AMD AM4 Backplate - CPU Heatsink Bracket - Motherboard Mounting Hole 90x54mm - S vs Thermalright Assassin X 120 SE CPU Air Cooler
Updated August 2026 — The Thermalright Assassin X 120 SE offers superior cooling performance and compatibility, making it the better choice for high-performance setups. The AMD AM4 Backplate is a budget-friendly option for those who already have a cooling fan.
The Thermalright Assassin X 120 SE offers superior cooling performance and compatibility, making it the better choice for high-performance setups. The AMD AM4 Backplate is a budget-friendly option for those who already have a cooling fan.
Why AMD AM4 Backplate - CPU Heatsink Bracket - Motherboard Mounting Hole 90x54mm - S is better
lower price
C$5.85 vs C$25.59
silent operation
no moving parts
easy installation
straightforward setup for AM4
Why Thermalright Assassin X 120 SE CPU Air Cooler is better
active cooling
includes PWM fan for better heat management
broader compatibility
supports multiple Intel and AMD sockets
higher TDP rating
TDP of 125 to 225W for intensive tasks
Overall score
Specifications
| Spec | AMD AM4 Backplate - CPU Heatsink Bracket - Motherboard Mounting Hole 90x54mm - S | Thermalright Assassin X 120 SE CPU Air Cooler |
|---|---|---|
| Material | Copper/ABS | Aluminum |
| Noise Level | 0 dB | ≤25.6 dB |
| Airflow | N/A | 66.17 CFM |
| Socket Support | AM4 only | Intel & AMD |
| Price | C$5.85 | C$25.59 |
Dimension comparison
Overview of the Products
In this comparison, we will look at the AMD AM4 Backplate - CPU Heatsink Bracket and the Thermalright Assassin X 120 SE CPU Air Cooler. The AMD AM4 Backplate is priced at C$5.85, while the Thermalright Assassin X 120 SE is significantly more expensive at C$25.59. Understanding the key features and functions of both products will help you decide which is better suited for your cooling needs.
Design and Build Quality
The AMD AM4 Backplate features a precision-crafted design specifically meant for AMD's AM4 socket CPUs. Constructed from copper and high-quality ABS plastic, this backplate optimizes heat dissipation and ensures a secure hold on the heatsink. On the other hand, the Thermalright Assassin X 120 SE boasts a robust build with dimensions of 125mm in length and a weight of 0.645kg. This air cooler is made of aluminum and includes metal fasteners for both Intel and AMD platforms, enhancing its durability and effectiveness. Thus, while both products emphasize quality, the Assassin X 120 SE offers a more comprehensive construction suitable for intensive use.
Cooling Efficiency
Cooling efficiency is crucial for maintaining optimal CPU performance. The AMD AM4 Backplate is designed to maximize heat dissipation, ensuring stable mounting pressure for AM4 socket processors. This backplate is essential for optimizing your PC's cooling system, although it does not include a fan. In contrast, the Thermalright Assassin X 120 SE is engineered for high performance with a TDP rating of 125 to 225W. It features a PWM fan with an airflow of 66.17 CFM and operates at a maximum noise level of 25.6 dB. This indicates that while the AMD backplate assists in heat management, the Thermalright cooler offers active cooling capabilities, making it more effective for high-performance setups.
Compatibility
Compatibility is an important factor to consider when choosing cooling solutions. The AMD AM4 Backplate is exclusively designed for AM4 platform motherboards, providing a secure mount for compatible heatsinks. On the other hand, the Thermalright Assassin X 120 SE is versatile, supporting multiple Intel sockets (115X, 1200, 1700, 17XX) in addition to AMD's AM4. This broader compatibility allows the Thermalright cooler to be used in various builds, making it a more flexible choice for users with different CPU setups.
Noise Levels
Noise levels can significantly affect the user experience, especially in quiet environments. The AMD AM4 Backplate does not produce any noise as it is a passive component without any moving parts. In contrast, the Thermalright Assassin X 120 SE operates with a PWM fan that has a maximum noise level of 25.6 dB. While this is relatively quiet for a CPU cooler, it does represent an audible presence compared to the silent operation of the AMD backplate. If silence is your priority, the backplate might be the preferred option.
Price and Value
Pricing plays a vital role in determining the value of a product. The AMD AM4 Backplate is priced at C$5.85, making it an economical choice for those looking to enhance their cooling system without breaking the bank. In contrast, the Thermalright Assassin X 120 SE is priced at C$25.59, which is a considerable investment. However, this higher price reflects its advanced cooling capabilities and versatility. For budget-conscious buyers, the backplate offers great value, while the cooler justifies its cost through enhanced performance and additional features.
User Experience and Installation
User experience is influenced by ease of installation and overall effectiveness. The AMD AM4 Backplate is designed for straightforward installation, allowing users to secure their heatsink easily. However, it does require an additional fan for effective cooling, which may complicate setup for some users. In contrast, the Thermalright Assassin X 120 SE includes mounting hardware for both Intel and AMD sockets, simplifying the installation process. Its design caters to users looking for a hassle-free experience while ensuring optimal cooling performance.
Overall Performance
In terms of overall performance, the AMD AM4 Backplate is a solid choice for users with existing cooling solutions who need a reliable mounting system. It excels in ensuring stable thermal management for AM4 CPUs. However, for users seeking a more comprehensive cooling solution, the Thermalright Assassin X 120 SE is far superior. Its active cooling capabilities, robust design, and compatibility with various CPU sockets make it a standout choice for high-performance computing.
Which should you buy?
Choosing between the AMD AM4 Backplate and the Thermalright Assassin X 120 SE depends heavily on your specific needs. If you're looking for an affordable and straightforward solution for an AM4 setup and already have a cooling fan, the AMD backplate is a great option. However, if you require an all-in-one cooling solution that offers excellent performance and compatibility across different sockets, the Thermalright Assassin X 120 SE is the way to go. The extra investment in the Thermalright cooler is justified by its superior heat management and versatility, making it ideal for gaming or intensive computing tasks.
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