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Noctua NH-L9x65 chromax.Black vs Thermalright AXP90 X47 Full Low Profile CPU Cooler,

Updated August 2026 — Noctua NH-L9x65 chromax.Black wins on height, Thermalright AXP90 X47 Full Low Profile CPU Cooler, wins on width and footprint.

The Noctua NH-L9x65 offers superior performance and aesthetics, while the Thermalright AXP90 X47 is a budget-friendly option. Choose based on your cooling needs and budget.

Why Noctua NH-L9x65 chromax.Black is better

Performance

Better cooling for higher thermal output CPUs

Aesthetics

Sleek all-black design

Noise Reduction

Advanced noise reduction technology

Why Thermalright AXP90 X47 Full Low Profile CPU Cooler, is better

Price

Significantly cheaper option

Compactness

Smaller height for tight spaces

Basic Needs

Adequate for less demanding CPUs

Overall score

Noctua NH-L9x65 chromax.Black
85
Thermalright AXP90 X47 Full Low Profile CPU Cooler,
70

Specifications

SpecNoctua NH-L9x65 chromax.BlackThermalright AXP90 X47 Full Low Profile CPU Cooler,
Fan TypeNF-A9x14TL-9015R
Heat PipesNone4
MaterialAluminumCopper
PWM SupportYesYes
Socket CompatibilityLGA1700, AM5LGA1700, AM4

Dimension comparison

Noctua NH-L9x65 chromax.BlackThermalright AXP90 X47 Full Low Profile CPU Cooler,

Overview of Low-Profile CPU Coolers

In the realm of low-profile CPU coolers, the Noctua NH-L9x65 chromax.Black and the Thermalright AXP90 X47 stand out as top contenders. Both products are designed for compact builds, but they cater to slightly different needs. The Noctua cooler is priced at $79.95, while the Thermalright model is significantly cheaper at $33.99, making it about 57% less expensive. Choosing the right cooler will depend on specific performance needs and design preferences.

Design and Aesthetics

When it comes to design, the Noctua NH-L9x65 chromax.Black offers a sleek all-black finish that appeals to users looking for a modern aesthetic in their builds. With a total height of 65mm, it balances compactness with style. On the other hand, the Thermalright AXP90 X47 boasts a height of only 47mm, making it ultra-compact and an excellent choice for extremely tight spaces. The Thermalright model also features a pure copper base, which not only enhances its performance but adds a unique visual appeal. Both coolers are designed to fit snugly into smaller cases, but the choice will depend on your preference for color and overall form factor.

Cooling Performance

Cooling performance is a critical factor when choosing a CPU cooler. The Noctua NH-L9x65 is equipped with a highly optimized NF-A9x14 slim 92mm fan, designed for ultra-quiet operation and effective cooling for CPUs with low to moderate heat dissipation. Conversely, the Thermalright AXP90 X47 utilizes a 92mm PWM fan and features four heat pipes to ensure excellent heat transfer. While both coolers are designed for compact environments, the Noctua may provide better performance for CPUs with slightly higher thermal output, whereas the Thermalright is tailored for those with less demanding cooling needs.

Installation and Compatibility

Installation ease is an essential consideration for many users. The Noctua NH-L9x65 comes with the SecuFirm2 mounting system, simplifying the installation process across various Intel and AMD sockets, including LGA1700 and AM5. The Thermalright AXP90 X47 similarly supports a wide range of Intel and AMD sockets, including LGA 1700 and AM4, making it versatile for different builds. Both coolers are designed to fit easily into Small Form Factor (SFF) systems, but the Noctua's mounting system may provide a slightly more user-friendly experience, especially for those new to building PCs.

Noise Levels

Noise levels are often a concern for users prioritizing quiet operation. The Noctua NH-L9x65 features a fan designed for low noise, aided by its PWM support and Low-Noise Adaptor, allowing for automatic speed control during operation. The Thermalright AXP90 X47 also boasts a low noise level, rated at 22.4 dB(A). While both coolers aim to maintain a quiet environment, the Noctua may have the edge in terms of noise reduction technology, making it a better choice for users seeking silence in their builds.

Price Comparison

The price difference between these two coolers is significant. The Noctua NH-L9x65 is priced at $79.95, whereas the Thermalright AXP90 X47 is available for just $33.99. This represents a price difference of about $45, with the Thermalright being approximately 57% less expensive. For budget-conscious buyers or those building entry-level systems, the Thermalright offers substantial savings without compromising essential functionality. However, those willing to invest more may find the premium features of the Noctua worth the higher price tag.

Target Audience

Both coolers appeal to different segments of the market. The Noctua NH-L9x65 is ideal for users looking for a high-performance cooler that excels in aesthetics and quiet operation, making it suitable for HTPCs and high-end SFF builds. Alternatively, the Thermalright AXP90 X47 targets users who require a cost-effective solution for basic cooling needs, such as gamers or office users who might not push their CPUs to the limit. Understanding the intended use can greatly influence which cooler is the better choice for your specific build.

Which should you buy?

Choosing between the Noctua NH-L9x65 chromax.Black and the Thermalright AXP90 X47 ultimately depends on your specific needs and budget. If you prioritize performance, aesthetics, and quiet operation, the Noctua is a worthy investment at $79.95. However, if you are looking for a more budget-friendly option that still delivers adequate cooling for less demanding CPUs, the Thermalright at $33.99 is an excellent choice. Consider your system's requirements and your budget to make the best decision for your build.