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Noctua NH-U9S vs Thermalright AXP90 X36 Low Profile ITX CPU Cooler,

Updated August 2026 — Noctua NH-U9S leads on installation and warranty.

The Noctua NH-U9S offers superior cooling performance and quieter operation, making it the better choice for high-performance builds. However, the Thermalright AXP90 X36 is a budget-friendly option for less demanding systems.

Why Noctua NH-U9S is better

Cooling Performance

Noctua provides stronger cooling efficiency.

Noise Levels

Noctua is designed for ultra-quiet operation.

Brand Reputation

Noctua has a well-established reputation and warranty.

Why Thermalright AXP90 X36 Low Profile ITX CPU Cooler, is better

Price

Thermalright is significantly cheaper.

Size

Thermalright has a lower profile.

Installation

Thermalright offers straightforward installation.

Overall score

Noctua NH-U9S
85
Thermalright AXP90 X36 Low Profile ITX CPU Cooler,
65

Specifications

SpecNoctua NH-U9SThermalright AXP90 X36 Low Profile ITX CPU Cooler,
Cooling EfficiencyHighModerate
Noise ControlUltra-quietQuiet
Installation EaseEasyStraightforward
Warranty6 yearsN/A
Material QualityPremiumGood

Dimension comparison

Noctua NH-U9SThermalright AXP90 X36 Low Profile ITX CPU Cooler,

Price Comparison

When it comes to pricing, the Thermalright AXP90 X36 is significantly cheaper than the Noctua NH-U9S. The Thermalright model is priced at $20.39, while the Noctua commands a price of $69.95. This means that the Thermalright is approximately 71% less expensive than the Noctua. For budget-conscious users or those looking to build a cost-effective ITX setup, the Thermalright AXP90 X36 offers a compelling option without sacrificing too much in terms of cooling performance, especially for lower to mid-range systems.

Cooling Performance

In terms of cooling performance, the Noctua NH-U9S is designed with a compact single-tower structure that provides strong cooling efficiency. The NH-U9S features an NF-A9 92mm fan optimized for low noise and effective heat dissipation. In contrast, the Thermalright AXP90 X36, while also compact and low-profile at just 36mm in height, utilizes 4×6mm AGHP heat pipes to achieve its cooling capability. Users looking for robust cooling for high-performance CPUs may find the Noctua more suitable, especially for demanding applications, while the Thermalright can handle moderate workloads effectively.

Design and Aesthetics

The design of the Noctua NH-U9S reflects its premium positioning, featuring a sleek brown finish that is characteristic of Noctua products. Its compact single-tower design not only enhances cooling performance but also ensures compatibility with a variety of cases and components. On the other hand, the Thermalright AXP90 X36 offers a more utilitarian appearance with its all-metal platform and nickel plating for corrosion resistance. While the Noctua may appeal more to users who prioritize aesthetics in their builds, the Thermalright’s functional design is geared towards practicality, especially in space-constrained environments.

Compatibility

Compatibility is a critical factor when selecting a CPU cooler, and both products cater to different user needs. The Noctua NH-U9S is designed for use with Intel LGA1851, LGA1700, LGA1200, LGA115x, and AMD AM5 & AM4 sockets, making it versatile for various builds. Meanwhile, the Thermalright AXP90 X36 supports a slightly narrower range but still covers Intel's LGA1150, LGA1151, LGA1200, LGA1700, and AMD's AM4 and AM5 sockets. While both coolers provide good compatibility, users with specific motherboard configurations may find one cooler better suited to their needs than the other.

Noise Levels

Noise levels are an essential consideration for many users, especially those building silent systems. The Noctua NH-U9S is designed with a focus on quiet operation, utilizing an NF-A9 fan that can be controlled for optimal noise performance. While exact noise levels are not specified, it's noted for its ultra-quiet operation. The Thermalright AXP90 X36, on the other hand, has a maximum noise level of 22.4 DBA, which is relatively quiet but may not match the level of silence offered by Noctua's design. Enthusiasts who prioritize a silent computing environment may lean towards the NH-U9S for its reputation in noise management.

Installation Process

When it comes to installation, the Noctua NH-U9S is equipped with the SecuFirm2 mounting system, which simplifies the installation process across a variety of motherboard types. The inclusion of high-end NT-H1 thermal paste also adds convenience for users. Conversely, the Thermalright AXP90 X36's installation is designed to be straightforward with its back plate fastener and premium-quality build. However, the Noctua's comprehensive mounting system may provide an edge in ease of use, particularly for those who may be inexperienced at installing CPU coolers.

Brand Reputation

Brand reputation can significantly influence purchasing decisions. Noctua is well-regarded in the industry for its high-quality cooling solutions and customer service, often backed by a 6-year manufacturer's warranty. Thermalright, while also respected, may not have the same level of recognition as Noctua in the premium segment. Users who prioritize brand reliability and support might be more inclined to choose the Noctua NH-U9S based on its established reputation and warranty offerings.

Which should you buy?

Choosing between the Noctua NH-U9S and the Thermalright AXP90 X36 ultimately depends on your specific needs and budget. If you are looking for a high-performance CPU cooler with excellent cooling efficiency, low noise levels, and a solid brand reputation, the Noctua NH-U9S is the superior choice, despite its higher price of $69.95. However, if you are on a tighter budget or building a less demanding system, the Thermalright AXP90 X36, priced at just $20.39, makes an attractive option that still delivers decent cooling performance. Consider your priorities carefully, and select the cooler that best fits your build and usage scenario.