Main Features
Patented DC Connector Module with Integrated VRM (Voltage Regulator Module)
This patented full modular design minimizes voltage drop and impedance, maximizes efficiency and enhances the overall performance for cooling and reliability. *Patent Pending: US, CN, JP, TW & DE
80 PLUS® Gold Certified Super High Efficiency
The 80 PLUS Gold certified power supply provides high power efficiency of at least 87% at any load between 20% and 100%, saving you money on your electrical bill, reducing heat in your computer's system, and prolonging its life.
Sanyo Denki San Ace Silent Fan
The Sanyo Denki San Ace PWM Silent Fan plus Hexflo honey comb cutouts increase overall airflow in the power supply enclosure and help remove heat from the chassis simultaneously.
Universal AC Input (Full Range)
The Sea Sonic X850 power supply provides a maximum power of 850W to deliver safe, reliable output for high-end computer systems. A strong +12V single rail ensures the maximum provision of 12V power to energy-hungry components such as CPU and VGA card, minimizing the likelihood of overload shut down.
![Universal AC Input [Full Range]](//c1.neweggimages.com/BizIntell/item/17/151/17-151-102/X_650-750-850_03-850_2.jpg)
Seasonic Hybrid Silent Fan Control

Other Features
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DC to DC Converter Design
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Conductive Polymer Aluminum Solid Capacitors - Enhanced stability at severe operating conditions.
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Highly Reliable 221°F (105°C) Japanese Brand Capacitors - Exceptionally reliable components extend product life.
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Tight Voltage Regulation (±1%)
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Active Power Factor Correction (99% PF Typical) - Reduces line loss and power distortion.
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High +12V Output
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High Current Gold Plated Terminals
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Dual Sided PCB Layout
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Ultra Ventilation (Honeycomb Structure)
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Multi-GPU Technologies Supported
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All-in-One DC Cabling Design
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Easy-Swap Connector
Product Information - X-850 (SS-850KM3 Active PFC F3)
What's in the Box

The very first full modular multi-output ATX, high-wattage power supply that has ever obtained the 80PLUS Gold certification is introduced by Seasonic. This coveted power supply is named “X” and is offered in 4 versions: 560W, 660W, 760W and 850W.
Featuring an exclusive design of “DC Connector Module with Integrated VRM”, the X Series is set to achieve both near-perfect DC to DC conversion and fully modularized design without compromising efficiency. After a long wait, finally there is a product that delivers the complete package, ultra-high efficiency, greatly improved dynamic response, and customizable cable arrangement that is tailored to meet any individual’s needs.