NZXT C850 SFX Gold - 850W SFX ATX 3.1 Power Supply - 80 Plus Gold - Cybenetics P vs Asus ROG Strix 1200W Platinum PSU

Price Comparison

When it comes to pricing, the NZXT C850 SFX Gold is significantly more affordable at £129.98 compared to the Asus ROG Strix 1200W Platinum PSU, which is priced at £179.99. This means that the NZXT model offers a difference of £50, making it a more budget-friendly option for those looking to build or upgrade their power supply without breaking the bank. While the Asus model may justify its higher price with additional features, the NZXT's cost-effectiveness cannot be overlooked, especially for gamers and builders on a tighter budget.

Power Output

Power output is a critical factor, and here the Asus ROG Strix 1200W Platinum PSU takes the lead with a robust 1200 watts. In contrast, the NZXT C850 SFX Gold provides 850 watts. This difference of 350 watts means that the Asus power supply is better suited for high-performance systems that demand more power, such as those with multiple GPUs or overclocked CPUs. However, for users with standard setups or compact builds, the NZXT’s 850 watts should suffice, offering a reliable performance without unnecessary excess.

Efficiency Ratings

Efficiency can greatly impact power consumption and cooling needs. The NZXT C850 boasts an 80 PLUS Gold rating, which indicates high efficiency and lower energy waste, while the Asus ROG Strix is rated Platinum, which is even more efficient. The Platinum rating means that the Asus power supply can deliver superior power efficiency, potentially reducing electricity bills and improving thermal performance. Thus, while both options are efficient, the Asus provides a higher standard of efficiency that might appeal to those looking for long-term savings and optimal performance.

Design and Form Factor

The design and form factor of a power supply can affect its compatibility with various cases. The NZXT C850 SFX Gold is specifically designed for compact builds, utilising the SFX form factor, which maximises space efficiency in small form factor cases. This makes it an excellent choice for users with limited space. On the other hand, the Asus ROG Strix, while larger and more traditional in form factor, features large ROG heatsinks that facilitate better cooling and lower noise levels, making it ideal for high-performance builds that may require more room for airflow.

Cooling Technology

Cooling technology is essential for maintaining system performance and longevity. The NZXT C850 incorporates a 92 mm fluid dynamic bearing (FDB) fan that offers efficient cooling with a Zero RPM mode for silent operation. This is particularly beneficial for quiet builds. In contrast, the Asus ROG Strix features dual ball fan bearings, which are designed to last up to twice as long as traditional sleeve bearings. This durability can translate to a longer lifespan for the power supply. Both units emphasise quiet operation, but the Asus may have an edge in longevity due to its advanced bearing technology.

Voltage Stability

Voltage stability is crucial for system performance and component protection. The NZXT C850 SFX Gold employs low ripple noise, tight voltage regulation, and long hold-up time to ensure stable power delivery. This can help protect high-end components and maintain overall system stability. Conversely, the Asus ROG Strix introduces a "GPU-FIRST" voltage sensing technology that enhances voltage delivery by up to 45%, providing a more stable power supply to graphics cards. This feature could be particularly advantageous for gamers and professionals who rely on peak performance from their GPUs.

Brand Reputation and Warranty

Brand reputation can influence purchasing decisions, and both NZXT and Asus are well-regarded in the industry. NZXT is known for its focus on compact and efficient designs, while Asus has a strong reputation for high-performance gaming hardware. The reliability of the products is further underscored by the warranties offered. While specific warranty details are not provided, Asus typically offers robust customer support and warranty terms for its ROG series, which may appeal to users prioritising peace of mind with their investment.

Which should you buy?

Ultimately, the choice between the NZXT C850 SFX Gold and the Asus ROG Strix 1200W Platinum PSU depends on your needs and budget. If you are looking for a cost-effective, compact solution for a smaller build, the NZXT C850 at £129.98 provides excellent value with its solid efficiency and reliable performance. However, if you require higher power output for a more demanding setup and are willing to invest an extra £50 for superior efficiency and advanced features, the Asus ROG Strix at £179.99 may be the better choice. Consider your specific requirements and budget constraints to make an informed decision.