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Cooler Master i70C ARGB Low Profile CPU Air Cooler vs Thermalright Peerless Assassin 120 SE V3 CPU Air

Updated August 2026 — Thermalright Peerless Assassin 120 SE V3 CPU Air leads on cooling and build quality.

The Thermalright Peerless Assassin 120 SE V3 offers superior cooling performance and compatibility, while the Cooler Master i70C is a budget-friendly option for compact builds. Choose based on your cooling needs.

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

Price

Cooler Master i70C is significantly cheaper.

Size

Cooler Master i70C has a low-profile design.

Aesthetics

Cooler Master i70C has a minimalist look.

Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better

Cooling

Thermalright Peerless Assassin 120 SE V3 has dual fans.

Compatibility

Thermalright Peerless Assassin 120 SE V3 supports more sockets.

Performance

Thermalright Peerless Assassin 120 SE V3 handles higher TDP.

Overall score

Cooler Master i70C ARGB Low Profile CPU Air Cooler
70
Thermalright Peerless Assassin 120 SE V3 CPU Air
85

Specifications

SpecCooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Peerless Assassin 120 SE V3 CPU Air
Fan RPM18002000
Fan TypePWMPWM
Heat Pipes16
MaterialAluminumAluminum
Socket SupportLGA 1700/1851LGA 1700/1851, AM4/AM5

Dimension comparison

Cooler Master i70C ARGB Low Profile CPU Air CoolerThermalright Peerless Assassin 120 SE V3 CPU Air

Introduction to the Coolers

The Cooler Master i70C ARGB Low Profile CPU Air Cooler and the Thermalright Peerless Assassin 120 SE V3 CPU Air Cooler are two distinct solutions for CPU cooling. While both serve the same primary purpose, they cater to different needs and preferences. Choosing between them depends largely on your specific requirements regarding performance, aesthetics, and compatibility.

Design and Aesthetics

The Cooler Master i70C boasts a minimalist design with anodized black aluminum fins, offering a sleek and modern look. Its 120mm PWM ARGB fan not only enhances cooling efficiency but also adds vibrant lighting effects to your setup. In contrast, the Thermalright Peerless Assassin 120 SE V3 features a more robust structure with a dual-tower design and dual fans, promoting superior heat dissipation. The blackened anodic matte finish and symmetrical aluminum fins give it a more industrial appearance. Ultimately, your choice may hinge on whether you prefer a minimalistic vibe or a more powerful aesthetic presence in your build.

Cooling Performance

When it comes to cooling performance, the Thermalright Peerless Assassin 120 SE V3 stands out with its dual 120mm fans capable of reaching speeds up to 2000 RPM. This dual-fan setup is designed for high air volume and pressure, making it effective for dissipating heat from high-performance CPUs. The Cooler Master i70C, while efficient for lower TDP CPUs, supports a maximum of 95W TDP and operates with a single fan reaching up to 1800 RPM. This means that for users with more demanding processors, the Thermalright cooler may yield better thermal performance under load.

Compatibility and Installation

The Cooler Master i70C is specifically designed for Intel's LGA 1700 and 1851 sockets, making it a strong choice for users with these platforms. It has a low-profile design, measuring 70mm tall, which is ideal for compact cases or All-in-One systems. On the other hand, the Thermalright Peerless Assassin 120 SE V3 offers broader compatibility, supporting both Intel (LGA 1700, 1851, and several older models) and AMD sockets (AM4, AM5). This versatility makes it suitable for a wider range of builds, although it may occupy more vertical space than the i70C.

Noise Levels

Noise levels are a crucial aspect of CPU coolers, especially for users prioritizing silent performance. The Cooler Master i70C operates with a dynamic PWM fan, balancing noise and airflow with a maximum RPM of 1800. While specific noise levels aren’t provided, this design aims for quieter operation. In contrast, the Thermalright Peerless Assassin 120 SE V3, with its dual fans, can generate more noise, particularly when ramping up to 2000 RPM. However, it features PWM functionality that adjusts fan speeds according to temperature, which can help minimize noise during lighter tasks.

Price Consideration

Price is a significant factor in deciding between these two CPU coolers. The Cooler Master i70C is priced at $19.49, making it about 46% cheaper than the Thermalright Peerless Assassin 120 SE V3, which retails for $35.90. For budget-conscious consumers or those with less demanding cooling needs, the i70C presents a compelling option without sacrificing essential features.

Brand Reputation and Reviews

Both Cooler Master and Thermalright have solid reputations within the PC cooling market. Cooler Master is known for its reliable performance and aesthetic appeal, particularly among gamers and PC builders. The i70C has garnered attention for its efficient design tailored specifically for Intel's latest sockets. Meanwhile, Thermalright has established itself as a brand focused on high-performance cooling solutions, and the Peerless Assassin 120 SE V3 is praised for its advanced cooling capabilities. The choice may ultimately depend on brand loyalty or past experiences with either manufacturer.

Which should you buy?

Choosing between the Cooler Master i70C and the Thermalright Peerless Assassin 120 SE V3 depends on your specific needs. If you seek a budget-friendly option with a sleek design, the Cooler Master i70C is a strong contender, especially for compact builds and moderate cooling requirements. However, for users with high-performance CPUs or those seeking superior cooling efficiency, the Thermalright Peerless Assassin 120 SE V3 justifies its higher price with its dual-fan configuration and broader compatibility. Assess your priorities, and let them guide your decision.