SF Series power supplies bring legendary Corsair performance and reliability to the SFX small form factor standard. They have the features you've come to expect from Corsair, with super-efficient 80 PLUS Gold certification, superior voltage regulation, Zero RPM mode for virtually silent operation, and 100% 105 Japanese electrolytic capacitors for better reliability. If you’re building a small system that’s going to see a lot of use, low heat generation and high efficiency are essential. SF Series power supplies operate at greater than 90% efficiency at 50% load on 115V circuits. Designed to the SFX power supply specification for high performance small form factor systems. Detachable DC cables make builds and upgrades easy, with clean, great-looking results. Premium internal components ensure solid power delivery and long term reliability. SF Series power supplies are so efficient that the fan doesn’t need to spin at low to medium loads.