CORSAIR RM Series , RM650, Fully Modular Power Supply vs CORSAIR SF1000 Fully Modular Low Noise 80 Plus

Price Comparison

The CORSAIR RM Series is priced at $138.31, while the CORSAIR SF1000 comes in at $189.99. This makes the RM Series approximately 27% cheaper than the SF1000. If budget is a significant factor in your decision-making, the RM Series offers a more economical choice without sacrificing quality or performance. The difference in price can be attributed to the SF1000's advanced features and higher efficiency ratings, which may justify the expenditure for users seeking top-tier performance in compact builds.

Efficiency Ratings

In terms of efficiency, the CORSAIR SF1000 boasts an 80 PLUS Platinum certification, while the RM Series is rated at 80 PLUS Gold. The Platinum rating indicates that the SF1000 is more efficient, meaning it converts more of its input power into usable output power, resulting in lower energy waste. Specifically, Platinum-rated power supplies are known to achieve efficiencies above 90%, compared to Gold-rated supplies, which typically range from 87% to 90%. For users focused on energy savings and reduced electricity bills, the SF1000 is the superior option.

Form Factor

The CORSAIR SF1000 is an SFX power supply, which is designed for compact builds and small form-factor PCs. It includes an SFX-to-ATX bracket, allowing it to fit into larger cases if necessary. In contrast, the RM Series is an ATX power supply, making it more suited for standard-sized cases. The choice between these form factors largely depends on your PC case and build style. If space is at a premium, the SF1000's compact design provides a significant advantage.

Cooling Solutions

Cooling is another area where the two power supplies differ. The RM Series features a 140mm rifle bearing fan that emphasizes low noise during operation, especially with its Zero RPM fan mode, which allows for silent performance at low to medium loads. On the other hand, the SF1000 utilizes a 92mm PWM cooling fan, which also promotes low-noise operation thanks to its fluid dynamic bearing. While both units are designed to minimize noise, the RM Series may have a slight edge in larger builds due to its larger fan size, which can move more air at lower RPMs.

Cable Management

Both the RM Series and the SF1000 are fully modular power supplies, allowing users to connect only the cables needed for their system, which helps in managing cable clutter. The RM Series comes with triple EPS12V connectors, ensuring compatibility with modern graphics cards and motherboards. The SF1000, however, features Type-5 Micro-Fit PSU connectors, designed to take up less space and enhance cable management in tight quarters. For users prioritizing a clean and organized build, both options provide excellent solutions, though the SF1000 may be better suited for smaller cases.

Reliability and Warranty

When it comes to reliability, both power supplies are built with high-quality components. The RM Series includes industrial-grade, 105°C-rated capacitors, which ensure solid electrical performance and reliability. It is backed by a ten-year warranty, providing peace of mind for long-term use. Similarly, the SF1000 also features 105°C rated Japanese capacitors and offers a seven-year warranty, which is slightly less than the RM Series. For users prioritizing longevity and manufacturer assurance, the RM Series has a slight edge with its longer warranty period.

Target Audience

The target audience for the CORSAIR RM Series is likely gamers and PC builders who need reliable power without breaking the bank. Its solid performance, efficiency, and affordability make it an excellent choice for mid-range to high-end builds. In contrast, the CORSAIR SF1000 is aimed at enthusiasts who prioritize compact builds and cutting-edge technology. Its higher efficiency, smaller form factor, and advanced features cater specifically to those who require the best performance in constrained spaces.

Which should you buy?

Choosing between the CORSAIR RM Series and the CORSAIR SF1000 largely depends on your specific needs and budget. If you are looking for a cost-effective and reliable power supply that offers solid performance for a standard build, the RM Series at $138.31 is a great choice. However, if you're building a high-performance, compact PC and are willing to invest more for efficiency and advanced features, the SF1000 at $189.99 is worth considering. Each power supply excels in different areas, so your final decision should align with your individual requirements and preferences.