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Thermalright Assassin X 120R SE V2 CPU Air Cooler vs S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43

Updated August 2026The Thermalright Assassin X 120R SE V2 offers superior performance and features for desktop users, while the S-Union fan is a solid choice for specific laptop replacements.

The Thermalright Assassin X 120R SE V2 offers superior performance and features for desktop users, while the S-Union fan is a solid choice for specific laptop replacements.

Why Thermalright Assassin X 120R SE V2 CPU Air Cooler is better

Cooling Performance

Higher airflow and lower noise levels

Build Quality

Advanced engineering with longer lifespan

Compatibility

Supports multiple CPU sockets

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

Target Audience

Specifically designed for Acer Nitro laptops

Warranty

Offers an 18-month warranty

Ease of Replacement

Direct replacement for specific laptop models

Overall score

Thermalright Assassin X 120R SE V2 CPU Air Cooler
85
S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43
70

Specifications

SpecThermalright Assassin X 120R SE V2 CPU Air CoolerS-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43
BrandThermalrightS-Union
Socket SupportIntel/AMDAcer Nitro
Fan TypePWMStandard
MaterialPBT + PCNot specified
Lifespan20000 hoursNot specified

Dimension comparison

Thermalright Assassin X 120R SE V2 CPU Air CoolerS-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43

Overview of the Products

In this comparison, we will look at the Thermalright Assassin X 120R SE V2 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$23.59, while the S-Union fan replacement costs C$29.99. Both products cater to different cooling needs in the computing world, with the Thermalright focusing on CPU cooling solutions for various platforms and the S-Union designed specifically as a replacement for Acer Nitro 5 series laptops.

Target Audience

The Thermalright Assassin X 120R SE V2 is aimed at PC builders and gamers who require efficient CPU cooling solutions. Its compatibility with multiple Intel and AMD sockets makes it versatile for a wide range of setups. On the other hand, the S-Union cooling fan is tailored for users of Acer Nitro 5 and Nitro 7 series laptops, specifically those needing to replace an existing fan. Each product serves a distinct audience, with the Thermalright cooler appealing to desktop users and the S-Union fan catering to laptop users.

Cooling Performance

Thermalright's Assassin X 120R SE V2 boasts an efficient cooling performance, featuring a PWM fan with a maximum airflow of 66.17 CFM and a noise level of less than 25.6 dB(A). This makes it an excellent choice for those who desire powerful cooling without the added noise. In contrast, the S-Union cooling fan does not specify airflow or noise levels but is designed to replace existing fans in laptops, ensuring that it provides adequate cooling for the CPU and GPU. While the Thermalright cooler excels in desktop performance metrics, the S-Union fan’s performance is implicitly reliant on its compatibility with specific laptop models.

Design and Build Quality

The design of the Thermalright Assassin X 120R SE V2 reflects its focus on high-performance cooling. It incorporates advanced technology, such as AGHP heat pipes that enhance heat dissipation and S-FDB bearings for extended durability, ensuring a lifespan of up to 20,000 hours. The S-Union fan replacement is also noted for quality, stating that all items are rigorously tested before shipping, but specific materials or technology details are not provided. Thus, while both products promise quality, the Thermalright cooler offers more detailed assurances regarding its advanced engineering and longevity.

Installation Process

Installation processes for both cooling solutions are straightforward but cater to different platforms. The Thermalright Assassin X 120R SE V2 comes with mounting plates and fasteners for various CPU sockets, making it easy for users to install it according to provided instructions or videos. Conversely, the S-Union fan replacement is specifically designed for Acer Nitro 5 and Nitro 7 series laptops, ensuring a precise fit for those models. However, it lacks detailed installation instructions in the provided data, which could affect user experience for those unfamiliar with laptop disassembly.

Noise Levels

The Thermalright Assassin X 120R SE V2 is engineered for quiet operation, with a maximum noise level of 25.6 dB(A), making it suitable for environments where noise is a concern. In contrast, the S-Union cooling fan does not provide any specific noise level metrics. Given that laptop cooling fans typically operate in a confined space, users may experience varying noise levels depending on the system load and fan speed, but no explicit figure is available for the S-Union fan. Therefore, the Thermalright cooler has a clear advantage in terms of noise management.

Warranty and Customer Support

The S-Union cooling fan offers an 18-month warranty, providing users with peace of mind regarding the product's reliability. In contrast, the Thermalright Assassin X 120R SE V2 does not mention any warranty details in the provided data, which may leave potential buyers uncertain about post-purchase support. The S-Union's commitment to customer service, allowing for assistance with pre-sale or after-sale questions, further enhances its appeal for users who may need additional support.

Price Comparison

The Thermalright Assassin X 120R SE V2 is priced at C$23.59, making it a budget-friendly option for those seeking a high-performance CPU cooler. On the other hand, the S-Union cooling fan replacement is slightly pricier at C$29.99. While both products fall within a reasonable price range for their respective categories, the Thermalright cooler offers a more attractive entry point for users looking to enhance their CPU cooling without breaking the bank.

Which should you buy?

Choosing between the Thermalright Assassin X 120R SE V2 and the S-Union New CPU+GPU Cooling Fan Replacement largely depends on your specific needs. If you're building or upgrading a desktop PC and require a reliable, quiet CPU cooler with strong performance metrics and broad compatibility, the Thermalright cooler is the better choice. However, if you own an Acer Nitro 5 or Nitro 7 laptop and need a replacement fan, the S-Union fan is tailored for that purpose, despite being pricier and less detailed in performance specifications. Ultimately, your decision should align with either your desktop or laptop cooling requirements.

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Thermalright Assassin X 120R SE V2 CPU Air Cooler vs S-Union New CPU+GPU Cooling Fan Replacement for Nitro 5 AN515-43 | versusfinder