Thermalright Assassin X 120R SE V2 CPU Cooler, 4× vs Thermalrlght Peerless Assassin 120 SE CPU Air
Updated August 2026 — Thermalrlght Peerless Assassin 120 SE CPU Air leads on cooling and installation.
The Thermalright Peerless Assassin 120 SE offers superior cooling performance and advanced features, while the Assassin X 120R SE V2 is a budget-friendly option. Choose based on your cooling needs and budget.
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Price
Assassin X 120R SE V2 is significantly cheaper.
Size
Compact design fits in more cases.
Noise
S-FDB bearings may provide quieter operation.
Why Thermalrlght Peerless Assassin 120 SE CPU Air is better
Cooling
More heat pipes enhance cooling efficiency.
Design
Dual-tower configuration offers better aesthetics.
Performance
Advanced AGHP technology improves heat exchange.
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× | Thermalrlght Peerless Assassin 120 SE CPU Air |
|---|---|---|
| Max RPM | 1550 | 1550 |
| Airflow | 66.17 CFM | 66.17 CFM |
| Noise Level | 25.6 dB(A) | 25.6 dB(A) |
| Socket Support | Intel/AMD | Intel/AMD |
| Material | Aluminum/Copper | Aluminum/Copper |
Dimension comparison
Overview of the Thermalright Assassin X 120R SE V2 CPU Cooler
The Thermalright Assassin X 120R SE V2 CPU Cooler is priced at $16.59, making it a budget-friendly option for those looking for efficient cooling solutions. This cooler features four 6mm heat pipes and a 120mm RGB PWM fan that operates at a speed of 1550 RPM. The design includes a pure copper base and aluminum heatsink, ensuring effective heat dissipation. Additionally, the cooler's height of 148mm allows for compatibility with a wide range of cases without interfering with memory installation.
Overview of the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler
On the other hand, the Thermalrlght Peerless Assassin 120 SE CPU Air Cooler is priced at $32.90, which is about 98% higher than its counterpart. This cooler features six heat pipes and dual 120mm PWM fans, also running at 1550 RPM. Its design incorporates advanced AGHP technology and a dual-tower heatsink configuration, which enhances heat exchange and compatibility with larger graphics cards. The Peerless Assassin is particularly notable for its soldered heatsink base, ensuring stable performance and better aesthetics.
Cooling Performance: Assassin X 120R SE V2 vs. Peerless Assassin 120 SE
In terms of cooling performance, the Peerless Assassin 120 SE has a distinct advantage thanks to its six heat pipes compared to the Assassin X 120R SE V2's four. This additional heat pipe enhances its ability to conduct heat away from the CPU, potentially leading to lower temperatures under load. Both coolers feature fans with a maximum airflow of 66.17 CFM and a noise level of 25.6 dB(A), meaning they operate quietly while delivering similar airflow rates. However, the enhanced cooling capabilities of the Peerless model may make it more suitable for high-performance systems.
Design and Build Quality
The design of the Thermalright Assassin X 120R SE V2 is compact, with dimensions of 120x71x148mm. It is engineered to fit medium-sized cases without blocking RAM slots. In contrast, the Peerless Assassin 120 SE is slightly larger, measuring 125x135x155mm, which may pose compatibility issues in smaller cases. However, its dual-tower configuration and anodized brushed black top cover offer a more premium aesthetic. The materials used in both models, including aluminum and copper, emphasize durability and effective heat management, but the Peerless model's added premium features could appeal to users seeking a more sophisticated look.
Installation and Compatibility
Both coolers support a wide range of Intel and AMD sockets, providing compatibility with popular platforms like Intel's LGA1150/1151/1155/1156/1200/1700 and AMD's AM4/AM5. The Assassin X 120R SE V2 includes metal fasteners for easy installation, while the Peerless Assassin uses an SS2 install system for improved contact with the CPU. The installation requirements for the Peerless model also specify the need to utilize the original motherboard's backplate for AM4 and AM5 setups, which could complicate installation for some users. Overall, both products are designed for straightforward installation, but the choice may depend on specific motherboard configurations.
Noise Levels
When it comes to noise levels, both the Thermalright Assassin X 120R SE V2 and the Peerless Assassin 120 SE boast a maximum noise level of 25.6 dB(A). This means both coolers are designed to operate quietly, making them suitable for users who prioritize a silent computing environment. However, the Assassin X 120R SE V2’s focus on quiet performance via its S-FDB bearings may give it a slight edge in long-term use. Users looking for low-noise operation will find both options appealing, but the Assassin X may offer a more consistent quiet experience.
Pricing Considerations
The Thermalright Assassin X 120R SE V2 is priced at $16.59, making it an attractive option for budget-conscious users. In contrast, the Peerless Assassin 120 SE is available for $32.90, which is about 98% more expensive. This significant price difference could be a deciding factor for many buyers. While the Peerless model offers advanced features and potentially better cooling performance, those on a tighter budget may find the Assassin X 120R SE V2 to be a more sensible choice without sacrificing essential cooling capabilities.
Which should you buy?
Choosing between the Thermalright Assassin X 120R SE V2 and the Thermalrlght Peerless Assassin 120 SE ultimately depends on your specific needs and budget. If you are looking for a cost-effective solution that provides adequate cooling for a standard build, the Assassin X 120R SE V2 is an excellent choice at just $16.59. Conversely, if you require superior cooling performance and are willing to invest more, the Peerless Assassin 120 SE, priced at $32.90, offers enhanced features and aesthetic appeal. Consider your budget, system requirements, and aesthetic preferences to make the best decision for your build.

