The all NEW Seasonic S12II
-- The Industry Standard for Silence, Power & Efficiency --


Today, Sea Sonic Electronics introduces a new range to our product lineup, the S12II series, designed for Energy Savings to meet the 80 PLUS® specifications.

The S12II series is made up of 330, 380, 430 & 500 watts units.  Each of the Windows Vista™ ready power supply not only meets but also surpasses the stringent 80 PLUS® requirements.  This feature combined with a power factor correction factor of 0.99, total computer system energy usage can be reduced by up to 20%, surpassing even the original S12’s performance levels.

Technically, the S12II is a dual 12V rails Double Forward Converter circuit design.  High grade Conductive Solid Polymer Aluminum Capacitors are used to further enhance performance and reliability.  These capacitors offer improved heat resistance and conductivity over the market standard electrolytic capacitors.


Additionally, this high efficiency power supply uses black aluminum heat sinks to better dissipate the heat and at the same time, cooled by a large 12cm ball bearing fan connected to our Super Low Noise Fan control for near silent operations at most load conditions.

The new S12II series comes with all the necessary cabling to meet current peripherals’ requirements.  Depending on model, the new 6+2Pin PCI-E connector is also available for next generation graphics cards.

The S12II meets all EU regulations for RoHS, WEEE and major safety requirements.  The new design, the use of high end components coupled with superior efficiency and silence performance, all make the S12II the new bench mark for PC power supplies.

About Sea Sonic Electronics:
Sea Sonic Electronics Co., Ltd. has maintained a continuous focus on R&D and the production of quality power conversion products since 1975. The company is headquartered in Taipei, with a production facility in Guangdong, China, and a U.S. branch in California. Over the past decades, Sea Sonic Electronics has provided timely and professional solutions to meet IT industry requirements. Sea Sonic Electronics successfully entered the telecommunication and networking power conversion market in the year 2000. At the same time, manufacturing facilities were expanded to provide JIT global logistics service to meet increased business demand. Sea Sonic has taken a leadership role to develop green & silent power supplies with higher efficiency and higher power output. For more information on the company, visit or