Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler vs Noctua NH-U12S
Updated August 2026 — The Thermalright Peerless Assassin offers great value for budget-conscious users, while the Noctua NH-U12S excels in performance and quiet operation. Choose based on your priorities.
The Thermalright Peerless Assassin offers great value for budget-conscious users, while the Noctua NH-U12S excels in performance and quiet operation. Choose based on your priorities.
Why Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler is better
price
Thermalright is priced at C$46.90, making it more affordable.
RGB lighting
Thermalright features ARGB lighting effects.
TDP rating
Thermalright can handle a TDP of up to 245W.
Why Noctua NH-U12S is better
warranty
Noctua offers a 6-year warranty.
noise level
Noctua operates ultra-quiet with a Low-Noise Adaptor.
build quality
Noctua is renowned for high-quality engineering.
Overall score
Specifications
| Spec | Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler | Noctua NH-U12S |
|---|---|---|
| Brand | Thermalright | Noctua |
| Price | C$46.90 | C$79.95 |
| Noise Level | ≤25.6 dB(A) | Ultra-quiet |
| Fan Speed | 1500 RPM | PWM |
| Socket Support | Intel/AMD | Intel/AMD |
Dimension comparison
Brand Overview
When comparing the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler and the Noctua NH-U12S, both brands have established a strong presence in the CPU cooling market. Thermalright, with over 20 years of experience, has gained popularity for its innovative cooling solutions. The Noctua brand is renowned for its high-quality products, with a solid reputation built over years of engineering excellence, particularly in silent operation and compatibility.
The Thermalright Peerless Assassin is priced at C$46.90, making it an affordable option for budget-conscious consumers. In contrast, the Noctua NH-U12S is priced at C$79.95, positioning it as a premium choice. This price difference reflects the varying market targeting strategies of the two brands, with Thermalright appealing to value-seekers while Noctua focuses on quality and performance.
Cooling Performance
The Thermalright Peerless Assassin 120 SE ARGB features a double tower cooling design and six heat pipes that enhance its thermal performance. This cooler can handle a thermal design power (TDP) of up to 245W, making it suitable for high-performance CPUs. The cooler's airflow is rated at 66.17 CFM with a noise level of ≤25.6 dB(A), ensuring quiet operation while effectively dissipating heat.
On the other hand, the Noctua NH-U12S employs a slim-tower design that combines effective cooling performance with compatibility for most cases, RAM, and PCIe slots. This cooler is equipped with a high-end NF-F12 120mm fan, which contributes to its efficient cooling capabilities. While specific TDP ratings are not provided, Noctua is known for its strong performance in cooling, especially for high-end processors.
Design and Aesthetics
In terms of aesthetics, the Thermalright Peerless Assassin boasts ARGB lighting effects, which can add a visually appealing element to any build. The cooler's dimensions are 125mm x 135mm x 155mm, allowing it to fit well in various cases while not obstructing RAM slots.
Conversely, the Noctua NH-U12S features a classic design known for its understated elegance. It does not overhang RAM or PCIe slots on most motherboards, making it a versatile option for users who prioritize compatibility over flashy aesthetics. The neutral colour scheme of the NH-U12S allows it to blend seamlessly with a wide range of builds.
Installation and Compatibility
The Thermalright Peerless Assassin comes with metal fasteners that support both Intel and AMD platforms, ensuring a versatile installation process. It includes specific mounting plates for various CPU socket types like Intel 115X/1200/1700 and AMD AM4, making it an accommodating choice for different setups.
In comparison, the Noctua NH-U12S features the SecuFirm2 mounting system, known for its ease of installation. This cooler supports a wide range of sockets, including Intel LGA1851, LGA1700, LGA1200, and LGA115x, as well as AMD AM5 and AM4. The included NT-H1 thermal paste further simplifies the installation process, ensuring optimal thermal conductivity from the get-go.
Noise Levels
Noise levels are a crucial factor in choosing a CPU cooler, especially for users who prioritise a quiet computing experience. The Thermalright Peerless Assassin operates at a maximum noise level of ≤25.6 dB(A), making it relatively quiet during operation, even under load. This low noise output is ideal for gamers and professionals who require a peaceful working environment.
On the other hand, the Noctua NH-U12S is equipped with a Low-Noise Adaptor that allows for automatic speed control, ensuring ultra-quiet operation. Noctua's design philosophy prioritises silent performance, and the NH-U12S is no exception, making it a favourite among users who value silence without compromising on cooling efficiency.
Warranty and Longevity
When it comes to warranties, the Noctua NH-U12S is backed by a 6-year manufacturer’s warranty, which is indicative of the brand's confidence in the durability and longevity of its products. This extended warranty can provide peace of mind for consumers investing in a premium cooler.
In contrast, the warranty information for the Thermalright Peerless Assassin is not specified, which could be a consideration for buyers who prefer assurance regarding product reliability. The absence of a stated warranty may lead some consumers to question the long-term performance and support of the Thermalright cooler compared to its Noctua counterpart.
Price and Value
The Thermalright Peerless Assassin is significantly more affordable at C$46.90, offering great value for users on a budget. Its competitive pricing combined with solid performance makes it an attractive option for entry-level and mid-range builds.
In contrast, the Noctua NH-U12S, priced at C$79.95, represents a higher investment but promises top-tier performance, build quality, and a reputation for quiet operation. For users willing to spend more for enhanced quality and reliability, the Noctua cooler may justify its price tag through superior performance and longevity.
Which should you buy?
Choosing between the Thermalright Peerless Assassin 120 SE ARGB CPU Air Cooler and the Noctua NH-U12S ultimately depends on your specific needs and preferences. If you are looking for an affordable cooler that offers decent performance with stylish ARGB lighting, the Thermalright Peerless Assassin is a commendable choice. However, if you prioritise top-notch cooling efficiency, ultra-quiet operation, and a robust warranty, the Noctua NH-U12S stands out as a premium option that justifies its higher price. Consider your budget, aesthetic preferences, and performance requirements to make the best decision for your system.
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