ID-COOLING SE-903-XT V2 Black CPU Air Cooler, vs Thermalright Assassin X 120R SE V2 CPU Cooler, 4×
Updated August 2026 — Thermalright Assassin X 120R SE V2 CPU Cooler, 4× leads on noise level and compatibility.
The ID-COOLING SE-903-XT V2 offers a better price and compact design, while the Thermalright Assassin X 120R SE V2 excels in airflow and aesthetics.
Why ID-COOLING SE-903-XT V2 Black CPU Air Cooler, is better
Price
ID-COOLING is cheaper by $1.60
Compact Size
Better fit for smaller cases
Low Noise
Designed for quieter operation
Why Thermalright Assassin X 120R SE V2 CPU Cooler, 4× is better
Airflow
Larger fan provides better airflow
RGB Lighting
Customizable RGB enhances aesthetics
Build Quality
S-FDB bearings improve longevity
Overall score
Specifications
| Spec | ID-COOLING SE-903-XT V2 Black CPU Air Cooler, | Thermalright Assassin X 120R SE V2 CPU Cooler, 4× |
|---|---|---|
| Fan Speed | 1000 RPM | 1550 RPM |
| Noise Level | ≤25 dB(A) | ≤25.6 dB(A) |
| Socket Support | Intel & AMD | Intel & AMD |
| Cooling Type | Air | Air |
| Material | Aluminum | Copper & Aluminum |
Dimension comparison
Price Comparison
When comparing the prices of the ID-COOLING SE-903-XT V2 Black CPU Air Cooler and the Thermalright Assassin X 120R SE V2, the former is priced at $14.99, while the latter costs $16.59. This means that the ID-COOLING cooler is about 10% cheaper than the Thermalright option. For budget-conscious consumers, this price difference could be a significant factor when making a choice between these two CPU coolers.
Cooling Performance
In terms of cooling performance, the ID-COOLING SE-903-XT V2 features an upgraded tower heatsink design with direct touch heatpipes that offer more stable and efficient heat dissipation. Meanwhile, the Thermalright Assassin X 120R SE V2 uses a pure copper base along with four 6mm heat pipes and a fan speed of 1550 RPM to enhance its cooling capabilities. While both coolers aim to provide effective thermal management, the direct touch technology of the ID-COOLING model may deliver slightly better performance under load conditions due to its design.
Fan Design and Noise Levels
The fan configurations of both coolers play a crucial role in their overall performance. The ID-COOLING SE-903-XT V2 comes with a 100mm PWM fan that is designed to balance airflow and noise, ensuring a quieter operation during gaming and daily tasks. On the other hand, the Thermalright Assassin X 120R SE V2 features a 120mm PWM fan that operates at a maximum of 1550 RPM and maintains a noise level of 25.6 dB(A). While the Thermalright fan is larger and may produce more airflow, the noise levels of both coolers are comparable, making them suitable for quiet computing environments.
Compatibility and Installation
The installation processes for both CPU coolers are designed to be user-friendly. The ID-COOLING SE-903-XT V2 includes an upgraded universal mounting bracket that simplifies installation on both Intel and AMD platforms. In contrast, the Thermalright Assassin X 120R SE V2 also supports a wide range of Intel and AMD sockets, ensuring compatibility with various builds. However, the ID-COOLING model's compact size and low-profile design may offer an edge in fitting within smaller cases, making it a better choice for those with space constraints.
Aesthetic Appeal
When it comes to aesthetics, the ID-COOLING SE-903-XT V2 boasts a refined and cohesive design that integrates seamlessly into any setup, whether it be for gaming, office use, or home PC builds. The sleek black finish enhances its visual appeal. Conversely, the Thermalright Assassin X 120R SE V2 features RGB lighting on its fan, adding a customizable visual element that can enhance the overall look of a gaming rig. Depending on personal preference, either cooler could be more visually appealing.
Durability and Build Quality
Durability is a key consideration for CPU coolers, and both models present robust designs. The ID-COOLING SE-903-XT V2 features enhanced fin locking and secure fan clip designs that minimize vibration and improve longevity. The Thermalright Assassin X 120R SE V2 is built with quality S-FDB bearings, which not only reduce noise but also extend the lifespan of the fan. Both coolers appear to be built with durability in mind, but the specifics of their construction may appeal differently based on user experiences.
Customer Feedback and Sales Rank
While specific sales rank data is not provided for either product, customer feedback can greatly influence purchasing decisions. Potential buyers often look for community reviews and ratings to gauge performance, reliability, and overall satisfaction. As of the current data, there is no indication of which product has garnered more favorable reviews, making it essential for consumers to research user opinions before making a decision.
Which should you buy?
Deciding between the ID-COOLING SE-903-XT V2 and the Thermalright Assassin X 120R SE V2 ultimately depends on individual needs and preferences. The ID-COOLING model offers a lower price point and compact design, making it an excellent choice for those seeking budget-friendly cooling solutions for smaller cases. Conversely, the Thermalright cooler, while slightly more expensive, provides superior airflow and customizable RGB lighting, appealing to users who prioritize aesthetics and performance. Consider your system requirements and personal preferences to make the best choice for your setup.

