Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes vs Thermalright Peerless Assassin 120 SE V2 CPU Cooler
Updated August 2026 — The Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance, making it the better choice for high-demand users, while the Assassin X 120R SE Plus is a budget-friendly option for quieter environments.
The Thermalright Peerless Assassin 120 SE V2 offers superior cooling performance, making it the better choice for high-demand users, while the Assassin X 120R SE Plus is a budget-friendly option for quieter environments.
Why Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes is better
lower price
C$25.59 vs C$54.90
quieter operation
25.6 dB(A) vs 29.5 dB(A)
smaller size
120x120x25mm vs 120x120x28mm
Why Thermalright Peerless Assassin 120 SE V2 CPU Cooler is better
better cooling
265W TDP vs unspecified
more heat pipes
6 pipes vs 4 pipes
higher airflow
88.19 CFM vs 66.17 CFM
Overall score
Specifications
| Spec | Thermalright Assassin X 120R SE Plus CPU Cooler - 4×6mm Heat Pipes | Thermalright Peerless Assassin 120 SE V2 CPU Cooler |
|---|---|---|
| Price | C$25.59 | C$54.90 |
| Noise Level | 25.6 dB(A) | 29.5 dB(A) |
| Heat Pipes | 4 | 6 |
| Airflow | 66.17 CFM | 88.19 CFM |
| TDP Rating | N/A | 265W |
Dimension comparison
Overview of the Thermalright Assassin X 120R SE Plus CPU Cooler
The Thermalright Assassin X 120R SE Plus CPU Cooler offers a strong balance of performance and value at C$25.59. This cooler features four 6mm heat pipes designed with Advanced Gravity Heat Pipe (AGHP) technology, which enhances thermal conductivity and allows for effective cooling in both vertical and horizontal orientations. With dual PWM fans that provide airflow of 66.17 CFM and noise levels capped at 25.6 dB(A), it caters to users seeking efficient cooling without excessive noise. Additionally, it supports a variety of Intel and AMD sockets, ensuring wide compatibility for different CPU setups.
Overview of the Thermalright Peerless Assassin 120 SE V2 CPU Cooler
The Thermalright Peerless Assassin 120 SE V2 CPU Cooler is a more premium option priced at C$54.90. This model is equipped with six 6mm heat pipes and employs AGHP GEN 5.0 technology, which further improves cooling efficiency. With dual thickened PWM fans that can reach up to 88.19 CFM with a maximum noise level of 29.5 dB(A), this cooler is designed for users who require superior cooling performance, especially under heavy loads. It also supports a range of Intel and AMD sockets, providing flexible installation options for various systems.
Cooling Performance Comparison
In terms of cooling performance, the Thermalright Peerless Assassin 120 SE V2 outperforms the Assassin X 120R SE Plus significantly. The Peerless Assassin features six heat pipes, compared to the four found in the Assassin X, resulting in a higher thermal dissipation capacity. This cooler is rated for a thermal design power (TDP) of up to 265 watts, making it suitable for overclocking and high-performance CPUs. In contrast, the Assassin X's specifications indicate robust cooling capabilities but do not specify a TDP rating, suggesting that while it is effective, it may not handle extreme scenarios as well as its counterpart.
Noise Levels and Fan Design
The Thermalright Assassin X 120R SE Plus operates at a quieter level with a maximum noise output of 25.6 dB(A), compared to the Peerless Assassin's 29.5 dB(A). This makes the Assassin X an attractive option for users prioritizing a quieter computing environment. Both coolers are equipped with PWM fans that adjust their speeds according to the thermal demands of the CPU; however, the Assassin X's fans are slightly smaller and operate at a lower maximum RPM of 1550, compared to the 1850 RPM of the Peerless Assassin. Thus, while the Peerless Assassin offers greater airflow, it does so at the cost of increased noise.
Size and Compatibility
The dimensions of the coolers play a crucial role in ensuring compatibility with various cases and systems. The Thermalright Assassin X 120R SE Plus measures 120x120x25mm for its fans, making it a compact option suitable for smaller builds. Conversely, the Peerless Assassin has a larger footprint with fans measuring 120x120x28mm. While both models support a wide range of Intel and AMD sockets, the slightly larger size of the Peerless Assassin might limit its installation in very tight spaces. Thus, users with compact systems may prefer the Assassin X for its smaller dimensions.
Build Quality and Materials
Both coolers feature high-quality construction, but the Thermalright Peerless Assassin 120 SE V2 has an advantage in materials. It utilizes a combination of aluminum fins and a pure copper base, which enhances heat transfer efficiency. The Assassin X also employs a blend of materials but specifies the use of industrial strength PBT + PC material. While both coolers boast durability, the Peerless Assassin's use of copper may provide better long-term performance under high thermal loads, which is essential for users pushing their systems to the limit.
Price Point Analysis
The price difference between the two coolers is significant, with the Thermalright Assassin X 120R SE Plus priced at C$25.59 and the Peerless Assassin at C$54.90. This price gap of C$29.31 reflects the differences in performance capabilities and cooling efficiency. For budget-conscious users or those with less demanding cooling needs, the Assassin X represents a cost-effective solution. However, for those seeking the best performance and willing to invest more, the Peerless Assassin offers enhanced cooling capabilities that justify the higher price.
Which should you buy?
Choosing between the Thermalright Assassin X 120R SE Plus and the Peerless Assassin 120 SE V2 ultimately depends on your specific needs and budget. If you are looking for an affordable cooler that performs well in quieter environments, the Assassin X is a solid choice. However, if you require superior cooling performance, especially for overclocking or high-intensity tasks, then the Peerless Assassin is worth the investment. Each cooler excels in different areas, making your decision largely dependent on how you plan to use your system.
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