Thermalright Peerless Assassin 120 SE V3 CPU Air vs Thermalrlght Peerless Assassin 120 SE CPU Air
Updated August 2026 — Thermalright Peerless Assassin 120 SE V3 CPU Air leads on fan performance and cooling efficien.
The Thermalright Peerless Assassin 120 SE V3 offers superior cooling performance, while the Thermalrlght Peerless Assassin 120 SE is more budget-friendly.
Why Thermalright Peerless Assassin 120 SE V3 CPU Air is better
Cooling Performance
Higher maximum RPM and airflow
Build Quality
More robust construction
Noise Levels
Higher noise level but better cooling efficiency
Why Thermalrlght Peerless Assassin 120 SE CPU Air is better
Price
Lower cost
Noise Levels
Quieter operation
Compatibility
Similar compatibility but slightly better layout
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 SE V3 CPU Air | Thermalrlght Peerless Assassin 120 SE CPU Air |
|---|---|---|
| Heat Pipes | 6 | 6 |
| Noise Level | 29.8 dB(A) | 25.6 dB(A) |
| Material | Aluminium | Aluminum |
| Fan Type | PWM | PWM |
| Compatibility | Intel/AMD | Intel/AMD |
Dimension comparison
Introduction
When choosing a CPU cooler, performance and price are paramount. In this comparison, we will look at the Thermalright Peerless Assassin 120 SE V3 and the Thermalrlght Peerless Assassin 120 SE. The first notably features dual PWM fans with a higher maximum RPM, while the latter presents a slightly lower price. Understanding the differences between these two coolers will help you make an informed decision.
Design and Build Quality
Both coolers boast a solid design and excellent build quality, but they take different approaches. The Thermalright Peerless Assassin 120 SE V3 features a double-tower structure with a blackened anodic matte top sheet and six fully electroplated anti-oxidation heat pipes. This design allows for efficient heat dissipation. The Thermalrlght Peerless Assassin 120 SE, on the other hand, offers an anodized brushed black top cover and an asymmetric layout that enhances compatibility with graphics cards and motherboards. While both are well-built, the V3's more robust construction may provide slightly better durability.
Cooling Performance
Cooling performance is crucial for maintaining optimal CPU temperatures. The Thermalright Peerless Assassin 120 SE V3 excels with its dual PWM fans that can reach up to 2000 RPM, producing an air volume of 70.84 CFM. This high airflow capability is designed to keep temperatures in check, even under load. Conversely, the Thermalrlght Peerless Assassin 120 SE features dual fans that operate at a maximum of 1550 RPM, offering an air volume of 66.17 CFM. While both coolers employ AGHP technology with six heat pipes, the V3 has an edge in maximum airflow and noise levels, making it more effective for intense gaming or heavy workloads.
Noise Levels
Noise levels can significantly impact the user experience, especially in quiet environments. The Thermalright Peerless Assassin 120 SE V3 operates at a maximum noise level of 29.8 dB(A), which is relatively quiet given its high-performance capabilities. In contrast, the Thermalrlght Peerless Assassin 120 SE has a lower maximum noise level of 25.6 dB(A). This means that if noise is a critical factor for you, the Thermalrlght model may be preferable, especially for users who want a quieter operation during regular tasks or light gaming.
Compatibility
Compatibility is a vital consideration for any CPU cooler. Both coolers have a wide range of compatibility with Intel and AMD platforms. The Thermalright Peerless Assassin 120 SE V3 supports Intel LGA 1851/1700/1150/1151/1155/1156/1200 and AMD AM4/AM5 platforms. The Thermalrlght Peerless Assassin 120 SE offers similar compatibility, supporting Intel LGA 1150/1151/1155/1156/1200/1700 and AMD AM4/AM5. Both models require the original motherboard backplate for installation on AMD platforms. Hence, there’s no significant difference in compatibility, making either model a viable option for most users.
Price Point
When it comes to price, the Thermalrlght Peerless Assassin 120 SE is the more affordable option at $32.90, compared to the Thermalright Peerless Assassin 120 SE V3, which is priced at $35.90. This makes the Thermalrlght model about 17% cheaper. For budget-conscious users or those looking for good value for their money, the lower price of the Thermalrlght model could be a decisive factor, especially given that both products offer similar performance.
Installation Process
The installation processes for both coolers are designed to be user-friendly. The Thermalright Peerless Assassin 120 SE V3 comes with mounting accessories and provides a guide to facilitate installation. Similarly, the Thermalrlght Peerless Assassin 120 SE features an SS2 install system and metal pressure plate for better contact with the CPU. Both products require users to check case and motherboard compatibility, particularly for the AMD platform. Overall, both coolers are quite accessible for DIY builds, with no significant advantages in the installation process.
Overall Performance
In terms of overall performance, the Thermalright Peerless Assassin 120 SE V3 stands out with its higher fan speed and airflow capabilities, making it ideal for users seeking enhanced cooling during high-performance tasks. The Thermalrlght Peerless Assassin 120 SE, while slightly less powerful, still offers solid performance at a more attractive price point. Ultimately, the choice between these two coolers comes down to specific user needs—whether you prioritize higher cooling performance or a lower cost.
Which should you buy?
The decision between the Thermalright Peerless Assassin 120 SE V3 and the Thermalrlght Peerless Assassin 120 SE depends on your priorities. If you seek maximum cooling efficiency and are willing to spend a bit more, the Thermalright model would be the better choice. However, if you are budget-conscious and still want a solid cooling solution, the Thermalrlght model offers great value for its price. Both models are compatible with a wide range of platforms, making either a viable option for your cooling needs.

