CORSAIR SF850 vs be quiet! Pure Power 13 M 1000W Power Supply

Price Comparison

When it comes to pricing, the be quiet! Pure Power 13 M 1000W Power Supply is the more economical choice at £99.99, compared to the CORSAIR SF850, which is priced at £149.99. This represents a substantial £50 saving for consumers looking for a reliable power supply without breaking the bank. The difference in price can be particularly significant for budget-conscious builders, especially those equipping systems with high-performance components. Given the competitive pricing, the be quiet! unit may appeal more to those prioritising cost without sacrificing quality.

Power Output

The be quiet! Pure Power 13 M offers a robust 1000W of continuous power, which is significantly higher than the 850W provided by the CORSAIR SF850. This additional power output means that the be quiet! model is better suited for demanding gaming rigs or workstations requiring substantial energy, particularly during peak loads. Furthermore, the Pure Power 13 M supports power excursions up to double its rated output, ensuring it can handle sudden spikes in demand. If you're building a high-end system with multiple GPUs or power-hungry components, the extra wattage from the be quiet! may give it an edge.

Efficiency Ratings

The efficiency ratings of power supplies can greatly influence their performance and operational costs. The CORSAIR SF850 boasts an impressive 80 PLUS Platinum rating, while the be quiet! Pure Power 13 M is certified 80 PLUS Gold. This indicates that the SF850 operates at a higher efficiency level, reducing energy waste and potentially lowering electricity bills over time. Specifically, the CORSAIR unit is designed to deliver efficiency of up to 92%, compared to the be quiet! model's maximum of 94.4%. However, the difference may not be drastically noticeable for everyday users, but for those seeking the utmost efficiency, the SF850 could be the preferred option.

Modular Design

Both power supplies feature a fully modular design, which enhances cable management and improves airflow within the PC case. The CORSAIR SF850 utilises Type-5 Micro-Fit PSU connectors, allowing for flexible cabling that is especially beneficial in smaller cases. In contrast, the be quiet! Pure Power 13 M simplifies cable management by leaving out unnecessary cables, resulting in a tidier setup. This aspect is crucial for users focused on aesthetics and airflow, as cluttered cables can obstruct airflow and lead to higher temperatures. Both units excel in this category, but the specific design features may cater to different user preferences.

Cooling Solutions

Cooling performance is essential for maintaining the longevity and efficiency of a power supply. The CORSAIR SF850 includes a 92mm PWM cooling fan designed for powerful yet quiet operation, thanks to its fluid dynamic bearing. This ensures that even under load, the fan operates quietly, which is a significant benefit for users seeking a silent build. On the other hand, the be quiet! Pure Power 13 M features a fan that turns off completely under low loads, making it exceptionally silent during less demanding operations. This unique feature can be particularly appealing for those constructing ultra-quiet systems or who prioritise a noise-free environment.

Compatibility with New Technologies

In the ever-evolving landscape of PC hardware, compatibility with new technologies is crucial. The CORSAIR SF850 is ATX 3.1 compliant and PCIe 5.1 ready, which makes it suitable for the latest graphics cards and components. This future-proofing can be a major consideration for tech enthusiasts looking to upgrade over time. Similarly, the be quiet! Pure Power 13 M is also ATX 3.1 compliant and includes native integration for the 12V-2x6 connector, ensuring it is ready to support next-generation GPUs. Both power supplies are well-equipped for modern systems, though the CORSAIR's specific focus on PCIe 5.1 may appeal to users planning to use the latest technology.

Build Quality and Reliability

Build quality is a critical factor for any power supply, impacting its reliability and performance. The CORSAIR SF850 is constructed with 105°C rated Japanese capacitors, which are known for their durability and reliability under stress. This attention to detail suggests that the SF850 is designed for sustained performance and longevity. In comparison, the be quiet! Pure Power 13 M features LLC topology, which provides excellent voltage regulation and efficiency. While both units are built to a high standard, the choice may come down to personal preference regarding component quality and the reputation of the brands for reliability.

Which should you buy?

Ultimately, the decision between the CORSAIR SF850 and the be quiet! Pure Power 13 M depends on your individual needs and preferences. If you are looking for a more affordable option with higher wattage and a focus on quiet operation, the be quiet! model is an excellent choice at £99.99. However, if you prioritise efficiency, compact design for smaller builds, and are willing to invest more for premium features, the CORSAIR SF850, priced at £149.99, may be worth the extra expenditure. Both power supplies are strong contenders in the market, catering to different types of users in the gaming and PC building communities.