vsversusfinder

CORSAIR RM850e Fully Modular Low-Noise ATX Power vs Thermaltake Smart 500W 80+ White Certified PSU,

Updated July 2026 — CORSAIR RM850e Fully Modular Low-Noise ATX Power wins on power and modularity, Thermaltake Smart 500W 80+ White Certified PSU, wins on noise.

The CORSAIR RM850e is a superior choice for high-performance needs, while the Thermaltake Smart 500W is a budget-friendly option for basic builds.

Why CORSAIR RM850e Fully Modular Low-Noise ATX Power is better

Power Output

850 watts vs 500 watts

Efficiency

Cybenetics Gold vs 80 PLUS

Warranty

7 years vs 5 years

Why Thermaltake Smart 500W 80+ White Certified PSU, is better

Price

$39.99 vs $94.99

Basic Use

Adequate for simple builds

Size

More compact for basic setups

Overall score

CORSAIR RM850e Fully Modular Low-Noise ATX Power
90
Thermaltake Smart 500W 80+ White Certified PSU,
65

Specifications

SpecCORSAIR RM850e Fully Modular Low-Noise ATX PowerThermaltake Smart 500W 80+ White Certified PSU,
CertificationCybenetics Gold80 PLUS
Fan Size120mm120mm
Capacitors105°CNot specified
ModularityFully ModularNon-Modular
Cooling TypeRifle BearingStandard

Dimension comparison

CORSAIR RM850e Fully Modular Low-Noise ATX PowerThermaltake Smart 500W 80+ White Certified PSU,

Overview of Power Supplies

When choosing a power supply for your PC, efficiency, performance, and noise level are critical factors. The CORSAIR RM850e and the Thermaltake Smart 500W offer distinct features tailored for different user needs. The CORSAIR RM850e is priced at $94.99, while the Thermaltake Smart 500W is significantly cheaper at $39.99, making it about 58% less expensive. However, this lower price comes with compromises in power output and efficiency that may affect your decision.

Power Output Comparison

The CORSAIR RM850e delivers a robust 850 watts of continuous power, which is ideal for high-performance systems and gaming rigs that demand more energy. In contrast, the Thermaltake Smart 500W provides only 500 watts of continuous output. This difference in power capacity means that the CORSAIR RM850e is better suited for users who plan to run multiple graphics cards or overclock their CPUs, as it supports a more demanding configuration.

Efficiency Ratings

Efficiency is crucial for both performance and energy consumption. The CORSAIR RM850e boasts Cybenetics Gold efficiency, ensuring that it operates with minimal wasted energy. This high efficiency translates into lower electricity bills and less heat generated during operation. Meanwhile, the Thermaltake Smart 500W is 80 PLUS certified, providing about 80% efficiency under typical load. Although this is a respectable rating, it falls short compared to the CORSAIR RM850e's superior efficiency, making it less ideal for long-term, high-load scenarios.

Noise Levels

Noise can often be a concern when selecting a power supply unit, especially in quiet environments. The CORSAIR RM850e features a 120mm rifle-bearing fan designed to keep noise levels low, even under full loads. This is a significant advantage for gamers and professionals who value a silent operation. On the other hand, the Thermaltake Smart 500W is equipped with a 120mm cooling fan as well, but it does not emphasize low noise levels to the same extent as the CORSAIR option. If a quiet computing experience is a priority, the CORSAIR RM850e is the superior choice.

Build Quality and Components

The build quality of a power supply can significantly impact its reliability and longevity. The CORSAIR RM850e is constructed with industrial-grade, 105°C-rated capacitors, which provide stable and dependable electrical performance. This level of quality assurance is backed by a seven-year warranty, indicating the manufacturer’s confidence in the product's durability. In contrast, while the Thermaltake Smart 500W also uses high-quality components, it does not specify the same level of capacitor rating or warranty duration, which may raise concerns about its long-term reliability.

Compatibility and Features

The CORSAIR RM850e is designed to be fully modular, allowing users to connect only the cables necessary for their specific builds. This feature simplifies cable management and enhances airflow within the case. Additionally, it complies with the latest ATX 3.1 and PCIe 5.1 standards, which means it is fully prepared to handle the latest graphics cards and motherboards. The Thermaltake Smart 500W, while compatible with mainstream builds, has more limited modularity and fewer connections, which could restrict flexibility in more complex systems.

Warranty and Support

Warranty and customer support are essential considerations when investing in a power supply. The CORSAIR RM850e comes with a seven-year warranty, reflecting the brand's commitment to quality and customer satisfaction. In contrast, the Thermaltake Smart 500W offers a five-year warranty, which, while still substantial, is shorter than that of the CORSAIR. This difference in warranty periods may influence buyers who prioritize reliability and support in their purchasing decisions.

Which should you buy?

In summary, the choice between the CORSAIR RM850e and the Thermaltake Smart 500W hinges on your specific needs and budget. The CORSAIR RM850e, priced at $94.99, is a powerhouse for serious gamers and professionals, offering superior efficiency, noise management, and build quality. On the other hand, the Thermaltake Smart 500W, at just $39.99, serves as a budget-friendly option for basic builds but lacks the performance and features of the CORSAIR model. If you seek reliability and performance for demanding tasks, the CORSAIR RM850e is the better investment. However, if budget constraints are paramount and your power needs are modest, the Thermaltake Smart 500W will suffice.