Thermalright Assassin X 90 SE V2 CPU Cooler vs Thermalright SI-100 White ARGB CPU Air Cooler
Updated August 2026 — The Thermalright Assassin X 90 SE V2 offers better cooling performance and lower noise levels, making it the more economical choice. However, the SI-100 White ARGB excels in aesthetics and compatibility.
The Thermalright Assassin X 90 SE V2 offers better cooling performance and lower noise levels, making it the more economical choice. However, the SI-100 White ARGB excels in aesthetics and compatibility.
Why Thermalright Assassin X 90 SE V2 CPU Cooler is better
Cooling Performance
Lower noise level at 23.85 dB(A) compared to SI-100's 27.7 dB(A).
Price
More budget-friendly at C$24.90.
Height
Taller design may fit better in larger cases.
Why Thermalright SI-100 White ARGB CPU Air Cooler is better
Aesthetics
Features ARGB lighting for a modern look.
Airflow
Higher airflow of 72.37 CFM compared to 32.77 CFM.
Compatibility
Supports more Intel sockets (up to 2066).
Overall score
Specifications
| Spec | Thermalright Assassin X 90 SE V2 CPU Cooler | Thermalright SI-100 White ARGB CPU Air Cooler |
|---|---|---|
| Cooling Tech | AGHP 4x6mm | AGHP 6x6mm |
| Max Airflow | 32.77 CFM | 72.37 CFM |
| Noise Level | 23.85 dB(A) | 27.7 dB(A) |
| Price | C$24.90 | C$35.90 |
| Socket Support | Intel 1150-1200, AMD AM4/AM5 | Intel 1150-2066, AMD AM4/AM5 |
Dimension comparison
Brand Overview
Both the Thermalright Assassin X 90 SE V2 CPU Cooler and the Thermalright SI-100 White ARGB CPU Air Cooler come from the reputable Taiwanese brand Thermalright, which has over 20 years of experience in developing high-quality computer accessories. The brand has established a solid reputation both domestically and internationally, particularly in the cooler market. This legacy of innovation underlines the reliability and performance of both products, making them strong contenders in the CPU cooling segment.
Design and Aesthetics
In terms of design, the Thermalright SI-100 White ARGB CPU Air Cooler stands out with its white finish and ARGB lighting, appealing to users who prioritise aesthetics in their builds. It measures 120(L)x108(W)x100(H)mm, making it suitable for small to medium-sized cases. In contrast, the Thermalright Assassin X 90 SE V2 is slightly bulkier at 94(L)x77(W)x118(H)mm but features a more traditional design. While both coolers are made from industrial-grade materials, the SI-100 offers a more modern look that may attract gamers and PC builders looking for a stylish component.
Cooling Performance
Cooling performance is a critical factor to consider, and both products utilize Advanced Gravity Heat Pipe (AGHP) technology. The Thermalright Assassin X 90 SE V2 features a 4x6mm heatpipe design and a PWM fan that operates at a maximum speed of 2200 RPM, providing an airflow of 32.77 CFM with a noise level of 23.85 dB(A). On the other hand, the Thermalright SI-100 White ARGB utilises a 6x6mm heat pipe and a PWM fan with a maximum speed of 2000 RPM, offering an airflow of 72.37 CFM but at a higher noise level of 27.7 dB(A). The Assassin X 90 SE V2's slightly higher RPM and lower noise output suggest it may be more effective in environments where quiet operation is essential.
Compatibility
Both coolers are designed to support a wide range of CPU sockets, making them versatile options for various builds. The Thermalright Assassin X 90 SE V2 is compatible with Intel sockets 1150 through 1200 and AMD sockets AM4 and AM5. Meanwhile, the Thermalright SI-100 White ARGB extends compatibility further, supporting Intel sockets from 1150 to 2066 and AMD sockets AM4 and AM5. This broader compatibility of the SI-100 makes it a better choice for users who may upgrade to more recent CPU models in the future.
Installation Process
When it comes to installation, both coolers come with the necessary mounting plates and fasteners for easy setup. The Thermalright Assassin X 90 SE V2 is designed for a straightforward installation process, requiring minimal effort to set up on compatible CPU slots. Similarly, the Thermalright SI-100 White ARGB includes metal fasteners that aid in achieving a better installation experience. However, due to the SI-100’s slightly lower height of 100mm compared to the Assassin X 90 SE V2's 118mm, it may be a more accommodating fit for compact cases.
Price Comparison
In terms of pricing, the Thermalright Assassin X 90 SE V2 is available for C$24.90, making it a budget-friendly option for users seeking efficient cooling solutions. In contrast, the Thermalright SI-100 White ARGB is priced at C$35.90, reflecting its added features like ARGB lighting and broader compatibility. While both prices are relatively affordable, the Assassin X 90 SE V2 offers a more economical choice, especially for users who do not require aesthetic enhancements.
User Experience and Reviews
User experience and reviews play a pivotal role in choosing the right CPU cooler. The Thermalright Assassin X 90 SE V2 is praised for its effective cooling performance while maintaining a low noise level, making it ideal for users who work in quiet environments or for those who prefer subdued gaming setups. The Thermalright SI-100 White ARGB, on the other hand, garners attention for its visually appealing design and efficient cooling capabilities, although some users note a slightly higher noise level. Both products have received positive feedback, but the choice between them largely depends on individual preferences regarding aesthetics and operational noise.
Which should you buy?
The decision between the Thermalright Assassin X 90 SE V2 and the Thermalright SI-100 White ARGB ultimately hinges on your specific needs and preferences. If you are looking for a cost-effective, quiet cooling solution with solid performance, the Assassin X 90 SE V2 is an excellent choice at C$24.90. However, if you desire a visually striking cooler with broader compatibility and do not mind spending a bit more at C$35.90, the SI-100 White ARGB may be the better option for your build.
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