Noctua NH-D15 G2, Dual Tower CPU Cooler, Standard vs Thermalright Peerless Assassin 120 SE V2 CPU
Updated August 2026 — Noctua NH-D15 G2, Dual Tower CPU Cooler, Standard leads on cooling and noise level.
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, Dual Tower CPU Cooler, Standard is better
Cooling Performance
Noctua has 8 heat pipes vs Thermalright's 6.
Noise Levels
Noctua operates nearly silently compared to Thermalright's 29.5 dBA.
Market Reputation
Noctua has a longstanding reputation for quality.
Why Thermalright Peerless Assassin 120 SE V2 CPU is better
Price
Thermalright is significantly cheaper.
Installation Ease
Both are easy, but Thermalright is simpler for beginners.
Aesthetics
Thermalright has a modern black finish.
Overall score
Specifications
| Spec | Noctua NH-D15 G2, Dual Tower CPU Cooler, Standard | Thermalright Peerless Assassin 120 SE V2 CPU |
|---|---|---|
| Cooling Efficiency | High | Moderate |
| Noise Level | Very Low | Low |
| Socket Compatibility | AMD AM5, Intel LGA1851/1700 | AMD AM4/AM5, Intel LGA1851/1700 |
| Fan RPM | Max 1500 | Max 1850 |
| Thermal Paste | NT-H2 | Not included |
Dimension comparison
Overview of the Noctua NH-D15 G2 and Thermalright Peerless Assassin 120 SE V2
The Noctua NH-D15 G2 is a premium CPU cooler priced at $174.95, while the Thermalright Peerless Assassin 120 SE V2 is significantly cheaper at $38.99, making it about 78% less expensive. This drastic price difference sets the stage for a comprehensive comparison of their performance, features, and overall value.
Cooling Performance
Cooling performance is crucial for maintaining optimal CPU temperatures, especially under high loads. The Noctua NH-D15 G2 features an advanced design with eight heat pipes and a larger surface area, which enhances its cooling capabilities. It also includes two NF-A14x25r G2 fans, optimized for quiet operation while delivering powerful airflow. In contrast, the Thermalright Peerless Assassin 120 SE V2 uses six heat pipes and dual 120mm PWM fans, running up to 1850 RPM, which also promises effective cooling. While both coolers are designed for high-performance tasks, the Noctua's superior heat dissipation technology may provide a slight edge in extreme conditions.
Compatibility
Compatibility can significantly impact the usability of a CPU cooler. The Noctua NH-D15 G2 supports a wide range of sockets, including AMD AM5 and Intel LGA1851/LGA1700, making it versatile for various builds. It also comes with necessary mounting hardware for easy installation. On the other hand, the Thermalright Peerless Assassin 120 SE V2 also supports AMD AM4/AM5 and Intel LGA1851/1700 platforms. Both coolers are thus excellent choices for current mainstream desktop builds, ensuring that users can rely on them regardless of their platform choice.
Design and Aesthetics
The design of a CPU cooler can play a role in the overall aesthetics of a build. The Noctua NH-D15 G2 sports a distinctive brown and beige color scheme that some users find appealing, while others may consider it less conventional. Its dual tower setup is designed not only for performance but also to complement high-end builds. Conversely, the Thermalright Peerless Assassin 120 SE V2 has a more modern look with a dual tower design and sleek black finish that could appeal more broadly to users seeking a contemporary aesthetic. Ultimately, the choice between them may come down to personal preference in visual style.
Noise Levels
Operating noise is a vital factor for many PC builders, especially those who value a quiet environment. The Noctua NH-D15 G2 is renowned for its nearly silent operation, particularly under low loads, thanks to its advanced fan technology and low-noise adaptors. This makes it an ideal choice for users who prioritize a quiet system. In comparison, the Thermalright Peerless Assassin 120 SE V2 has a maximum noise level of 29.5 dBA, which is also relatively quiet but may not match the whisper-quiet performance of the Noctua under lighter workloads. Users sensitive to noise might prefer the Noctua for its superior acoustic performance.
Installation Ease
Installation can be a critical factor, especially for less experienced builders. The Noctua NH-D15 G2 includes the SecuFirm2+ mounting system and comes with a Torx-based screwdriver, simplifying the installation process on various platforms. Similarly, the Thermalright Peerless Assassin 120 SE V2 is designed for straightforward installation, supporting multiple socket types without requiring extensive modifications. Both coolers prioritize user-friendliness, but the comprehensive support and included tools of the Noctua might make it easier for first-time builders.
Price Comparison
The Noctua NH-D15 G2 is priced at $174.95, while the Thermalright Peerless Assassin 120 SE V2 is available for $38.99. This means the Noctua is about 348% more expensive than the Thermalright model. While the Noctua may offer superior performance and quieter operation, the Thermalright provides an excellent budget option without sacrificing essential features. Users need to consider whether the performance benefits of the Noctua justify the higher price in their specific situations.
User Feedback and Market Reputation
User feedback and market reputation can provide insight into product reliability. The Noctua NH-D15 G2 has a longstanding reputation for quality and performance, frequently receiving accolades for its cooling efficiency and low noise levels. On the other hand, while the Thermalright Peerless Assassin 120 SE V2 is newer to the market, it has gained a positive reception for its performance at a lower price point. Ultimately, both coolers have solid market standings, but the Noctua's established reputation may give it an edge in trustworthiness among seasoned builders.
Which should you buy?
Choosing between the Noctua NH-D15 G2 and the Thermalright Peerless Assassin 120 SE V2 boils down to your specific needs and budget. If you prioritize top-tier cooling performance, quiet operation, and don't mind spending more, the Noctua is the clear choice. However, if you're looking for a cost-effective solution that still offers reliable cooling, the Thermalright is an excellent alternative. Ultimately, both coolers excel in their respective categories, making them worthy contenders in the CPU cooler market.

