Thermalright Peerless Assassin 120 Black CPU Air Cooler vs Noctua NH-D15S chromax.Black
Updated August 2026 — The Noctua NH-D15S chromax.Black offers superior cooling performance and quieter operation, making it the better choice for premium users. However, the Thermalright Peerless Assassin 120 Black is a great budget option.
The Noctua NH-D15S chromax.Black offers superior cooling performance and quieter operation, making it the better choice for premium users. However, the Thermalright Peerless Assassin 120 Black is a great budget option.
Why Thermalright Peerless Assassin 120 Black CPU Air Cooler is better
affordable price
C$54.90 is significantly cheaper than C$149.95
good compatibility
supports a wide range of Intel and AMD sockets
effective cooling
dual fans provide decent airflow
Why Noctua NH-D15S chromax.Black is better
superior cooling
renowned NF-A15 fan offers better performance
whisper-quiet
designed for low noise operation
long warranty
6-year warranty provides peace of mind
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 Black CPU Air Cooler | Noctua NH-D15S chromax.Black |
|---|---|---|
| Max Airflow | 66.17 CFM | 140 CFM |
| Noise Level | 25.6 dB(A) | very low |
| Socket Support | Intel & AMD | Intel & AMD |
| Installation Ease | easy | very easy |
| Cooling Design | dual-tower | dual-tower |
Dimension comparison
Introduction to CPU Coolers
When it comes to keeping your CPU cool, the choice of cooler can significantly affect performance and longevity. In this comparison, we will look at two noteworthy models: the Thermalright Peerless Assassin 120 Black CPU Air Cooler and the Noctua NH-D15S chromax.Black. Each cooler brings unique features and benefits to the table, making them appealing for different types of users.
Design and Build Quality
The design and build quality of a CPU cooler can impact both aesthetics and functionality. The Thermalright Peerless Assassin 120 Black features a twin-tower design with a sleek black finish, utilising a full electroplating reflow welding process. This cooler measures 125(L)x135(W)x157(H)mm and boasts an effective heat dissipation area of 9600cm. In contrast, the Noctua NH-D15S chromax.Black sports an asymmetrical, single-fan design that effectively fits in most tower cases with a height of 160mm, ensuring 65mm RAM clearance. Both cooler designs are attractive, but the Noctua's award-winning aesthetics combined with its functional design may appeal to users looking for compatibility with various builds.
Cooling Performance
Cooling performance is critical for maintaining optimal CPU temperatures during intense workloads. The Thermalright Peerless Assassin 120 Black features dual 120mm PWM fans, with a maximum airflow of 66.17 CFM and a noise level of 25.6 dB(A). The inclusion of 6×6mm heat pipes supports effective heat transfer and dissipation. The Noctua NH-D15S chromax.Black is renowned for its cooling performance, which is supported by its NF-A15 140mm fan, known for whisper-quiet operation, even under load. This cooler's dual-tower design enhances cooling while maintaining low noise levels. While both coolers deliver excellent performance, the Noctua's established reputation in the market could provide users with more confidence in its cooling capabilities.
Compatibility
Compatibility is crucial when selecting a CPU cooler, as it must fit both the CPU socket and the case. The Thermalright Peerless Assassin 120 Black is compatible with a wide range of Intel and AMD sockets, including LGA1150, LGA1200, and AM4/AM5, ensuring versatility across various systems. The Noctua NH-D15S chromax.Black also supports multiple Intel and AMD sockets, such as LGA1700 and AM4, and its asymmetrical design ensures it does not block PCIe slots, making it suitable for most ATX and Micro-ATX motherboards. Both coolers offer excellent compatibility, but the Thermalright model's offset layout provides a distinct advantage for users with tight spaces.
Noise Levels
Noise levels are a significant factor for many users, especially those who prioritise a quiet computing experience. The Thermalright Peerless Assassin 120 Black operates at a maximum noise level of 25.6 dB(A), which is relatively silent but may still be audible under load. The Noctua NH-D15S chromax.Black is designed to be whisper-quiet at idle, making it suitable for users who prefer minimal noise. The Noctua's Low-Noise Adaptor enables further sound reduction, enhancing its appeal for silent PC builds. In this regard, the Noctua may have the edge due to its focus on quiet operation.
Price Point
The price of a CPU cooler can significantly influence purchasing decisions. The Thermalright Peerless Assassin 120 Black is priced at C$54.90, making it an affordable option for budget-conscious users. On the other hand, the Noctua NH-D15S chromax.Black comes at a premium price of C$149.95. While the Noctua offers exceptional performance and build quality, its higher price point may deter some users. Those looking for a reliable cooler without breaking the bank may find the Thermalright model to be a more attractive option.
Installation Process
The ease of installation can impact overall user satisfaction with a CPU cooler. The Thermalright Peerless Assassin 120 Black comes equipped with metal fasteners compatible with both Intel and AMD platforms, ensuring a straightforward installation. The Noctua NH-D15S chromax.Black includes the SecuFirm2 mounting system, which is known for its user-friendly installation process. Both coolers cater to users who may not have extensive building experience, but the Noctua's reputation for simplicity may give it an advantage in the installation department.
Warranty and Customer Support
Warranty and customer support can play a significant role in the long-term satisfaction of a product. The Thermalright Peerless Assassin 120 Black does not specify a warranty period in the provided information, making it essential for potential buyers to verify this detail. In contrast, the Noctua NH-D15S chromax.Black is backed by a generous 6-year manufacturer's warranty, underscoring Noctua's commitment to quality and customer satisfaction. This longer warranty can provide peace of mind for buyers, particularly for those investing in a premium product.
Which should you buy?
Choosing between the Thermalright Peerless Assassin 120 Black and the Noctua NH-D15S chromax.Black ultimately depends on your specific needs and budget. If you are looking for an affordable, effective cooler with good compatibility and cooling performance, the Thermalright model is a solid choice. However, if you are willing to invest in a premium product that offers superior cooling performance, whisper-quiet operation, and a longer warranty, the Noctua NH-D15S chromax.Black stands out as an excellent option. Each cooler has its strengths, so your decision should align with your priorities in terms of performance, noise levels, and budget.
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