Thermalright Assassin King 120 SE White ARGB CPU vs Thermalrlght Peerless Assassin 120 SE CPU Air
Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on cooling and build quality.
The Thermalright Assassin King 120 SE offers great value for budget-conscious users, while the Peerless Assassin 120 SE provides superior cooling performance. Choose based on your needs.
Why Thermalright Assassin King 120 SE White ARGB CPU is better
Price
Assassin King is significantly cheaper.
Design
Sleek white design with ARGB lighting.
Size
More compact dimensions for smaller cases.
Why Thermalrlght Peerless Assassin 120 SE CPU Air is better
Cooling
More heat pipes for better thermal performance.
Material
Includes copper for enhanced heat dissipation.
Fan Performance
Dual fans for improved airflow.
Overall score
Specifications
| Spec | Thermalright Assassin King 120 SE White ARGB CPU | Thermalrlght Peerless Assassin 120 SE CPU Air |
|---|---|---|
| Heat Pipes | 5 | 6 |
| Fan RPM | 1550 | 1550 |
| Airflow | 66.17 CFM | 66.17 CFM |
| Socket Support | Intel 115X/1200/1700, AMD AM4 | Intel LGA 1150/1151, AMD AM4/AM5 |
| Installation | Metal fasteners | SS2 install system |
Dimension comparison
Introduction to CPU Coolers
When it comes to cooling your CPU, the right cooler can make a significant difference in performance and efficiency. In this article, we will compare two notable models from Thermalright: the Thermalright Assassin King 120 SE White ARGB CPU Air Cooler and the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler. The Assassin King is priced at $19.82, while the Peerless Assassin comes in at $32.90. This price difference of about 66% reflects the varying features and performance capabilities of these two coolers.
Design and Aesthetics
The Thermalright Assassin King 120 SE features a sleek white design with ARGB lighting, making it visually appealing for those who want to enhance their computer's aesthetics. It has a compact size of 120(L)x73(W)x148(H)mm, which fits well in medium-sized cases. On the other hand, the Peerless Assassin 120 SE has a more robust profile, measuring 125(L)x135(W)x155(H)mm, and an anodized brushed black top cover that adds a premium feel. Both coolers are designed with aluminum heatsinks, but the Peerless model also incorporates copper in its construction, promising better heat dissipation.
Cooling Performance
In terms of cooling performance, the Thermalrlght Peerless Assassin 120 SE takes the lead with its six heat pipes, compared to the five in the Assassin King. This design provides improved thermal conductivity, enhancing heat management during intensive tasks. Both models are equipped with PWM fans that operate at a maximum speed of 1550 RPM, delivering an impressive airflow of 66.17 CFM. However, the additional heat pipe in the Peerless Assassin is likely to yield superior cooling efficiency, particularly for overclocked CPUs.
Noise Levels
Both the Assassin King and the Peerless Assassin maintain a noise level of 25.6 dB(A), ensuring a quiet computing experience. This indicates that users can expect a silent operation from either cooler, regardless of the workload. With similar fan specifications, neither cooler stands out in this category, making both suitable for users who prioritize a noise-free environment.
Compatibility
When it comes to compatibility, both coolers support a wide range of CPU sockets. The Thermalright Assassin King is compatible with Intel sockets 115X, 1200, 1700, and AMD's AM4. Similarly, the Peerless Assassin offers support for Intel LGA 1150, 1151, and AMD AM4/AM5. Notably, the Peerless Assassin requires the original motherboard's built-in backplate for installation on AM4 and AM5 systems, which is not included with the product. This could be a deciding factor for users based on their current hardware setup.
Ease of Installation
Installation processes for both coolers are designed to be user-friendly. The Assassin King provides metal fasteners for both Intel and AMD platforms, ensuring secure attachment. Meanwhile, the Peerless Assassin utilizes a SS2 install system with a metal pressure plate for optimal CPU contact, enhancing the thermal interface. Both coolers offer straightforward installation procedures, making them accessible to users of varying skill levels.
Price Comparison
The price difference between the two coolers is significant, with the Thermalright Assassin King priced at $19.82 and the Peerless Assassin at $32.90. This makes the Assassin King about 40% cheaper than its counterpart. For budget-conscious consumers looking for effective cooling without breaking the bank, the Assassin King presents a compelling option. However, the higher price of the Peerless Assassin may be justified by its additional features and potential for better thermal performance.
Which should you buy?
Ultimately, the choice between the Thermalright Assassin King 120 SE and the Thermalrlght Peerless Assassin 120 SE depends on your specific needs and budget. If you are looking for an economical cooler that offers solid performance and aesthetic appeal, the Assassin King is an excellent choice. However, if you prioritize superior cooling efficiency and are willing to invest a bit more, the Peerless Assassin may be the better option due to its additional heat pipes and robust design. Each cooler has its strengths, making them suitable for different types of users.

