Noctua NT-H2 3.5g AM5 Edition vs Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler
Updated August 2026 — The Noctua NT-H2 excels in thermal management and ease of use, while the Thermalright Peerless Assassin offers superior cooling performance. Choose based on your specific needs.
The Noctua NT-H2 excels in thermal management and ease of use, while the Thermalright Peerless Assassin offers superior cooling performance. Choose based on your specific needs.
Why Noctua NT-H2 3.5g AM5 Edition is better
price
Noctua NT-H2 is cheaper at £12.11
ease of use
Noctua NT-H2 is easier to apply without spreading
long-term use
Noctua NT-H2 has a recommended usage time of up to 5 years
Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better
cooling performance
Thermalright Peerless Assassin has a maximum airflow of 66.17 CFM
design features
Thermalright Peerless Assassin includes ARGB lighting and dual fans
compatibility
Thermalright Peerless Assassin supports a wider range of CPU sockets
Overall score
Specifications
| Spec | Noctua NT-H2 3.5g AM5 Edition | Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler |
|---|---|---|
| Brand | Noctua | Thermalright |
| Type | Thermal Compound | Air Cooler |
| Price | £12.11 | £28.79 |
| Fan Count | N/A | 2 |
| Heat Pipes | N/A | 6 |
| Usage Time | 5 years | N/A |
Dimension comparison
Overview of Products
The Noctua NT-H2 3.5g AM5 Edition and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler cater to different needs within the cooling market. The Noctua thermal compound is priced at £12.11, while the Thermalright cooler is significantly higher at £28.79. This pricing difference reflects their distinct functionalities: one being a thermal paste and the other an air cooling solution.
Noctua's NT-H2 is a premium-grade thermal compound designed for optimal heat transfer from CPUs and GPUs. In contrast, the Thermalright Peerless Assassin is a comprehensive air cooler that includes two PWM fans, aiming to provide efficient cooling performance for various CPU sockets. Understanding these differences is crucial for choosing the right product for your setup.
Design and Build Quality
The design and build quality of the Noctua NT-H2 and Thermalright Peerless Assassin are tailored to their respective functions. The NT-H2 is a small 3.5g tube, easy to apply and clean, featuring a second-generation formula that enhances heat transfer. It is compact and intended for straightforward application, making it user-friendly for those less experienced in thermal paste application.
On the other hand, the Thermalright Peerless Assassin boasts a more intricate design with its dual-tower cooling structure and ARGB lighting effects. Weighing 0.97kg, it uses six heat pipes and a pure copper base for efficient heat dissipation. Its larger size and elaborate design are geared towards delivering maximum cooling performance, especially under demanding conditions.
Performance and Efficiency
In terms of performance, the Noctua NT-H2 is engineered for optimal thermal conductivity, ensuring that heat is effectively transferred away from the CPU or GPU. With a recommended usage time of up to five years, it promises long-term reliability and efficiency. This thermal compound can support around three to twenty applications depending on the CPU size, making it versatile for various setups.
Conversely, the Thermalright Peerless Assassin is designed for high-efficiency cooling, featuring a maximum airflow of 66.17 CFM and a noise level capped at 25.6 dB(A). This balance of airflow and quiet operation is ideal for gamers and professionals who require a cooler that performs well without being disruptive.
Compatibility
Compatibility is a significant factor for both products, as users must ensure their chosen cooling solution fits their systems. The Noctua NT-H2 is an AM5 edition, specifically designed to prevent thermal paste build-up in AMD Ryzen CPUs, making it an excellent choice for users with newer processors.
The Thermalright Peerless Assassin, however, supports a broader range of CPU sockets, including Intel's 115X, 1200, 1700, and various AMD sockets like AM4 and AM5. This versatility allows it to cater to a wider audience, which is beneficial for users who may upgrade their systems in the future.
Ease of Use
When it comes to ease of use, the Noctua NT-H2 excels with its straightforward application process. There is no need to spread the thermal paste before installing the heatsink, and it includes NA-CW1 cleaning wipes to ensure a mess-free application. This user-friendly approach makes it ideal for beginners or those looking for a quick solution.
In contrast, the installation of the Thermalright Peerless Assassin may require more effort due to its larger size and the need to ensure compatibility with various mounting brackets. While it comes with included metal fasteners for easy installation, users must be more diligent during setup compared to the Noctua NT-H2.
Brand Reputation
Brand reputation plays a role in the decision-making process for many consumers. Noctua is renowned for its high-quality thermal solutions, with a strong emphasis on performance and reliability. Their NT-H2 thermal compound is backed by positive reviews and a reputation for excellence in thermal management.
Thermalright, with over 20 years in the industry, also has a solid reputation, particularly in the enthusiast market. Their focus on innovative cooling solutions and a diverse product range positions them as a competitive player. Both brands have their strengths, but Noctua is often favoured for thermal compounds due to its long-standing expertise.
Price Comparison
Price is a crucial element in any purchasing decision, and there is a notable difference between the two products. The Noctua NT-H2 is priced at £12.11, making it an affordable option for those looking to enhance their thermal management without significant investment. It provides excellent value for users seeking a high-quality thermal compound.
On the other hand, the Thermalright Peerless Assassin is priced at £28.79, reflecting its dual-fan design and comprehensive cooling capabilities. While it is more expensive, the added features and performance justify the price for users who require robust cooling solutions for high-performance CPUs.
Which should you buy?
Choosing between the Noctua NT-H2 3.5g AM5 Edition and the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler ultimately depends on your specific needs. If you're looking for an effective thermal paste that ensures optimal heat transfer and ease of application, then the Noctua NT-H2 is the way to go. However, if you need a comprehensive air cooling solution for high-performance CPUs and prefer features like ARGB lighting and dual fans, then the Thermalright Peerless Assassin would be the better choice. Both products offer unique advantages, so your decision should align with your cooling requirements and budget.
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