Noctua NH-U12S Redux vs Thermalright Assassin X 90 SE V2 CPU Cooler
Updated August 2026 — The Noctua NH-U12S Redux offers superior performance and build quality, while the Thermalright Assassin X 90 SE V2 is a budget-friendly alternative. Choose based on your priorities.
The Noctua NH-U12S Redux offers superior performance and build quality, while the Thermalright Assassin X 90 SE V2 is a budget-friendly alternative. Choose based on your priorities.
Why Noctua NH-U12S Redux is better
Cooling Performance
Noctua has better airflow and quieter operation.
Build Quality
Noctua is known for premium materials and reliability.
Noise Levels
Noctua operates nearly silently at idle.
Why Thermalright Assassin X 90 SE V2 CPU Cooler is better
Price
Thermalright is significantly cheaper.
Size
Thermalright is shorter, fitting more cases.
Installation
Thermalright is easy to install with included mounting plates.
Overall score
Specifications
| Spec | Noctua NH-U12S Redux | Thermalright Assassin X 90 SE V2 CPU Cooler |
|---|---|---|
| Price | C$62.95 | C$24.90 |
| Fan RPM | 1700 | 2200 |
| Airflow | 60 CFM | 32.77 CFM |
| Noise Level | 25 dB(A) | 23.85 dB(A) |
| Compatibility | LGA115x, AM4 | LGA1200, AM4 |
Dimension comparison
Price Comparison
The Noctua NH-U12S Redux is priced at C$62.95, while the Thermalright Assassin X 90 SE V2 CPU Cooler is significantly more affordable at C$24.90. This represents a substantial price difference of C$38.05, making the Thermalright cooler a budget-friendly option for those looking to save on cooling solutions. While the Noctua cooler is known for its premium quality and performance, the Thermalright offers a compelling alternative for users who prioritize cost-effectiveness without sacrificing basic cooling capabilities.
Cooling Performance
When it comes to cooling performance, the Noctua NH-U12S Redux is designed for efficient heat dissipation with its 120mm slim fan and renowned NF-P12 redux-1700 fan providing optimal airflow. This cooler is particularly effective under load, maintaining near-silent operation at idle, which is a significant advantage for users seeking a quiet PC. In contrast, the Thermalright Assassin X 90 SE V2 employs a 92mm PWM fan that operates at a maximum of 2200 RPM, producing an airflow of 32.77 CFM with a noise level of up to 23.85 dB(A). While it offers decent performance, it may not match the higher-end specifications of the Noctua.
Size and Compatibility
The Noctua NH-U12S Redux has a slim form factor of 158mm in height, which allows for excellent compatibility with various cases, RAM, and PCIe slots. This feature makes it a versatile choice for most tower cases and motherboards. On the other hand, the Thermalright Assassin X 90 SE V2 is shorter at 118mm and has dimensions of 94(L)x77(W)x118(H)mm, making it compatible with a wide range of chassis models. Both coolers are compatible with modern Intel and AMD CPU sockets, including LGA1200 and AM4, but the Noctua's design may provide a slight edge in terms of clearance and versatility.
Installation Ease
The Noctua NH-U12S Redux comes with the high-end NT-H1 thermal paste and the SecuFirm2 mounting system, which simplifies the installation process across various platforms, including Intel and AMD CPUs. This thoughtful design ensures that even novice builders can install it without hassle. Conversely, the Thermalright Assassin X 90 SE V2 also provides mounting plates for different CPU socket types but does not mention the inclusion of thermal paste. While it is straightforward to install, users may need to purchase thermal paste separately, adding to the overall cost and effort.
Build Quality and Brand Reputation
Noctua is renowned for its exceptional build quality and reliability in the cooling market. The NH-U12S Redux is an extension of the award-winning NH-U12S, ensuring that users receive a product backed by years of technological advancement. In contrast, Thermalright, although respected with over 20 years of experience, may not carry the same level of prestige as Noctua in the high-performance segment. The materials used in the Thermalright cooler, while durable, focus on cost-effectiveness, which may appeal to budget-conscious consumers but could raise concerns for those seeking longevity and premium performance.
Noise Levels
The Noctua NH-U12S Redux operates virtually silently at idle, with the NF-P12 fan ensuring full performance under load without generating excessive noise. This feature is particularly appealing for users who prioritise a quiet computing environment. The Thermalright Assassin X 90 SE V2, while also designed to be efficient, produces a maximum noise level of 23.85 dB(A), which may be noticeable in a quiet room. Although it is not excessively loud, users who are sensitive to noise might prefer the near-silent operation of the Noctua cooler, especially during intensive tasks.
Aesthetics
Aesthetically, the Noctua NH-U12S Redux maintains a sleek and professional appearance, commonly associated with the Noctua brand. Its design is understated yet sophisticated, appealing to users who appreciate a clean look in their builds. In comparison, the Thermalright Assassin X 90 SE V2 features a more industrial design, which may not appeal to all users. While both coolers are functional, the choice may come down to personal preference, with Noctua likely having the edge in terms of overall visual appeal.
Which should you buy?
In conclusion, the choice between the Noctua NH-U12S Redux and the Thermalright Assassin X 90 SE V2 boils down to your specific needs. If you're looking for a budget-friendly option that still offers decent cooling performance, the Thermalright at C$24.90 is hard to beat. However, if you value superior build quality, quieter operation, and better overall performance, the Noctua NH-U12S Redux is worth the higher investment at C$62.95. Ultimately, both coolers cater to different segments of the market, making it important to weigh your priorities before making a decision.
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