NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs Seasonic Prime TX-1600 Noctua Edition

Pricing Comparison

The NZXT C850 SFX Gold is priced at £129.98, while the Seasonic Prime TX-1600 Noctua Edition commands a significantly higher price of £429.00. This stark contrast in pricing is indicative of the different target markets each power supply aims to serve. The NZXT model is designed for compact builds, making it an economical choice for users who need reliable power without breaking the bank. In comparison, the Seasonic model, with its advanced features and higher wattage, is aimed at high-performance workstations and gaming PCs, justifying its premium price tag.

Power Output and Efficiency

The NZXT C850 SFX Gold delivers 850W of power, which is ample for most compact systems and mid-range gaming rigs. Its 80 PLUS Gold rating ensures that it operates with high efficiency, reducing waste heat and energy consumption. On the other hand, the Seasonic Prime TX-1600 Noctua Edition offers an impressive 1600W of power, catering to users with demanding setups that require extensive power. With an 80 PLUS Titanium rating, it boasts a peak efficiency of up to 94% at 50% load, making it one of the most efficient options on the market. This significant difference in power output and efficiency ratings highlights the distinct use cases for each model.

Design and Build Quality

The NZXT C850 SFX Gold is crafted specifically for compact builds, utilising the SFX form factor to maximise space efficiency. Its design prioritises full-power capabilities while fitting seamlessly into small form factor cases. Conversely, the Seasonic Prime TX-1600 Noctua Edition is built for larger setups, featuring fully modular cabling for easier management and a Noctua-themed aesthetic that enhances its visual appeal. The renowned Noctua NF-A12x25 fan ensures ultra-quiet operation, contributing to a premium build quality that is characteristic of Seasonic products. Each power supply caters to different assembly requirements, with NZXT focusing on compactness and Seasonic prioritising high-performance aesthetics.

Cooling Solutions

Cooling is a crucial aspect of power supply performance. The NZXT C850 SFX Gold includes a 92 mm fluid dynamic bearing fan, which operates efficiently and quietly, thanks to its Zero RPM mode that allows for silent operation at lower loads. In contrast, the Seasonic Prime TX-1600 Noctua Edition features the highly acclaimed Noctua NF-A12x25 fan, which provides superior cooling performance while maintaining low noise levels, certified by Cybenetics Lambda A++. The Seasonic model also employs a semi-passive operation mode, where the fan remains off until the load reaches 50%, ensuring that it operates almost silently under typical use. This nuanced approach to cooling solutions highlights the differing priorities of each manufacturer.

Compatibility and Connectivity

The NZXT C850 SFX Gold is ATX 3.1 certified and includes a 600W 12V-2x6 connector, ensuring compatibility with modern graphics cards. This makes it a dependable choice for gamers and builders looking to power their systems with the latest technology. Conversely, the Seasonic Prime TX-1600 Noctua Edition is also ATX 3.1 and PCIe 5.1 compliant, featuring a similar 12V-2x6 connector for high-end graphics cards, including the NVIDIA GeForce RTX 4090 series. This extensive compatibility makes the Seasonic model more suitable for ultra-high-performance builds. The differences in connectivity options reflect the target audience for each product, with the NZXT focusing on compact builds and the Seasonic catering to high-end systems.

Noise Levels

Noise output is an important consideration for many PC builders. The NZXT C850 SFX Gold has a Cybenetics A- noise rating, indicating that it operates quietly during standard use. Its design with a fluid dynamic bearing fan contributes to a more peaceful computing experience. In contrast, the Seasonic Prime TX-1600 Noctua Edition is designed for ultra-quiet operation, with a Cybenetics Lambda A++ certification that signifies exceptionally low noise levels—approximately 8-10 dB(A) quieter than its regular counterpart. The semi-passive operation of the Seasonic allows for virtually silent performance under low loads, making it ideal for users prioritising quiet builds.

Warranty and Reliability

Both power supplies boast reliability, but their warranty offerings may influence the buyer's decision. While the NZXT C850 SFX Gold is built to deliver dependable power, specific warranty details are not provided in the data. The Seasonic Prime TX-1600 Noctua Edition, known for its exceptional build quality, typically comes with a 12-year warranty, reflecting the manufacturer's confidence in its durability and reliability. This extended warranty can be a deciding factor for users who want peace of mind regarding their investment, especially when considering the higher price point of the Seasonic model.

Which should you buy?

Choosing between the NZXT C850 SFX Gold and the Seasonic Prime TX-1600 Noctua Edition ultimately depends on your needs and budget. If you are constructing a compact PC and are seeking a cost-effective power supply that delivers reliable performance, the NZXT model is a solid choice at £129.98. However, if you require a high-performance power supply for an extensive setup and prioritise efficiency, quiet operation, and premium build quality, the Seasonic model, despite its hefty price of £429.00, offers features that justify the investment. Ultimately, understanding your specific requirements will guide you to the right decision for your build.