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Redragon RGPS-850W 80+ Gold vs Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 &

Updated August 2026 — Redragon RGPS-850W 80+ Gold wins on modularity and efficiency, Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 & wins on warranty.

The Redragon RGPS-850W offers superior performance and features compared to the Thermaltake Smart BM3 750W, making it the better choice for high-end users.

Why Redragon RGPS-850W 80+ Gold is better

Power Output

850W vs 750W

Efficiency

80 Plus Gold vs Bronze

Modularity

Fully modular vs semi-modular

Why Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 & is better

Price

$75.99 vs $124.99

Warranty

5-year warranty vs unspecified

Cooling

Smart Zero Fan function

Overall score

Redragon RGPS-850W 80+ Gold
88
Thermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 &
75

Specifications

SpecRedragon RGPS-850W 80+ GoldThermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 &
Certification80 Plus Gold80 Plus Bronze
Fan TypeZero RPM Mode120mm FDB Fan
Capacitors100% Japanese105°C Japanese
Size160mm150mm
CompatibilityATX 3.1 & PCIe 5.1ATX 3.1 & PCIe 5

Dimension comparison

Redragon RGPS-850W 80+ GoldThermaltake Smart BM3 750W 80Plus Bronze ATX 3.1 &

Pricing Comparison

When it comes to pricing, the Thermaltake Smart BM3 750W is significantly more affordable than the Redragon RGPS-850W. The Smart BM3 is priced at $75.99, while the RGPS-850W costs $124.99, making the Thermaltake about 39% cheaper. This price difference may appeal to budget-conscious consumers who still want reliable power for their systems. However, the higher price for the Redragon may reflect its enhanced features and certification, which could justify the cost for those seeking superior performance.

Power Output and Efficiency

The Redragon RGPS-850W offers a power output of 850 watts, exceeding the Thermaltake's 750 watts. This extra capacity can be crucial for high-performance builds, especially those utilizing demanding graphics cards. Moreover, the RGPS-850W boasts an 80 Plus Gold certification, indicating superior energy efficiency compared to the Smart BM3's 80 Plus Bronze certification. This means the Redragon will deliver cooler operation and less noise while potentially lowering electricity bills over time, making it an excellent choice for power users and gamers who prioritize efficiency.

Modular Design

The Redragon RGPS-850W features a fully modular design, allowing users to connect only the cables they need. This can lead to better airflow and a tidier build. In contrast, the Thermaltake Smart BM3 is a semi-modular power supply, meaning some cables are permanently attached. While the semi-modular design is still a step up from non-modular options, it may not provide the same level of customization and neatness that a fully modular unit can. For users who value cable management, the Redragon may be the superior option.

Compatibility Features

Both power supplies are designed to meet modern standards, but the Redragon RGPS-850W has a slight edge with its upgraded ATX 3.1 and PCIe 5.1 readiness. This means it is built to support the latest hardware, including next-generation graphics cards like the NVIDIA 4090 and 4080 series. The Thermaltake also supports PCIe Gen 5 but is positioned more as a value option. Users looking to future-proof their systems may prefer the Redragon for its advanced compatibility features, ensuring they can take full advantage of the latest technology.

Cooling Solutions

Cooling is another area where the two power supplies differ. The Redragon RGPS-850W is equipped with a Zero RPM Mode fan that only activates at temperatures above 60°C, which helps to minimize noise during lighter loads. The Thermaltake Smart BM3 utilizes a 120mm fluid dynamic bearing fan with a Smart Zero Fan function, which prevents the fan from spinning until the load exceeds 20% of the power supply. While both units aim to reduce noise, the Redragon’s approach may offer quieter operation during light usage, a feature that could appeal to gamers and professionals working in noise-sensitive environments.

Build Quality and Durability

When it comes to build quality, both power supplies use high-quality Japanese capacitors. However, the Redragon RGPS-850W emphasizes its use of 100% Japanese capacitors to ensure maximum reliability and durability. The Thermaltake Smart BM3 also features a 105°C-rated Japanese capacitor, which contributes to its longevity. Both units provide good durability, but the Redragon's focus on 100% Japanese components may give it an edge in terms of long-term reliability, especially for users concerned about the lifespan of their hardware.

Warranty and Support

The Thermaltake Smart BM3 offers a generous five-year warranty, which can provide peace of mind for consumers. In contrast, the warranty details for the Redragon RGPS-850W are not specified, which may be a point of concern for potential buyers. A longer warranty typically reflects a manufacturer's confidence in their product, and it could influence purchasing decisions, especially for customers who prioritize after-sales support and product longevity.

Which should you buy?

In conclusion, the choice between the Redragon RGPS-850W and the Thermaltake Smart BM3 largely depends on your specific needs and budget. The Redragon RGPS-850W is ideal for users seeking a high-performance solution with superior efficiency, modularity, and modern compatibility features, albeit at a higher price point of $124.99. On the other hand, the Thermaltake Smart BM3, priced at $75.99, serves as a solid option for budget-conscious consumers who still want a reliable and efficient power supply. If you prioritize advanced features and future-proofing, the Redragon is the way to go; if you need a more economical choice without sacrificing too much quality, the Thermaltake is a commendable alternative.