NZXT C850 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 850 Wa vs GIGABYTE P550SS Power Supply - PCIe 5.0

Price Comparison

The NZXT C850 Gold ATX 3.1 is significantly more expensive than the GIGABYTE P550SS, priced at £84.90 compared to £40.99. This £43.91 difference reflects the varying features and certifications of the two power supplies. While the higher price of the NZXT model may be off-putting for budget-conscious consumers, it offers advanced specifications that could justify the investment for gamers and power users seeking reliability and performance.

Power Output

When it comes to power output, the NZXT C850 Gold provides a robust 850 watts, making it a suitable choice for high-performance systems, particularly those equipped with demanding components like NVIDIA GeForce RTX 50 Series graphics cards. In contrast, the GIGABYTE P550SS offers a lower output of 550 watts, which may be adequate for less intensive builds but could limit future upgrades or high-end configurations. The significant difference in wattage could be a decisive factor for users planning to push their systems to the limit.

Efficiency Ratings

The efficiency ratings of these power supplies reflect their performance and potential cost savings. The GIGABYTE P550SS boasts an 80 PLUS Silver certification, indicating it operates with a minimum of 85% efficiency at 50% load, which is commendable for its price point. The NZXT C850 Gold, while not explicitly rated in the available data, is implied to meet high efficiency standards given its Gold designation. Generally, Gold-rated supplies achieve efficiencies of 87% or better at 50% load, which suggests that the NZXT model may provide better long-term energy savings.

Noise Levels

Noise levels are crucial for building a quiet PC environment, and in this regard, the NZXT C850 Gold excels with its ultra-low noise 135mm fluid dynamic bearing fan that operates silently under 50% load. This feature is particularly beneficial for gamers and professionals who require a distraction-free working space. On the other hand, while the GIGABYTE P550SS includes a 120mm Fluid Dynamic Bearing fan, the noise levels under load are not specified, leaving uncertainty about its performance in quieter builds.

Build Quality and Durability

Build quality is an essential factor influencing the longevity and reliability of power supplies. The NZXT C850 Gold is constructed using 100% premium Japanese capacitors, enhancing its hold-up time and minimising ripple noise. This high-quality construction is indicative of a power supply designed for stability and performance under demanding conditions. Conversely, the GIGABYTE P550SS, while built to be reliable, does not mention the use of premium components as explicitly as the NZXT model. This could suggest a difference in durability, especially for users pushing their systems hard.

Compatibility

Compatibility with modern standards is vital for future-proofing a power supply. The GIGABYTE P550SS meets the Intel ATX 3.0 standard and is compatible with ATX 3.1, ensuring it can support the latest hardware. The NZXT C850 Gold also complies with the ATX 3.1 standard, providing high-performance power delivery and stability for current and upcoming components. Both units cater to modern gaming and computing needs, but the NZXT's readiness for the latest graphics card technology may appeal more to high-end users.

Features and Additional Protections

In terms of additional features and protections, the GIGABYTE P550SS comes with several safety protections, including Over Voltage Protection (OVP), Over Power Protection (OPP), Short Circuit Protection (SCP), Under Voltage Protection (UVP), Over Current Protection (OCP), and Over Temperature Protection (OTP). These features are crucial for safeguarding the components of a PC against potential electrical issues. The NZXT C850 Gold does not explicitly list such protections but implies a high level of reliability through its premium construction and power delivery capabilities.

Which should you buy?

Choosing between the NZXT C850 Gold and the GIGABYTE P550SS largely depends on your specific needs and budget. If you require a high-output, efficient, and quiet power supply that can handle demanding components, the NZXT C850 Gold, priced at £84.90, may be the better option despite its higher cost. However, if you are looking for a more budget-friendly choice that still meets modern power standards and offers essential protections, the GIGABYTE P550SS at £40.99 could be a wise choice. Ultimately, your decision should be based on the performance needs of your system and your willingness to invest in quality.