NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs Gigabyte UD850GM PG5 ICE 80 Plus Gold Fully Modular 850w PCIe 5.0 White Power Su

Price Comparison

When it comes to price, the Gigabyte UD850GM PG5 ICE is the more economical option at £99.61, while the NZXT C850 SFX Gold is priced at £129.98. This represents a significant difference of £30.37, making the Gigabyte model a more budget-friendly choice for those looking for an 850W power supply. The cost-effectiveness of the Gigabyte unit does not compromise its functionality, as it maintains an impressive range of features that cater to high-performance systems.

Design and Form Factor

Design-wise, the NZXT C850 SFX Gold is tailored specifically for compact builds with its SFX form factor, optimising space efficiency in smaller form factor (SFF) cases. In contrast, the Gigabyte UD850GM PG5 ICE features a fully modular design, allowing for flexible installation and improved cable management. This modular approach can aid in reducing clutter within a case, which is particularly advantageous for users who value aesthetics and airflow. Both designs serve distinct purposes, with the NZXT focusing on compactness and the Gigabyte on modularity.

Efficiency Ratings

The NZXT C850 SFX Gold boasts an 80 PLUS Gold and Cybenetics Platinum efficiency rating, indicating superior energy efficiency and reduced heat output. Conversely, the Gigabyte UD850GM PG5 ICE also carries the 80 PLUS Gold certification, ensuring that it delivers efficient power usage. While both power supplies are energy-efficient, the added Cybenetics rating of the NZXT may appeal to users prioritising minimal environmental impact and energy savings, especially in high-load scenarios.

Cooling Solutions

Both power supplies implement advanced cooling solutions to maintain optimal temperatures during operation. The NZXT C850 SFX Gold features a 92 mm fluid dynamic bearing (FDB) fan with a Zero RPM mode for silent performance, ensuring minimal noise during low load. On the other hand, the Gigabyte UD850GM PG5 ICE utilises a 120mm smart hydraulic bearing (HYB) fan, which promises effective thermal management and noise reduction. While the NZXT prioritises silence with its Zero RPM capability, the larger Gigabyte fan may provide enhanced cooling efficiency under heavy loads.

Power Delivery and Compatibility

The NZXT C850 SFX Gold supports ATX 3.1 certification and includes a 600W 12V-2x6 connector, ensuring reliable power delivery for modern graphics cards. Meanwhile, the Gigabyte UD850GM PG5 ICE is designed to be Intel ATX 3.1 and PCIe Gen 5.1 ready, highlighting its compatibility with the latest technology. Both power supplies deliver powerful single +12V rails, but the NZXT’s specific connector caters to high-end GPUs, which may be a deciding factor for gamers and professionals relying on robust graphics performance.

Build Quality and Components

The NZXT C850 SFX Gold prides itself on its premium build quality, utilising high-grade components to ensure durability and long-lasting performance. Similarly, the Gigabyte UD850GM PG5 ICE is equipped with 100% Japanese capacitors, renowned for their reliability and longevity. Both brands are known for their commitment to quality, but the emphasis on Japanese components in the Gigabyte unit may resonate with users who appreciate superior manufacturing standards.

Protection Features

Protection is paramount in power supplies, and both models are equipped with an array of safety measures. The NZXT C850 SFX Gold features low ripple noise, tight voltage regulation, and a long hold-up time, contributing to stable system performance and component safety. In comparison, the Gigabyte UD850GM PG5 ICE offers multiple protections, including OVP (Over Voltage Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), and OTP (Over Temperature Protection). While both power supplies provide robust protection, the Gigabyte’s comprehensive safety features give it an edge for users prioritising system security.

Which should you buy?

In conclusion, the choice between the NZXT C850 SFX Gold and the Gigabyte UD850GM PG5 ICE largely depends on individual needs and preferences. If you are looking for a power supply designed specifically for compact builds with quieter operation, the NZXT C850 SFX Gold is an excellent choice, albeit at a higher price of £129.98. However, if budget is a primary concern and you desire a fully modular design with robust protection features, the Gigabyte UD850GM PG5 ICE at £99.61 presents a compelling option. Ultimately, both power supplies offer excellent performance and efficiency, making them worthy contenders in the 850W market.