ID-COOLING SE-903-XT V2 Black CPU Air Cooler, vs Thermalright Peerless Assassin 120 SE V2 CPU
Updated August 2026 — ID-COOLING SE-903-XT V2 Black CPU Air Cooler, wins on noise level, Thermalright Peerless Assassin 120 SE V2 CPU wins on design and airflow.
The ID-COOLING SE-903-XT V2 is a budget-friendly option with decent performance, while the Thermalright Peerless Assassin 120 SE V2 offers superior cooling for demanding tasks. Choose based on your performance needs and budget.
Why ID-COOLING SE-903-XT V2 Black CPU Air Cooler, is better
Price
ID-COOLING is significantly cheaper at $14.99.
Noise
ID-COOLING is designed for quieter operation.
Size
ID-COOLING has a compact design for smaller cases.
Why Thermalright Peerless Assassin 120 SE V2 CPU is better
Cooling
Thermalright has a dual tower design for better heat dissipation.
Performance
Thermalright supports higher RPM for enhanced cooling.
Compatibility
Thermalright supports more CPU socket types.
Overall score
Specifications
| Spec | ID-COOLING SE-903-XT V2 Black CPU Air Cooler, | Thermalright Peerless Assassin 120 SE V2 CPU |
|---|---|---|
| Cooling Type | Air | Air |
| Fan RPM | Max 1000 | Max 1850 |
| Noise Level | Low | 29.5 dBA |
| Mounting | Universal | Universal |
| Socket Support | Intel & AMD | AMD AM4/AM5, Intel LGA1851/1700 |
Dimension comparison
Introduction to CPU Coolers
When it comes to cooling your CPU, selecting the right cooler can significantly impact your system's performance and longevity. In this comparison, we will evaluate two distinct offerings: the ID-COOLING SE-903-XT V2 Black CPU Air Cooler and the Thermalright Peerless Assassin 120 SE V2 CPU Cooler. The ID-COOLING model is priced at $14.99, making it a budget-friendly option, while the Thermalright cooler comes in at $38.99, a difference of about 17%. Each cooler has unique features and advantages, making them suitable for different user needs.
Design and Aesthetics
The design of a CPU cooler is essential not only for performance but also for how it fits into your overall build. The ID-COOLING SE-903-XT V2 features a compact tower design, which allows it to easily fit into smaller cases without interfering with RAM or motherboard components. Its refined aesthetic enhances the overall look of your gaming or office setup. On the other hand, the Thermalright Peerless Assassin 120 SE V2 employs a dual tower design that not only looks impressive but also improves heat transfer efficiency. Both coolers are visually appealing, but the choice largely depends on the size of your case and personal preference.
Cooling Performance
Cooling performance is paramount when choosing a CPU cooler, especially if you're into gaming or high-load multitasking. The ID-COOLING SE-903-XT V2 boasts an upgraded cooling performance thanks to its direct touch heatpipes and a larger 100mm fan, which enhances airflow while maintaining balanced noise levels. Conversely, the Thermalright Peerless Assassin 120 SE V2 features a dual tower design with six heat pipes and dual 120mm PWM fans that can run up to 1850 RPM. This setup is designed for maximum heat dissipation, making it a solid choice for high-performance systems. While both coolers offer excellent cooling, the Thermalright model may have the edge for extreme users.
Noise Levels
Noise levels can significantly affect your user experience, particularly in quieter environments. The ID-COOLING SE-903-XT V2 is designed to operate quietly, making it suitable for both gaming and office use. The specifics on its noise levels aren't provided, but its focus on low noise operation suggests a quieter performance. The Thermalright Peerless Assassin 120 SE V2, while also balancing airflow and cooling performance, has a noise level rated at 29.5 dBA. This is relatively quiet but may be noticeable in silent settings. If silence is a priority, the ID-COOLING cooler might be the better option.
Compatibility
Compatibility is crucial when selecting a CPU cooler to ensure it will fit your system. The ID-COOLING SE-903-XT V2 offers universal mounting brackets that are compatible with both Intel and AMD platforms, making it a versatile choice for various builds. Similarly, the Thermalright Peerless Assassin 120 SE V2 supports a wide range of platforms, including AMD AM4/AM5 and Intel LGA1851/1700. This broad compatibility makes both coolers suitable for current mainstream desktop setups. However, if you plan to switch between different platforms, the ID-COOLING's universal mounting may offer a slight advantage.
Installation Process
An easy installation process can save time and hassle when setting up your CPU cooler. The ID-COOLING SE-903-XT V2 features an upgraded universal mounting bracket that simplifies installation for both Intel and AMD platforms. This user-friendly approach is ideal for those who may not have extensive experience with PC building. The Thermalright Peerless Assassin 120 SE V2 also emphasizes ease of installation, but specific details on its mounting process are less highlighted. Given the focus on user-friendliness in the ID-COOLING model, it may appeal more to novice builders.
Price and Value
When comparing the price, the ID-COOLING SE-903-XT V2 is significantly less expensive at $14.99 compared to the Thermalright Peerless Assassin 120 SE V2, which retails for $38.99. This price difference of about 17% can be a deciding factor for budget-conscious consumers. However, the Thermalright cooler may provide higher performance, particularly for demanding tasks. Therefore, the value depends on your specific needs—whether you prioritize cost savings or enhanced cooling capabilities.
Which should you buy?
Deciding between the ID-COOLING SE-903-XT V2 and the Thermalright Peerless Assassin 120 SE V2 boils down to your specific requirements. If you are looking for a budget-friendly, compact cooler with decent performance and low noise, the ID-COOLING is an excellent choice. Conversely, if you require superior cooling performance for high-load tasks and have the budget for it, the Thermalright cooler justifies its higher price with its dual tower design and enhanced thermal efficiency. Ultimately, both coolers have their merits, and your choice should align with your performance needs and budget constraints.

