There's no shortage of choice today when it comes to ATX power supplies, but the same can't be said for the diminutive SFX form factor. Fans of smaller rigs should be pleased to hear that Corsair has released two new itty-bitty SFX PSUs for consideration: the 450-watt SF450 and the 600-watt SF600. Both units are fully modular and 80 Plus Gold certified. Most importantly, they each use relatively large 92mm fans that can stop spinning at low loads.
Both units are conservatively styled. They feature a black exterior with white accents, flat cables, and a gray 92mm fan. The fan's speed is tied to the power output of the PSU. On the SF450, the fan stops spinning at 90 watts of power ouptut, while the SF600 fan stops at 120 watts. While one shouldn't count on running Crysis 3 in silence, the fan should prove to be quiet or silent at idle. Below is Corsair's fan noise curve for the SF600.
Each unit includes one 20+4 pin ATX connector, one 4+4 pin EPS connector, four SATA connectors on one cable, and a single molex connector for good measure. For the more ambitious, Corsair includes not one but two PCIe 6+2 connectors. Corsair also points out that the units feature 100% Japanese capacitors.
The SF450 carries a suggested price of $89.99 and is available now. Corsair says the SF600 will be available soon at a suggested price of $119.99. Both units come with seven-year warranties.