NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs Gigabyte P750BS 80 Plus Bronze Non Modular 750w Power Supply Unit

Price Comparison

When it comes to pricing, the NZXT C850 SFX Gold is significantly more expensive at £129.98 compared to the Gigabyte P750BS, which is priced at £65.01. This difference of £64.97 reflects the higher efficiency rating and advanced features of the NZXT model. The NZXT C850 offers an 80 PLUS Gold certification, while the Gigabyte P750BS holds an 80 PLUS Bronze certification. Therefore, if budget is a primary concern, the Gigabyte option could be more appealing, providing a decent power supply without breaking the bank.

Efficiency Ratings

The efficiency ratings between the two power supplies are quite distinct. The NZXT C850 SFX Gold boasts an 80 PLUS Gold certification, indicating a higher efficiency level that reduces energy consumption and heat output compared to the Gigabyte P750BS, which is certified at the 80 PLUS Bronze level. This means the NZXT model is designed to convert more of the electricity drawn from the wall into usable power for your components, making it a more energy-efficient choice in the long run, especially for demanding setups.

Size and Form Factor

The form factor is another key differentiator. The NZXT C850 is designed for compact builds, featuring an SFX form factor that optimises space in small form factor (SFF) cases. This is ideal for users looking to maximise their build in a limited space. In contrast, the Gigabyte P750BS does not specifically cater to compact builds, as it is a standard ATX power supply. Therefore, if you are building a compact system, the NZXT C850's smaller size may provide a significant advantage.

Cooling Solutions

Cooling solutions vary significantly between the two models. The NZXT C850 is equipped with a 92 mm fluid dynamic bearing (FDB) fan, which not only offers durable and efficient cooling but also features a Zero RPM mode for silent operation during low loads. This means that under light usage, the fan may not spin at all, contributing to a quieter system. On the other hand, the Gigabyte P750BS employs a larger 120mm FDB fan but does not mention a silent operation mode. This could lead to noisier performance under certain conditions, making the NZXT C850 a better choice for those who prioritise quiet operation.

Protection Features

Both power supplies come with various protection features, but their specifications differ. The Gigabyte P750BS includes 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). These features are crucial for safeguarding components from potential damage due to power issues. The NZXT C850 also offers reliable power delivery with low ripple noise and tight voltage regulation, which helps to maintain system stability, although specific protective features were not listed. This makes the Gigabyte model potentially more robust in terms of protection mechanisms.

Compatibility with Modern Systems

In terms of compatibility, the NZXT C850 is specifically designed with modern systems in mind, featuring ATX 3.1 certification and a 600W 12V-2x6 connector. This ensures safe power delivery, especially for high-performance graphics cards that require substantial power. Conversely, the Gigabyte P750BS does not highlight specific modern compatibility features, which may raise questions about its performance with the latest hardware. For users planning to build a high-end gaming rig or work with demanding applications, the NZXT C850 is likely the more compatible choice.

Noise Levels

When it comes to noise levels, the NZXT C850 SFX Gold stands out with its Cybenetics A- noise rating, indicating quieter operation. Its Zero RPM mode allows for silent performance under low loads, which is a significant advantage for users who prioritise a quiet environment. In comparison, while the Gigabyte P750BS features a silent FDB fan, it does not specify a noise rating or a silent operation mode. This may lead to higher noise levels during operation, which could be a consideration for users sensitive to sound.

Which should you buy?

In conclusion, the choice between the NZXT C850 SFX Gold and the Gigabyte P750BS ultimately depends on your specific needs and budget. If you are looking for a power supply that excels in efficiency, compactness, and quiet operation, the NZXT C850 is worth the investment at £129.98. On the other hand, if budget constraints are a priority and you need a basic power supply for standard builds, the Gigabyte P750BS at £65.01 offers solid performance at a lower price. Evaluate your requirements to make the best choice for your system.