Delta A40 ARGB CPU Cooler vs Thermalright Peerless Assassin 120 CPU Air Cooler
Updated August 2026 — The Delta A40 offers great value for budget-conscious users, while the Thermalright Peerless Assassin excels in performance and quieter operation. Choose based on your cooling needs and budget.
The Delta A40 offers great value for budget-conscious users, while the Thermalright Peerless Assassin excels in performance and quieter operation. Choose based on your cooling needs and budget.
Why Delta A40 ARGB CPU Cooler is better
price
Delta A40 is significantly cheaper at C$19.29
design
Delta A40 has customizable ARGB lighting effects
ease of installation
Delta A40 includes all-metal mounting hardware for easy setup
Why Thermalright Peerless Assassin 120 CPU Air Cooler is better
performance
Thermalright has a higher TDP of 245W
noise level
Thermalright operates at a quieter 25.6 dB(A)
compatibility
Thermalright supports more Intel socket types
Overall score
Specifications
| Spec | Delta A40 ARGB CPU Cooler | Thermalright Peerless Assassin 120 CPU Air Cooler |
|---|---|---|
| Brand | Ocypus | Thermalright |
| Fan Speed (RPM) | 500-2000 | 1500 |
| Socket Support | Intel LGA 115X/1200/1700/1851, AMD AM4/AM5 | Intel 1150/1151/1155/1156/1200/1700/2066/2011, AMD AM4/AM5 |
| Cooling Type | Air | Air |
| Lighting | ARGB | ARGB |
Dimension comparison
Overview
In this comparison, we will evaluate two CPU coolers: the Delta A40 ARGB CPU Cooler and the Thermalright Peerless Assassin 120 CPU Air Cooler. The Delta A40 is priced at C$19.29, making it a budget-friendly option, while the Thermalright Peerless Assassin comes in at a significantly higher price of C$51.39. While both coolers serve the same purpose, their features and performance capabilities vary widely.
Performance Capabilities
The Delta A40 is capable of handling power dissipation of up to 220W, which is suitable for most gaming and creative tasks. On the other hand, the Thermalright Peerless Assassin boasts a higher thermal design power (TDP) of 245W, indicating its ability to manage even more demanding CPUs. This difference in TDP suggests that the Thermalright may be a better choice for users with high-performance processors requiring superior cooling efficiency.
Design and Aesthetics
In terms of design, the Delta A40 features a unique circular design with a mirror-like array and customizable ARGB lighting effects, allowing users to personalize their setups. The cooling fan achieves an airflow of 73 CFM while maintaining a noise level of 29 dB(A). Conversely, the Thermalright Peerless Assassin has a more traditional twin-tower design with an effective heat dissipation area of 9600 cm². Its ARGB fans also produce a maximum air flow of 66.17 CFM but operate at a lower noise level of 25.6 dB(A). If aesthetics and noise levels are essential for your build, the Thermalright may have a slight edge.
Cooling Technology
Both coolers employ innovative cooling technologies to maintain optimal temperatures. The Delta A40 utilises a high-performance silent fan with a speed range of 500-2000 RPM, designed for a new balance between performance and silence. In contrast, the Thermalright Peerless Assassin incorporates six 6mm heat pipes and a PWM fan to enhance cooling performance, particularly leveraging its AGHP technique to mitigate inverse gravity effects. This advanced technology may offer better cooling consistency during intense usage scenarios.
Compatibility
When it comes to compatibility, the Delta A40 is designed to support mainstream Intel and AMD platforms, including Intel LGA 115X/1200/1700/1851 and AMD AM4/AM5 sockets. The Thermalright Peerless Assassin, however, supports a wider range of Intel sockets, including 2066 and 2011, as well as AMD AM4 and AM5. This broader compatibility makes the Thermalright more versatile for users who might switch between different CPU platforms in the future.
Installation and Ease of Use
Both coolers are designed for straightforward installation. The Delta A40 comes with all-metal mounting hardware, simplifying the assembly process for both Intel and AMD systems. Similarly, the Thermalright Peerless Assassin includes metal fasteners tailored for various Intel and AMD sockets, ensuring a smooth installation experience. Despite their differences in complexity, both coolers are user-friendly, making them accessible for DIY builders.
Noise Levels
Noise levels are a critical factor for many PC builders. The Delta A40 operates at a noise level of 29 dB(A), which could be noticeable in a quiet environment. In contrast, the Thermalright Peerless Assassin is quieter at 25.6 dB(A), making it a more suitable option for users who prioritise low-noise operation. If a silent operation is a top priority, the Thermalright may be the better choice.
Price and Value
The Delta A40 is priced at C$19.29, making it an extremely attractive option for budget-conscious consumers. In comparison, the Thermalright Peerless Assassin is priced at C$51.39, reflecting its advanced features and higher performance capabilities. While the Delta A40 provides excellent value for casual users or gamers with moderate cooling needs, the Thermalright offers more robust performance for users willing to invest more for superior cooling efficiency and features.
Which should you buy?
Ultimately, the choice between the Delta A40 ARGB CPU Cooler and the Thermalright Peerless Assassin 120 CPU Air Cooler hinges on your specific needs and budget. If you're looking for a cost-effective and aesthetically pleasing cooler for moderate workloads, the Delta A40 is a great fit. However, if you require more advanced cooling capabilities for high-performance CPUs and quieter operation, the Thermalright Peerless Assassin stands out as the superior choice despite its higher price. Consider your cooling demands and budget to make the best decision for your setup.
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