Noctua NH-D15 G2 chromax.Black Premium Dual Tower vs Thermalright Peerless Assassin 120 SE V2 CPU
Updated August 2026 — Noctua NH-D15 G2 chromax.Black Premium Dual Tower leads on width and height.
The Noctua NH-D15 G2 offers superior cooling performance and quieter operation, while the Thermalright Peerless Assassin 120 SE V2 is a budget-friendly alternative. Choose based on your performance needs and budget.
Why Noctua NH-D15 G2 chromax.Black Premium Dual Tower is better
Cooling Performance
Noctua excels in quiet cooling efficiency.
Build Quality
Noctua has superior materials and construction.
Noise Levels
Noctua operates near-silent even under load.
Why Thermalright Peerless Assassin 120 SE V2 CPU is better
Price
Thermalright is significantly cheaper.
Compact Size
Thermalright fits in tighter spaces.
Basic Compatibility
Thermalright is easy to install for most users.
Overall score
Specifications
| Spec | Noctua NH-D15 G2 chromax.Black Premium Dual Tower | Thermalright Peerless Assassin 120 SE V2 CPU |
|---|---|---|
| Heat Pipes | 8 | 6 |
| Fan Speed | 1400 RPM | 1850 RPM |
| Noise Level | 24 dBA | 29.5 dBA |
| Socket Support | AM5/AM4/LGA1200 | AM4/AM5/LGA1700 |
| Thermal Paste | NT-H2 | Included |
Dimension comparison
Overview of the Noctua NH-D15 G2 and Thermalright Peerless Assassin 120 SE V2
The Noctua NH-D15 G2 chromax.Black is a premium CPU cooler priced at $184.95, while the Thermalright Peerless Assassin 120 SE V2 is a more budget-friendly option at $38.99, making it about 79% cheaper than the Noctua model. Both coolers are designed for high-performance cooling, but they cater to different market segments and needs.
The Noctua NH-D15 G2 is renowned for its superior quiet cooling performance, featuring advanced technology that includes eight heat pipes and large 140mm fans. In contrast, the Thermalright Peerless Assassin 120 SE V2 offers a more accessible price point while still boasting a dual tower design with six heat pipes, making it a compelling option for everyday users.
Design and Build Quality
When it comes to design, the Noctua NH-D15 G2 features an all-black chromax aesthetic that is both stylish and functional. This cooler is built for maximum efficiency, with a unique offset design that allows for 59mm RAM clearance in single fan mode. In comparison, the Thermalright Peerless Assassin 120 SE V2 has a dual tower structure and a more compact footprint, measuring 125mm in length and 155mm in height, which can fit comfortably in most cases.
The build quality of the Noctua is often regarded as superior, thanks to its robust construction and high-end materials. The Thermalright, while still well-built, does not quite match the premium feel of the Noctua. Both coolers, however, excel in thermal performance, making them excellent choices for cooling demanding systems.
Cooling Performance
Cooling performance is a critical consideration for CPU coolers, and the Noctua NH-D15 G2 excels in this area, thanks to its two state-of-the-art NF-A14x25r G2 fans which provide maximum efficiency under load. It is particularly suited for high-performance CPUs, ensuring that temperatures remain low even during intense tasks. In comparison, the Thermalright Peerless Assassin 120 SE V2, with its dual 120mm PWM fans that can reach up to 1850 RPM, also offers impressive cooling capabilities but may not reach the same levels of efficiency as the Noctua under extreme conditions.
The Noctua model is designed specifically for quiet operation, making it ideal for users who prioritize silence. The Thermalright, while effective, may produce slightly more noise due to its fan speed capabilities. Thus, if cooling performance is your primary concern, the Noctua NH-D15 G2 may be the better choice.
Compatibility
Compatibility is a significant factor when selecting a CPU cooler. The Noctua NH-D15 G2 supports a wide range of AMD AM5/AM4 and Intel LGA1851/LGA1700/LGA1200 processors, making it an excellent choice for enthusiasts building high-end systems. It includes a Torx-based SecuFirm2+ mounting system for easy installation across various platforms.
On the other hand, the Thermalright Peerless Assassin 120 SE V2 also supports both AMD AM4/AM5 and Intel LGA1851/1700 sockets, making it a practical choice for most modern desktop builds. However, its simpler mounting system may not offer the same level of flexibility as Noctua's advanced installation features. Both models provide broad compatibility, but the Noctua’s superior mounting system gives it an edge for users who may switch between different CPUs.
Noise Levels
When it comes to noise levels, the Noctua NH-D15 G2 is designed for near-silent operation. The advanced NF-A14x25r G2 fans use a speed-offset feature and Low-Noise Adaptors, ensuring that the cooler operates quietly even at high loads. This makes it a favorite among gamers and professionals who require a quieter computing environment.
Conversely, the Thermalright Peerless Assassin 120 SE V2, while it has dual 120mm PWM fans, may produce more noise due to the higher RPMs it can achieve (up to 1850 RPM). Users looking for a silent operation might prefer the Noctua, as it effectively balances cooling performance with minimal noise output. Thus, if noise level is a crucial factor for you, the NH-D15 G2 stands out as the more favorable option.
Installation Process
Installation can significantly affect user experience, and the Noctua NH-D15 G2 is designed for ease of use. It comes with a comprehensive mounting kit that is compatible with modern sockets and includes a NM-SD1 screwdriver, making the setup process straightforward. The detailed instructions ensure that even novice builders can install it without hassle.
The Thermalright Peerless Assassin 120 SE V2 also offers an easy installation process, though it may lack the comprehensive instructions and tools that come with the Noctua. Users may find that the Noctua's attention to detail in the installation process enhances the overall experience significantly, making it a preferable choice for those who value user-friendly designs.
Price Point
Price is a decisive factor when comparing these two coolers. The Noctua NH-D15 G2 is priced at $184.95, which places it in the premium segment of CPU coolers. Its high cost is justified by its exceptional performance, build quality, and quiet operation. In contrast, the Thermalright Peerless Assassin 120 SE V2 is priced at just $38.99, making it an attractive option for budget-conscious consumers who still want reliable cooling performance.
Considering the price difference of about $145.96, the Thermalright offers considerable savings for users who need a solid cooler without the premium features of the Noctua. If budget constraints are a primary concern, the Thermalright is a compelling choice that does not compromise on essential cooling capabilities.
Which should you buy?
Ultimately, the choice between the Noctua NH-D15 G2 and the Thermalright Peerless Assassin 120 SE V2 boils down to your specific needs. If you are an enthusiast seeking the best cooling performance, quiet operation, and superior build quality, the Noctua NH-D15 G2 is worth the investment. However, if you're looking for a budget-friendly cooler that still provides reliable performance for everyday use, the Thermalright Peerless Assassin 120 SE V2 is an excellent alternative. Your decision should reflect your priorities, whether they lean towards premium features or cost-effectiveness.

