Noctua NH-L9a-AM5 vs Thermalright AXP90 X36 Low Profile ITX CPU Cooler,
Updated August 2026 — Noctua NH-L9a-AM5 wins on fan size and height, Thermalright AXP90 X36 Low Profile ITX CPU Cooler, wins on noise level.
The Noctua NH-L9a-AM5 offers superior performance and quieter operation, making it the better choice for premium builds. The Thermalright AXP90 X36 is a solid budget option with decent features.
Why Noctua NH-L9a-AM5 is better
Cooling Performance
NH-L9a-AM5 has superior cooling capabilities.
Noise Levels
NH-L9a-AM5 operates quieter than AXP90 X36.
Thermal Paste
NH-L9a-AM5 includes high-quality thermal paste.
Why Thermalright AXP90 X36 Low Profile ITX CPU Cooler, is better
Price
AXP90 X36 is significantly cheaper.
Compatibility
AXP90 X36 supports a wider range of platforms.
Build Quality
AXP90 X36 has a robust all-metal design.
Overall score
Specifications
| Spec | Noctua NH-L9a-AM5 | Thermalright AXP90 X36 Low Profile ITX CPU Cooler, |
|---|---|---|
| Cooling Performance | Excellent | Good |
| Noise Level | Very Quiet | Quiet |
| Installation Ease | Easy | Moderate |
| Build Quality | Premium | Good |
| Price | $49.95 | $20.39 |
Dimension comparison
Overview of Noctua NH-L9a-AM5 and Thermalright AXP90 X36
The Noctua NH-L9a-AM5 is a premium low-profile CPU cooler priced at $49.95, while the Thermalright AXP90 X36 offers a more budget-friendly option at $20.39. The significant price difference of about 60% indicates a variation in features and performance capabilities between these two coolers, appealing to different user needs and preferences.
The Noctua cooler is tailored for AMD's AM5 platform, boasting a height of just 37mm, making it an excellent choice for compact builds. In contrast, the Thermalright cooler stands even lower at 36mm, also designed for AMD AM4 and AM5 sockets, as well as various Intel processors. This overview sets the stage for a deeper examination of their respective features, performance, and usability.
Design and Build Quality
Both the Noctua NH-L9a-AM5 and Thermalright AXP90 X36 showcase compact designs that cater to small form factor builds. The NH-L9a-AM5 features a proven premium heatsink and is recognized for its extensive awards and recommendations, indicating a high level of trust in its build quality.
On the other hand, the AXP90 X36 is constructed with a robust all-metal platform and includes a backplate fastener, enhancing its durability. While the Noctua cooler emphasizes a traditional yet appealing brown aesthetic, the Thermalright cooler opts for a more utilitarian design. Ultimately, the NH-L9a-AM5's reputation for quality may appeal more to enthusiasts, while the AXP90 X36's practical design suits budget-conscious users.
Cooling Performance
The NH-L9a-AM5 is renowned for its cooling capabilities, featuring the award-winning NF-A9x14 slim 92mm fan equipped with a Low-Noise Adaptor for automatic speed control. This technology promises high cooling performance under load while maintaining whisper-quiet operation at idle. It is especially effective for AMD Ryzen processors that produce moderate heat loads.
Conversely, the AXP90 X36 utilizes a 4×6mm AGHP heatpipe design, which contributes to its thermal efficiency. It operates at a noise level of 22.4 DBA, which is slightly noisier than the Noctua cooler but still within an acceptable range for most users. For those prioritizing silent operation and superior cooling performance, the NH-L9a-AM5 stands out, while the AXP90 X36 offers solid performance at a lower price point.
Compatibility
Compatibility is a crucial factor for CPU coolers, and both the NH-L9a-AM5 and AXP90 X36 are designed with this in mind. The Noctua cooler guarantees 100% RAM and PCIe compatibility across all ITX, Micro-ATX, and ATX AM5 motherboards, which is a significant advantage for users concerned about space and layout.
The Thermalright AXP90 X36 supports a broader range of platforms, including Intel LGA1150, 1151, 1200, and 1700, in addition to AMD AM4 and AM5. This versatility may appeal to users who plan to switch between different platforms. While both coolers have their strengths, the NH-L9a-AM5's specific design for AMD AM5 processors may provide a more seamless experience for users within that ecosystem.
Installation Process
When it comes to installation, the Noctua NH-L9a-AM5 comes with the SecuFirm2 mounting system, which is designed for easy setup on AMD AM5 processors. This user-friendly approach can save time and reduce frustration during installation, making it a favorable option for both novice and experienced builders.
In comparison, the AXP90 X36 features an all-metal platform that enhances its stability, but details on its installation process are less emphasized. While both coolers are aimed at users who might be building compact systems, the NH-L9a-AM5's clear focus on ease of installation gives it an edge for those who value convenience.
Thermal Paste Quality
Thermal paste is vital for heat transfer between the CPU and cooler, and the NH-L9a-AM5 includes high-end NT-H1 thermal paste. Known for its excellent thermal conductivity, this paste enhances the cooler's overall performance, especially under load.
The AXP90 X36 does not specify the quality of the thermal paste provided, which could be a consideration for users who prioritize optimal thermal management. The inclusion of a reputable thermal paste in the NH-L9a-AM5 package adds to its appeal for performance-oriented users, while the AXP90 X36 may require additional investment in high-quality paste for similar performance.
Noise Levels
Noise levels can significantly influence the user experience, especially in compact builds. The Noctua NH-L9a-AM5 is engineered for quiet operation, promising a whisper-quiet experience under idle conditions due to its advanced fan technology. This makes it an excellent choice for those who prioritize a peaceful computing environment.
The AXP90 X36 operates at a noise level of up to 22.4 DBA, which, while relatively quiet, may be noticeable in silent setups. For users who are particularly sensitive to noise or who work in quiet spaces, the NH-L9a-AM5's superior noise management is a compelling factor.
Which should you buy?
In conclusion, the choice between the Noctua NH-L9a-AM5 and the Thermalright AXP90 X36 ultimately depends on your specific needs and budget. If you're looking for a premium, high-performing cooler that excels in quiet operation, ease of installation, and thermal management, the NH-L9a-AM5 is worth the investment at $49.95. However, if you're on a tighter budget and require a versatile cooler that supports a variety of platforms at a significantly lower price of $20.39, the AXP90 X36 presents a solid option. Each cooler has its strengths, making them suitable for different types of users in the compact PC building community.

