MONTECH Century II - 850W High-End ATX Gaming vs Thermaltake Smart 500W 80+ White Certified PSU,
Updated July 2026 — MONTECH Century II - 850W High-End ATX Gaming wins on warranty and modularity, Thermaltake Smart 500W 80+ White Certified PSU, wins on price.
The MONTECH Century II is the superior choice for high-performance gaming, while the Thermaltake Smart 500W is a budget-friendly option for basic builds.
Why MONTECH Century II - 850W High-End ATX Gaming is better
Power Output
850W vs 500W
Efficiency
80 Plus Gold vs 80 Plus White
Warranty
10 years vs 5 years
Why Thermaltake Smart 500W 80+ White Certified PSU, is better
Price
$39.99 vs $89.90
Cooling Fan
120mm ultra-quiet fan
Compact Size
Smaller dimensions
Overall score
Specifications
| Spec | MONTECH Century II - 850W High-End ATX Gaming | Thermaltake Smart 500W 80+ White Certified PSU, |
|---|---|---|
| Output | 850W | 500W |
| Efficiency | 80 Plus Gold | 80 Plus White |
| Warranty | 10 years | 5 years |
| Cooling Fan | High-end | 120mm ultra-quiet |
| Modularity | Fully Modular | Non-Modular |
Dimension comparison
Price Comparison
When it comes to price, the Thermaltake Smart 500W is the more economical choice at $39.99, which is about 56% less than the MONTECH Century II priced at $89.90. This significant price difference makes the Thermaltake model appealing for budget-conscious consumers or those building a basic gaming setup. The MONTECH power supply, however, justifies its higher cost with advanced features and a longer warranty, catering to enthusiasts looking for reliability and performance in high-demand gaming scenarios.
Power Output and Efficiency
The MONTECH Century II offers a robust 850W power output, significantly higher than the 500W provided by the Thermaltake Smart model. This difference makes the MONTECH a better option for high-performance gaming rigs or systems requiring more power for multiple GPU setups. Additionally, the MONTECH boasts an 80 Plus Gold certification, indicating high efficiency, while the Thermaltake holds an 80 PLUS White certification, which is less efficient at around 80%. The MONTECH’s superior power output and efficiency make it a compelling choice for users with demanding energy needs.
Modularity and Installation
Modularity is a key feature in power supplies that can greatly affect installation ease and cable management. The MONTECH Century II is fully modular, allowing users to connect only the cables they need, which helps to maintain a clean and organized build. In contrast, the Thermaltake Smart 500W does not specify modularity, suggesting a non-modular design that could lead to excess cables cluttering the interior of the case. For users who prioritize an easy installation and a tidy setup, the MONTECH is undoubtedly the better option.
Cooling Solutions
Cooling performance is essential for maintaining system stability and longevity. The MONTECH Century II includes a high-end cooling solution designed to operate quietly, although specific details on fan size or RPM are not disclosed. On the other hand, the Thermaltake Smart model is equipped with a 120mm ultra-quiet cooling fan that delivers excellent airflow while maintaining low noise levels. While both units aim for efficient cooling, the Thermaltake's specified fan size might appeal to those looking for a quieter operation in less demanding environments.
Warranty and Reliability
A power supply's warranty can be a significant indicator of its reliability and manufacturer confidence. The MONTECH Century II comes with a 10-year warranty, reflecting the brand's commitment to quality and performance under high stress. In contrast, the Thermaltake Smart 500W provides a more modest 5-year warranty. For consumers who plan to invest in a system that will be used for years, the longer warranty of the MONTECH could provide peace of mind regarding long-term reliability.
Build Quality and Components
Build quality is often tied to the components used within a power supply. The MONTECH Century II is built to high-end standards, featuring high-quality components that aim to ensure stable and reliable performance. It is designed for gamers who may push their systems to the limit. The Thermaltake Smart 500W also emphasizes high-quality components, but the absence of detailed specifications on the internal components makes it challenging to compare directly. Users seeking a power supply built for heavy usage may lean toward the MONTECH due to its premium design and higher output.
Compatibility and Future-Proofing
Compatibility is crucial when selecting a power supply, especially for future upgrades. The MONTECH Century II is ATX 3.1 and PCIe 5.1 ready, making it suitable for the latest hardware and ensuring it remains relevant as technology advances. The Thermaltake Smart 500W supports the older ATX 12V V2.3 and EPS 12V standards but may not support the latest GPU requirements, limiting its future-proofing capabilities. For gamers looking to invest in cutting-edge technology, the MONTECH’s compatibility with newer standards makes it a more forward-thinking choice.
Which should you buy?
In conclusion, choosing between the MONTECH Century II and the Thermaltake Smart 500W comes down to your specific needs and budget. The MONTECH offers superior power output, efficiency, modularity, and a longer warranty, making it ideal for high-performance gaming setups. However, if you're looking for a budget-friendly option for a basic build, the Thermaltake provides decent performance at a significantly lower price. Ultimately, if you prioritize advanced features and future-proofing, the MONTECH is the clear winner; for those on a tighter budget, the Thermaltake remains a solid, economical choice.

