Cooler Master i70C ARGB Low Profile CPU Air Cooler vs Thermalright Peerless Assassin 120 Mini Black CPU
Updated August 2026 — Cooler Master i70C ARGB Low Profile CPU Air Cooler wins on installation eas and noise level, Thermalright Peerless Assassin 120 Mini Black CPU wins on cooling performa and compatibility.
The Cooler Master i70C ARGB is a budget-friendly option with decent performance, while the Thermalright Peerless Assassin 120 Mini offers superior cooling capabilities for a higher price.
Why Cooler Master i70C ARGB Low Profile CPU Air Cooler is better
Price
i70C is significantly cheaper at $19.49
Noise
i70C operates quieter at higher RPM
Size
i70C is more compact for small cases
Why Thermalright Peerless Assassin 120 Mini Black CPU is better
Cooling
Peerless Assassin has advanced AGHP technology
Compatibility
Peerless Assassin supports both Intel and AMD sockets
Performance
Peerless Assassin handles higher TDP CPUs
Overall score
Specifications
| Spec | Cooler Master i70C ARGB Low Profile CPU Air Cooler | Thermalright Peerless Assassin 120 Mini Black CPU |
|---|---|---|
| Fan Speed | 650-1800 RPM | 1500 RPM |
| Air Flow | N/A | 66.87 CFM |
| Noise Level | ≤ 25 dB(A) | ≤ 25.6 dB(A) |
| Heat Pipes | 1 | 6 |
| Material | Aluminum/Copper | Aluminum/Copper |
Dimension comparison
Overview of Cooler Master i70C ARGB and Thermalright Peerless Assassin 120 Mini
The Cooler Master i70C ARGB is priced at $19.49, making it a budget-friendly option for low-profile CPU cooling, especially for Intel LGA 1700 and 1851 sockets. On the other hand, the Thermalright Peerless Assassin 120 Mini comes in at $34.39, which is about 77% more expensive. This price difference highlights a significant gap between the two products, suggesting that performance and features may vary considerably.
The i70C features a minimalist design with anodized black aluminum fins and a copper insert base, ensuring efficient heat dissipation. In contrast, the Peerless Assassin boasts advanced AGHP technology and six heat pipes, which may offer superior cooling performance for a wider range of CPUs, including both Intel and AMD sockets.
Design and Build Quality
The Cooler Master i70C ARGB showcases a compact and low-profile design, standing at 70mm tall, which is ideal for smaller chassis or All in One systems. Its black aluminum fins not only contribute to aesthetics but also enhance thermal performance through efficient airflow. The frosted blade design of the fan adds a vibrant touch with customizable ARGB lighting.
Meanwhile, the Thermalright Peerless Assassin 120 Mini has a more robust build, measuring 125mm in length and 135mm in height. Its six heat pipes utilize AGHP technology, which helps combat performance loss due to gravity, allowing for better heat dissipation. The fully blackened body, complemented by a CNC precision micro-engraved copper base, provides a sleek, modern look that many users might find appealing.
Cooling Performance
In terms of cooling performance, the Cooler Master i70C is designed for CPUs with a thermal design power (TDP) of up to 95 watts. Its 120mm PWM fan operates between 650 to 1,800 RPM, giving users flexibility in balancing noise and airflow depending on their cooling needs. The copper insert base contributes to efficient heat dissipation, making it suitable for moderate use cases.
On the other hand, the Thermalright Peerless Assassin 120 Mini is engineered for more demanding environments, supporting a wider range of TDP due to its six heat pipes. The PWM fan runs at a maximum speed of 1,500 RPM and delivers an air flow of 66.87 CFM, ensuring effective cooling even under load. This makes the Peerless Assassin a better fit for high-performance CPUs, especially for gaming or intensive tasks.
Noise Levels
The i70C is designed with noise levels in mind, particularly with its dynamic PWM fan that can adjust speeds to maintain a quieter operation. At 1,800 RPM, it achieves a balance between performance and noise, making it a good choice for users who prioritize a quiet environment.
The Thermalright Peerless Assassin 120 Mini, while efficient, operates at a noise level of up to 25.6 dB(A) at full speed. Though it is designed for performance, users may notice increased noise levels during heavy usage compared to the Cooler Master. For those valuing silence, the i70C may be more appealing.
Installation Process
Both coolers offer simplified installation processes with redesigned brackets, specifically for their respective platforms. The Cooler Master i70C is tailored for Intel LGA 1700 and 1851 sockets, ensuring a straightforward setup. Its low-profile design also aids in fitting into compact cases without hassle.
On the flip side, the Thermalright Peerless Assassin 120 Mini is compatible with a broader range of sockets, including various Intel and AMD options like AM4 and AM5. This flexibility is a significant advantage if you're planning to upgrade or switch components frequently. However, the slightly larger size may require more attention during installation, especially in tight spaces.
Brand Reputation and Support
Cooler Master has built a solid reputation in the PC cooling market, known for its reliability and effective cooling solutions. The i70C is no exception, offering a decent warranty and support options for users.
Thermalright has a long-standing history in the cooling sector, with over 20 years of experience. The Peerless Assassin combines this expertise with innovative technology, giving it a competitive edge. Users of Thermalright products often report satisfaction with both performance and customer support, making it a trustworthy choice for those who might need assistance.
Price Comparison
The Cooler Master i70C ARGB is priced at $19.49, making it an attractive option for those on a budget or looking for a basic cooling solution. In contrast, the Thermalright Peerless Assassin 120 Mini comes at $34.39, which is approximately 77% more than its competitor. This price disparity raises questions about the additional features and performance you may gain with the more expensive model.
While the i70C offers essential features that cater to moderate usage, the Peerless Assassin justifies its higher price with advanced cooling technologies and broader compatibility. Buyers should weigh the importance of these factors against their budget and cooling needs.
Which should you buy?
Choosing between the Cooler Master i70C ARGB and the Thermalright Peerless Assassin 120 Mini depends on your specific needs and budget. If you're looking for an affordable, low-profile CPU cooler primarily for Intel LGA 1700 or 1851 sockets, the i70C is an excellent choice at $19.49. It delivers decent performance while keeping noise levels low.
However, if you require superior cooling performance, compatibility with both Intel and AMD sockets, and don’t mind spending $34.39, the Thermalright Peerless Assassin 120 Mini is worth considering. Its advanced heat dissipation technology and robust build make it suitable for high-performance applications. Ultimately, your decision should reflect your specific cooling needs and budget constraints.

