribute to a sleek look, making it suitable for various builds. The Thermalright Peerless Assassin, with its dual towers and black painted finish, offers a robust yet elegant design. While both coolers are visually striking, the choice may come down to personal preference regarding RGB lighting versus a more traditional look.

Installation and Ease of Use

Installation can be a key factor for many consumers. The Cooler Master i70C presents an easy setup due to its redesigned brackets tailored for LGA 1700 and 1851 platforms. This makes it a suitable option for those who prefer a straightforward installation process. In contrast, the Thermalright Peerless Assassin, while offering more compatibility, may involve a bit more complexity due to its twin tower design and additional mounting requirements. Users should consider their comfort level with cooler installation when making a decision.

Which should you buy?

Choosing between the Cooler Master i70C ARGB and the Thermalright Peerless Assassin 120 Black ultimately depends on your specific needs. If you are looking for a budget-friendly, low-profile solution for Intel CPUs with a focus on aesthetics and quiet operation, the i70C is an excellent choice at $19.49. However, if you require superior cooling performance for high TDP CPUs and broader compatibility with both Intel and AMD platforms, the Thermalright Peerless Assassin at $38.90 offers significant advantages. Consider your system requirements and cooling needs before making a decision.