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CORSAIR RM850e vs NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat

Updated August 2026The CORSAIR RM850e offers a more budget-friendly option with solid performance, while the NZXT C850 Gold Core excels in efficiency and quiet operation.

The CORSAIR RM850e offers a more budget-friendly option with solid performance, while the NZXT C850 Gold Core excels in efficiency and quiet operation.

Why CORSAIR RM850e is better

lower price

CORSAIR RM850e costs £85.99

modular design

Fully modular cabling reduces clutter

reliable capacitors

105°C-rated capacitors ensure steady power delivery

Why NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat is better

higher efficiency

NZXT C850 Gold Core has 80 PLUS Gold and Cybenetics Platinum ratings

quieter operation

NZXT C850 Gold Core operates under 15 dBA

better GPU support

Dual-color 12V-2x6 connector for next-gen GPUs

Overall score

CORSAIR RM850e
85
NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat
88

Specifications

SpecCORSAIR RM850eNZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat
BrandCorsairNZXT
Power Output850W850W
CertificationATX 3.1ATX 3.1 & 80 PLUS Gold
Fan Size120mm135mm
Noise Rating<20 dBA<15 dBA
Modular TypeFully ModularModular

Dimension comparison

CORSAIR RM850eNZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat

Overview of the Products

When comparing the CORSAIR RM850e and the NZXT C850 Gold Core, both power supplies offer compelling features for modern builds. The CORSAIR RM850e is priced at £85.99, while the NZXT C850 Gold Core retails for £89.99, making the CORSAIR a slightly more economical choice. Both models are designed for high-performance systems, ensuring compatibility with the latest hardware standards such as ATX 3.1 and PCIe 5.1.

Design and Build Quality

The design of both power supplies is sleek and modern, reflecting their status as premium products. The CORSAIR RM850e features fully modular cabling, allowing users to connect only the necessary cables for their system, thereby reducing clutter. In contrast, the NZXT C850 Gold Core also supports modular connections but is particularly noted for its dual-colour 12V-2x6 connector, designed for optimal performance with next-gen GPUs. This aspect may provide a slight edge in terms of user-friendliness during installation.

Efficiency Ratings

Efficiency is a critical aspect of power supplies, and both models excel in this area. The CORSAIR RM850e is Intel ATX 3.1 certified, delivering reliable performance with 105°C-rated capacitors that ensure steady power delivery. Meanwhile, the NZXT C850 Gold Core boasts an 80 PLUS Gold rating and a Cybenetics Platinum efficiency rating, which indicates it performs exceptionally well under load, reducing heat and power draw. Both units promise efficient operation, but the NZXT's dual certification may attract users prioritising energy conservation.

Cooling Solutions

Cooling performance is crucial for maintaining system stability, especially under heavy loads. The CORSAIR RM850e employs a 120mm rifle bearing fan equipped with a specially calculated fan curve to minimise noise, even when fully loaded. On the other hand, the NZXT C850 Gold Core features a 135mm fluid dynamic bearing fan that operates in Zero RPM mode during lighter workloads, ensuring almost silent operation. With both units designed for quiet performance, users can expect minimal disruption from either power supply.

Noise Levels

Noise levels can significantly affect the user experience, particularly in gaming or multimedia setups. The CORSAIR RM850e is designed to keep fan noise low, while the NZXT C850 Gold Core is Cybenetics noise certified for near-silent performance, with a rating of under 15 dBA under typical conditions. This performance may appeal to users who seek a quiet environment, making the NZXT potentially more attractive for noise-sensitive applications.

Compatibility with Modern Hardware

Both power supplies are engineered to support modern hardware, including high-end GPUs. The CORSAIR RM850e is compliant with the ATX 3.1 standard, enabling it to handle transient power excursions from GPUs effectively. Similarly, the NZXT C850 Gold Core is designed with next-gen GPUs in mind, featuring a dedicated dual-colour connector for safe and stable power delivery. While both units are compatible with the latest technology, the specific design features of the NZXT may offer additional assurance for users planning to use cutting-edge graphics cards.

Price and Value

Pricing plays a significant role in the decision-making process, and the CORSAIR RM850e is available for £85.99, making it the more budget-friendly option compared to the NZXT C850 Gold Core, which costs £89.99. Despite the slight price difference, both power supplies offer excellent value through their performance and efficiency ratings. Users will need to consider whether the additional features of the NZXT justify the higher cost.

Which should you buy?

Ultimately, choosing between the CORSAIR RM850e and the NZXT C850 Gold Core comes down to specific user needs. The CORSAIR RM850e's lower price point and solid efficiency make it an excellent choice for those on a budget. However, the NZXT C850 Gold Core offers advanced features like Cybenetics Platinum efficiency and quieter operation, which may appeal to users prioritising performance and noise levels. Depending on individual preferences and system requirements, either power supply could be the ideal choice for a reliable and efficient setup.

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CORSAIR RM850e vs NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat | versusfinder