SeaSonic X-850 850W Power Supply

Power Supply

SeaSonic X-850 850W Power Supply Main Picture

SeaSonic X-850 850W Power Supply Picture 20451SeaSonic X-850 850W Power Supply Picture 20450

Model: SeaSonic SS-850KM


Maximum Power 850 W
Standard Compliance CB, cTUVus, CCC, TUV, GOST-R, BSMI, CE, UKR, FCC, C-tick
Peak Efficiency 90 %
Efficiency Certification 80 PLUS Gold
Cooling System Quiet 120mm Fan
Noise Level 0-16 dB
Safety Compliance OPP, OVP, UVP, SCP, OCP, OTP
Materials Compliance WEEE, RoHS
Power Distribution
+3.3V rail 25 amps
+5V rail 25 amps
+12V1 rail 70 amps
Combined +12V Maximum 70 amps
Molex 8
Floppy 2
PCI Express 8-pin 4
CPU Power 8 pin 1
CPU Power 8/4 pin 1
Height 86 mm (3.4 in)
Width 150 mm (5.9 in)
Depth 160 mm (6.3 in)
Voltage 100-240 Vac
Frequency 50/60 Hz


  • The X Series adopts a clever "Hybrid Silent Fan Control" design, which offers three distinct operation modes, fanless mode, silent mode, and cooling mode. The X automatically adjusts fan mode and speed according to the ambient temperature level. This brand new design not only optimizes heat dissipation, but also prolongs lifespan of the system by reducing unnecessary fan rotation. To make the X Series even more robust and exciting, Seasonic offers Sanyo Denki San Ace Silent Fan on X, the best fan there is in the industry.
  • The world-renowned Sanyo Denki Ball bearing fans are made of the highest quality components to ensure maximum quality and performance. The use of spoon shaped high-density plastic fan blades with smoothed leading edges, strict tolerance ball bearings and precision copper axel are just some features to ensure ultra low noise performance and quality. In addition, the fan uses 3 balancing points, instead of the industry standard of 2 points, to ensure perfect balance and rotation. The Sanyo Denki fan is a perfect match to the class leading Sea Sonic Hybrid Silent Fan control for the absolute top performance of the industry.
  • Featuring a patent pending 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.