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DGZZI AM4 Backplane Back Durable CPU Heatsink vs Thermalright Assassin King 120 SE White ARGB CPU

Updated August 2026 — full head-to-head comparison.

Overview of the DGZZI AM4 Backplane and Thermalright Assassin King 120 SE

The DGZZI AM4 Backplane is priced at $7.99, making it a budget-friendly option for users needing a CPU fan mounting solution. In contrast, the Thermalright Assassin King 120 SE is available for $19.82, which is approximately 148% more expensive than the DGZZI product. This price difference highlights their distinct purposes within the CPU cooling market: the DGZZI serves as a mounting bracket, while the Thermalright is a comprehensive air cooler designed for optimal heat dissipation.

Design and Build Quality

The DGZZI AM4 Backplane features a simple design made from copper and plastic, ensuring good heat dissipation and durability. Its practical mounting hole spacing of 90x54mm is specifically tailored for AMD Socket AM4 motherboards. On the other hand, the Thermalright Assassin King 120 SE boasts a more complex construction with five heat pipes and a PWM fan, designed for both performance and aesthetics. The cooler is made from aluminum and includes metal fasteners for secure installation on various CPU sockets. This advanced design aims to provide superior cooling efficiency compared to a basic mounting bracket.

Cooling Performance

In terms of cooling performance, the Thermalright Assassin King 120 SE is engineered to provide efficient airflow, with a maximum airflow of 66.17 CFM and a noise level of up to 25.6 dB(A). This makes it suitable for users looking for effective cooling without excessive noise. Conversely, the DGZZI AM4 Backplane does not offer any cooling capabilities on its own, as it is merely a mounting solution for CPU fans. Therefore, if cooling performance is a primary concern, the Thermalright model is the clear winner.

Compatibility

The DGZZI AM4 Backplane is specifically designed for AMD Socket AM4 motherboards, ensuring a perfect fit for users with compatible setups. Its utility is limited to those using AMD chips, which may restrict its appeal. In contrast, the Thermalright Assassin King 120 SE supports a wider range of CPU sockets, including AMD AM4/AM5 and Intel LGA1700/1150/1151/1200/1851. This versatility makes the Thermalright cooler a more adaptable choice for users who may switch between different CPU platforms in the future.

Installation Process

The installation process for the DGZZI AM4 Backplane is straightforward, with a focus on replacing existing mounting hardware for AMD motherboards. It includes a small hole corresponding to the motherboard pins, ensuring a secure fit. However, it does not provide instructions or additional components for mounting a fan. In contrast, the Thermalright Assassin King 120 SE includes all necessary mounting hardware and is designed for easy installation across various platforms. The inclusion of detailed specifications and installation instructions makes it a user-friendly choice, particularly for those unfamiliar with CPU cooler setups.

Brand Reputation

DGZZI and Thermalright cater to different segments of the market. DGZZI may not have the same level of brand recognition as Thermalright, which has over 20 years of experience in developing computer cooling solutions. The latter is noted for its research and development in the field of CPU cooling, which contributes to its positive reputation among gamers and PC enthusiasts. This established credibility can influence purchasing decisions, particularly for users looking for reliable performance from their cooling solutions.

Price Comparison

With the DGZZI AM4 Backplane priced at $7.99 and the Thermalright Assassin King 120 SE at $19.82, the DGZZI option is about 60% cheaper. This stark price difference may appeal to budget-conscious consumers or those who only need a simple mounting solution without the added complexity of a full air cooler. However, potential buyers should consider whether the cost savings align with their cooling needs and the overall performance they expect from their CPU setup.

Which should you buy?

Ultimately, the choice between the DGZZI AM4 Backplane and the Thermalright Assassin King 120 SE hinges on your specific needs. If you require a simple, budget-friendly solution for mounting a CPU fan and are using an AMD Socket AM4 motherboard, the DGZZI is a practical choice. However, if you seek a comprehensive cooling solution that offers versatility, better cooling performance, and ease of installation across multiple CPU platforms, the Thermalright model stands out as the superior option despite its higher price.