Noctua NH-L9i-17xx vs Thermalright Peerless Assassin 120 SE V3 CPU Air

Overview of Noctua NH-L9i-17xx and Thermalright Peerless Assassin 120 SE V3

The Noctua NH-L9i-17xx is priced at $49.95, while the Thermalright Peerless Assassin 120 SE V3 comes in at a lower price of $35.90, making it about 28% cheaper than Noctua's offering. Both coolers are designed for Intel processors, but they cater to different user needs and preferences. The NH-L9i-17xx is a low-profile cooler ideal for compact cases, while the Peerless Assassin is a larger, dual-tower cooler aimed at delivering higher performance.

Design and Build Quality

In terms of design, the Noctua NH-L9i-17xx features a compact size of only 37mm in height, making it an excellent choice for small form-factor builds. Its premium heatsink has received over 200 awards for its performance and design. The cooler comes in a distinctive brown color that is characteristic of Noctua products. On the other hand, the Thermalright Peerless Assassin 120 SE V3 boasts a dual-tower design with a size of 125x135x155mm. It features six heat pipes and a blackened anodic matte top sheet, giving it a modern and robust look that fits well in a variety of PC builds. Both coolers are built for durability, but the aesthetic appeal will depend on personal preference.

Cooling Performance

The Noctua NH-L9i-17xx is recognized for its effective cooling capabilities despite its low-profile design. It includes the renowned NF-A9x14 slim 92mm fan, which operates quietly and provides full cooling performance under load. In contrast, the Thermalright Peerless Assassin 120 SE V3 is designed for superior heat dissipation with its dual 120mm PWM fans capable of reaching up to 2000 RPM. This cooler is particularly suited for users looking for high-performance cooling in larger builds. If cooling performance is your primary concern, the Peerless Assassin offers a more robust solution.

Compatibility

Compatibility is a strong point for both coolers, though they target different setups. The Noctua NH-L9i-17xx is specifically designed for Intel LGA1700 and LGA1851 platforms, ensuring a perfect fit for compact builds. It also guarantees 100% RAM and PCIe compatibility on various motherboard sizes. Meanwhile, the Thermalright Peerless Assassin 120 SE V3 is versatile, supporting both Intel and AMD platforms, including LGA 1851, LGA 1700, AM4, and AM5. This broader compatibility makes it a better choice for users who might switch between different platforms in the future.

Noise Levels

When it comes to noise levels, the Noctua NH-L9i-17xx shines with its whisper-quiet operation, especially at idle, thanks to the Low-Noise Adaptor feature. This makes it an excellent choice for users who value a silent computing experience, such as those using home theater PCs. On the other hand, while the Thermalright Peerless Assassin 120 SE V3 can reach higher RPMs with its dual fans, it operates at a maximum noise level of 29.8 dB(A). While this is still relatively quiet, it may not be as silent as the Noctua cooler under low-load conditions.

Installation Process

The Noctua NH-L9i-17xx comes with the SecuFirm2 mounting system, which simplifies installation on Intel CPUs. It is designed to be straightforward, catering to users who may not have extensive experience with CPU cooler installations. The Thermalright Peerless Assassin 120 SE V3 also includes mounting accessories and installation instructions, but it requires the original backplate of the motherboard for AMD installations, which may complicate the process slightly for those switching from Intel to AMD. Overall, both coolers are user-friendly, but the NH-L9i-17xx may have a slight edge in ease of installation.

Price and Value

The Noctua NH-L9i-17xx is priced at $49.95, whereas the Thermalright Peerless Assassin 120 SE V3 is available for $35.90, making it approximately 28% cheaper. While Noctua is known for its premium quality and performance, the price difference could be a significant factor for budget-conscious consumers. The Thermalright cooler offers excellent value for those seeking effective cooling solutions at a lower price point. If budget is a primary consideration, the Peerless Assassin provides substantial savings without compromising too much on performance.

Which should you buy?

Choosing between the Noctua NH-L9i-17xx and the Thermalright Peerless Assassin 120 SE V3 ultimately depends on your specific needs and preferences. If you require a compact solution for a small form-factor build and value quiet operation, the NH-L9i-17xx is an excellent choice. However, if you are looking for a more powerful cooling solution that supports both Intel and AMD platforms at a lower price, the Peerless Assassin 120 SE V3 is the way to go. Consider your setup, budget, and performance needs when making your decision.