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Thermalright Peerless Assassin 120 CPU Air Cooler vs S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43

Updated August 2026The Thermalright Peerless Assassin 120 offers superior cooling performance and compatibility, making it the better choice for high-performance systems. The S-Union fan is a budget-friendly option for specific laptop models.

The Thermalright Peerless Assassin 120 offers superior cooling performance and compatibility, making it the better choice for high-performance systems. The S-Union fan is a budget-friendly option for specific laptop models.

Why Thermalright Peerless Assassin 120 CPU Air Cooler is better

Cooling Performance

Higher TDP rating of 245W compared to S-Union.

Compatibility

Supports a wide range of Intel and AMD sockets.

Design

Dual-tower design enhances heat dissipation.

Why S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43 is better

Price

More affordable at C$29.99.

Warranty

Offers an 18-month warranty.

Ease of Installation

Designed specifically for Acer Nitro laptops.

Overall score

Thermalright Peerless Assassin 120 CPU Air Cooler
85
S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43
65

Specifications

SpecThermalright Peerless Assassin 120 CPU Air CoolerS-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43
TDP Rating245WN/A
Fan Speed1500 RPMN/A
Noise Level≤25.6 dB(A)N/A
Socket SupportIntel/AMDAcer Nitro
WarrantyN/A18 months

Dimension comparison

Thermalright Peerless Assassin 120 CPU Air CoolerS-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43

Overview of the Products

In this comparison, we will examine the Thermalright Peerless Assassin 120 CPU Air Cooler and the S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43. The Thermalright cooler is priced at C$51.39, while the S-Union fan replacement costs C$29.99. Each product targets different cooling needs—one is designed for high-performance CPU cooling, while the other serves as a replacement for laptop fans. Understanding their specifications and features will help you decide which fits your requirements better.

Design and Build Quality

The design of the Thermalright Peerless Assassin 120 is notable for its dual-tower structure and a unique offset asymmetric layout. This setup not only facilitates effective heat dissipation, boasting an impressive area of 9600cm², but also allows for easy installation without interfering with the first graphics card slot. Conversely, the S-Union fan is specifically designed for compatibility with Acer Nitro 5 and Nitro 7 models, ensuring it fits snugly in your laptop. While the S-Union fan's design is straightforward and functional, it does not offer the advanced cooling capabilities found in the Thermalright unit.

Cooling Performance

When it comes to cooling performance, the Thermalright Peerless Assassin 120 stands out with a TDP rating of 245W, making it suitable for high-performance CPUs. It features six pure copper sintered heat pipes that enhance heat transfer efficiency. The fan speed can reach up to 1500 RPM, with a maximum airflow of 66.17 CFM while maintaining a noise level of ≤25.6 dB(A). In comparison, the S-Union fan's performance is adequate for laptop cooling but does not match the robust specifications of the Thermalright unit. The S-Union replacement is geared more towards maintaining reasonable temperatures in a confined laptop environment.

Compatibility

Compatibility is a crucial factor to consider when choosing cooling solutions. The Thermalright Peerless Assassin 120 supports a wide range of Intel and AMD sockets, including popular models like Intel 1150 through 2066 and AMD AM4/AM5. This broad compatibility allows it to fit various builds, making it a versatile option for PC builders. On the other hand, the S-Union fan is specifically tailored for Acer Nitro 5 and Nitro 7 series laptops. While it is essential for users of these laptops, its compatibility is limited compared to the Thermalright cooler, which is suitable for desktop setups.

Installation Process

The installation process can significantly impact user experience. The Thermalright Peerless Assassin 120 comes with metal fasteners designed to facilitate easy installation on both Intel and AMD platforms. This thoughtful design helps users avoid potential installation issues. In contrast, the S-Union fan replacement is also designed for straightforward installation in Acer Nitro laptops, making it user-friendly for those familiar with laptop repairs. However, the S-Union's installation may not offer the same level of ease and flexibility as the Thermalright cooler, particularly for users who might be less experienced with laptop components.

Price Comparison

Price is a critical factor for many consumers. The Thermalright Peerless Assassin 120 is priced at C$51.39, reflecting its advanced cooling capabilities and the dual-tower design. In contrast, the S-Union fan replacement is significantly more affordable at C$29.99. While the S-Union offers a budget-friendly option for laptop users needing a replacement fan, the Thermalright cooler justifies its higher price with superior cooling performance and compatibility with a broader range of systems.

Warranty and Support

Both products come with assurances regarding their quality and support. The S-Union fan replacement offers an 18-month warranty and provides customer assistance for any pre-sale or after-sale inquiries. This can be especially reassuring for users who may have concerns about the longevity and performance of their laptop cooling solution. On the other hand, the warranty details for the Thermalright Peerless Assassin 120 are not explicitly mentioned, but its established brand reputation in the cooling market suggests a level of reliability and support appropriate for its category.

User Experience and Reviews

User experience can provide valuable insights into product performance. The Thermalright Peerless Assassin 120 has received positive feedback for its cooling efficiency and aesthetic appeal, thanks to its ARGB lighting effects. Users appreciate its quiet operation and excellent thermal performance. In contrast, the S-Union fan has been praised for its compatibility and ease of installation but may not generate the same level of excitement as a high-performance cooler. Users of the S-Union fan typically value its reliability as a replacement part, while enthusiasts may gravitate towards the more robust features of the Thermalright cooler.

Which should you buy?

Ultimately, the decision between the Thermalright Peerless Assassin 120 and the S-Union New CPU+GPU Cooling Fan Replacement hinges on your specific needs. If you are building or upgrading a desktop system that requires effective cooling for high-performance CPUs, the Thermalright cooler is the superior choice with its advanced features and broad compatibility. However, if you own an Acer Nitro 5 or Nitro 7 and need a reliable replacement fan without breaking the bank, the S-Union fan replacement is a practical and economical option. Assess your system requirements and budget to make the best choice for your cooling needs.

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Thermalright Peerless Assassin 120 CPU Air Cooler vs S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43 | versusfinder