JUSTOP Black 650W PSU vs NZXT C850 Gold Core - 850W ATX 3.1 Power Supply - 80 PLUS Gold - Cybenetics Plat

Price Comparison

When considering the price, the JUSTOP Black 650W PSU is significantly more affordable at £29.99, while the NZXT C850 Gold Core is priced at £89.99. The substantial difference of £60 indicates that the JUSTOP model may appeal to budget-conscious consumers looking for basic power supply functionality. However, the higher price of the NZXT model can be justified by its advanced features and efficiency ratings, appealing to users who require a more reliable and powerful option for demanding systems.

Power Output

The power output of a power supply is crucial for system stability, especially for high-performance setups. The JUSTOP Black 650W PSU offers a solid 650W output, which is adequate for most mid-range systems. In contrast, the NZXT C850 Gold Core provides a higher output of 850W, making it suitable for high-end gaming builds and workstations that demand more power, particularly with next-generation GPUs. Users planning on utilising power-hungry components should consider the NZXT model for its higher wattage.

Efficiency Ratings

Efficiency is a key factor in power supply performance, impacting both energy consumption and system heat. The NZXT C850 Gold Core boasts an 80 PLUS Gold rating, indicating it operates at higher efficiency levels, especially under load, leading to reduced power draw and heat generation. On the other hand, the JUSTOP Black 650W PSU does not specify an efficiency rating, which may suggest it operates at a lower efficiency compared to the NZXT. For users prioritising energy savings and environmental considerations, the NZXT model stands out.

Cooling Solutions

Effective cooling is essential for maintaining optimal performance and longevity of components. The JUSTOP Black 650W PSU features a 120mm cooling fan, which aids in dissipating heat but may not be as advanced as the cooling solution found in the NZXT C850 Gold Core. The NZXT model is equipped with a 135mm fluid dynamic bearing fan, designed for whisper-quiet operation and includes a Zero RPM mode during light workloads, enhancing its efficiency and reducing noise levels. This makes the NZXT more suitable for users who value a quiet computing environment.

Compatibility with Modern Components

In terms of compatibility, the NZXT C850 Gold Core stands out as it is ATX 3.1 certified and PCIE 5.1 ready, which supports next-generation GPUs with dual-colour 12V-2x6 connectors. This future-proofing makes it an excellent choice for gamers and professionals looking to utilise the latest hardware. The JUSTOP Black 650W PSU, while functional, may not offer the same level of compatibility with the newest graphics cards, potentially limiting its usability for those planning to upgrade their systems in the near future.

Safety Features

Safety features are paramount in power supplies to prevent damage to components. The JUSTOP Black 650W PSU is equipped with several protective measures, including overvoltage protection, over power protection, short circuit protection, and thermal overload cut-off protection. These features ensure a safe power delivery. The NZXT C850 Gold Core also has robust safety features, contributing to its reliability. While both models provide safety assurances, the extensive protections of the JUSTOP are an appealing aspect for consumers concerned about system safety.

Noise Levels

Noise levels can significantly impact the user experience, especially in quiet environments. The NZXT C850 Gold Core excels in this area, with a Cybenetics noise certification that allows for near-silent operation, rated at A++ for its efficiency. In contrast, the JUSTOP Black 650W PSU does not provide information about its noise levels, which may lead to uncertainty regarding its performance in quiet settings. For users who prefer a silent operation, the NZXT is clearly the better choice.

Which should you buy?

Choosing between the JUSTOP Black 650W PSU and the NZXT C850 Gold Core ultimately depends on your specific needs and budget. If you are looking for a basic, budget-friendly power supply that delivers solid performance for everyday tasks, the JUSTOP model at £29.99 is a practical option. However, if you require a power supply that supports high-performance components, offers superior efficiency, quieter operation, and advanced safety features, the NZXT C850 Gold Core at £89.99 is worth the investment. For users planning future upgrades or demanding applications, the NZXT model is the clear winner.