CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - vs NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat

Pricing Comparison

The CORSAIR RM1200x SHIFT is priced at £174.98, making it significantly more expensive than the NZXT C850 Gold Core, which costs £89.99. This substantial price difference of £84.99 may influence buyers depending on their budget and power supply needs. While the CORSAIR model offers a higher wattage at 1200W, the NZXT still provides a respectable 850W, which is more than adequate for many mid-range systems. Essentially, if you are looking for a robust power supply without breaking the bank, the NZXT C850 Gold Core presents a more economical choice.

Power Output

When assessing power output, the CORSAIR RM1200x SHIFT delivers a maximum of 1200W, which is ideal for high-performance systems, especially those with multiple GPUs or demanding components. In contrast, the NZXT C850 Gold Core offers 850W, sufficient for most gaming rigs and general use, but may not support extreme setups as effectively as the CORSAIR. The power output difference of 350W could be crucial for users planning to upgrade or expand their system in the future, indicating that the CORSAIR might be a better investment for hardcore gamers or content creators.

Efficiency Ratings

Both power supplies boast an 80 PLUS Gold efficiency rating, indicating they are designed to deliver at least 87% efficiency at 20% and 100% loads. However, the NZXT C850 Gold Core further enhances its appeal with a Cybenetics Platinum certification for efficiency, which suggests superior performance regarding heat and power draw. This means that while both units are energy-efficient, the NZXT model may provide slightly better energy savings and lower heat output during demanding tasks. Therefore, if energy efficiency and lower operational costs are priorities, the NZXT could be the preferable option.

Cooling Solutions

The cooling systems of both power supplies are designed to ensure efficiency and reliability. The CORSAIR RM1200x SHIFT features a 140mm fluid dynamic bearing fan, which is engineered for high performance and low noise, contributing to its longevity. On the other hand, the NZXT C850 Gold Core is equipped with a 135mm fluid dynamic bearing fan that operates in a Zero RPM mode during light workloads, effectively reducing noise levels to below 15 dBA. While both fans are effective, the NZXT's Zero RPM mode can offer a quieter experience during less demanding tasks, appealing to users who prioritise a quiet computing environment.

Build Quality

The build quality of a power supply is crucial for reliability and performance. The CORSAIR RM1200x SHIFT is built with 100% 105°C-rated Japanese electrolytic capacitors, ensuring high-quality internal components that enhance power delivery and longevity. Meanwhile, the NZXT C850 Gold Core also promises high reliability with its 80 PLUS Gold efficiency, but it does not specify the same quality of internal components as the CORSAIR. Therefore, the use of premium components in the CORSAIR model may offer peace of mind for users concerned about durability and consistent performance over time.

Compatibility Features

In terms of compatibility, both power supplies are ATX 3.1 certified, which means they can support the latest components, including PCIe Gen 5.1 platforms. The CORSAIR RM1200x SHIFT provides fully modular micro-fit PSU connectors, allowing for streamlined cable management by connecting only the necessary cables. The NZXT C850 Gold Core is also compatible with next-gen GPUs and comes with a dual-colour 12V-2x6 connector, ensuring it meets the demands of modern graphics cards. While both units offer excellent compatibility, the fully modular design of the CORSAIR may appeal to those who value organisation and aesthetics in their builds.

User Experience

User experience can significantly impact the overall satisfaction with a product. The CORSAIR RM1200x SHIFT is designed for easy access with side-mounted modular connections, facilitating simpler cable management and installation. This feature is particularly beneficial for users who frequently modify their systems. In comparison, the NZXT C850 Gold Core has been awarded a Cybenetics noise certification, making it an excellent choice for users who prefer a quieter operation. Each power supply caters to different user needs, with the CORSAIR focusing on ease of installation and the NZXT emphasising silent operation.

Which should you buy?

Choosing between the CORSAIR RM1200x SHIFT and the NZXT C850 Gold Core ultimately depends on your specific needs and budget. The CORSAIR offers superior power output and premium build quality, making it suitable for high-performance systems and users seeking longevity. However, it comes at a higher price point of £174.98. On the other hand, the NZXT C850 Gold Core, priced at £89.99, delivers adequate performance for most users, enhanced energy efficiency, and quieter operation, making it a compelling option for budget-conscious builders. If you need more power and are willing to invest, the CORSAIR is the way to go, but for a balanced, cost-effective solution, the NZXT is hard to beat.