CORSAIR SF850 vs CORSAIR RM Series

Price Comparison

When considering the price point, the CORSAIR RM Series is significantly more affordable than the CORSAIR SF850. The RM Series is priced at C$179.00, while the SF850 comes in at C$279.99. This represents a difference of C$100.99, making the RM Series a more budget-friendly option for those looking to save money on their power supply. This disparity in pricing can be a crucial factor for consumers who are looking for good value without compromising on performance.

Power Efficiency

In terms of power efficiency, the CORSAIR SF850 stands out with its 80 PLUS Platinum rating. This indicates that it operates with a higher efficiency level compared to standard power supplies, which can lead to lower energy costs over time. On the other hand, while the RM Series is highly efficient, it does not specify an 80 PLUS rating in the provided data. The Platinum rating of the SF850 suggests that it is designed for users who prioritize energy efficiency and long-term savings on their electricity bills.

Form Factor

The CORSAIR SF850 is designed in a compact SFX form-factor, making it an ideal choice for small-form-factor PCs or for users who want to save space in larger cases. The RM Series does not specify a form factor, but it is generally larger and designed for more traditional tower cases. For users with limited space or those building compact systems, the SFX design of the SF850 provides a significant advantage in terms of installation flexibility and space management.

Modular Design

Both the CORSAIR SF850 and the CORSAIR RM Series feature fully modular designs, allowing users to connect only the cables they need for their specific system configurations. This modularity is essential for maintaining a clean and organized build, particularly in cases with limited airflow or space. However, the SF850 includes Type-5 Micro-Fit PSU connectors, which may offer a more compact cabling solution compared to the Type 4 cables used in the RM Series. This detail could be a deciding factor for users focused on minimizing cable clutter.

Cooling Solutions

The cooling systems of both power supplies are well-engineered, but they differ in fan design and operation. The SF850 is equipped with a 92mm PWM cooling fan that promises powerful cooling while maintaining low noise levels through its fluid dynamic bearing. In contrast, the RM Series features a larger 140mm rifle bearing fan, designed to keep noise to a minimum even under full load, thanks to a specially calculated fan curve. Users who prioritize quieter performance might prefer the RM Series, while those needing robust cooling in compact builds may lean towards the SF850.

Component Quality

Component quality is another area where the CORSAIR SF850 excels, utilizing 105°C rated Japanese capacitors for enhanced reliability and power stability. While the RM Series also boasts industrial-grade, 105°C-rated capacitors, the SF850's emphasis on these high-quality components can provide an edge in terms of long-term performance and durability. For users who expect their power supply to deliver unwavering power over extended periods, the SF850 may be the more reassuring choice.

Compatibility Features

The CORSAIR SF850 is notable for its ATX 3.0 compliance and PCIe 5.0 readiness, which means it can support the latest graphics cards and motherboards while effectively managing transient power spikes. In contrast, the RM Series offers triple EPS12V connectors for broad compatibility with modern hardware. While both units are designed to work with current technologies, the SF850's advanced compliance with newer standards makes it a more future-proof option for those planning to upgrade their systems in the near future.

Which should you buy?

Ultimately, the decision between the CORSAIR SF850 and the CORSAIR RM Series hinges on specific user needs and budget. The SF850 is a premium choice with its higher efficiency, compact design, and advanced compatibility features, making it ideal for high-performance, space-constrained builds. However, if budget is a primary concern, the RM Series offers solid performance at a significantly lower price point of C$179.00, making it a great option for general use. If you require a high-quality power supply with the latest features and are willing to invest more, the SF850 is the way to go. If you are looking for a reliable and cost-effective solution, the RM Series is likely to meet your needs.