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SeaSonic M12D SS-850 850W ATX12V V2.3/EPS12V V2.92 SLI Ready CrossFire Ready 80 PLUS SILVER Certified Modular Active PFC Power Supply

  • ATX12V V2.3/EPS12V V2.92
  • Modular
  • 80 PLUS SILVER Certified
  • 100 - 240 V 50/60 Hz
  • +3.3V@24A,+5V@30A,+12V1@40A,+12V2@40A,-12V@0.8A,+5VSB@3.0A
Any PC enthusiast and gamer knows that having the right amount of power for their rig is one of the most important aspects of a stable system. SeaSonic presents the M12D SS-850 power supply that pumps 850W to vital peripherals, like advanced video cards. Not only does it perform well, but it looks great too with its durable black satin finish. The M12D SS-850 is also 80PLUS Silver Certified for high efficiency.
Multi video card setups are easily accommodated by four 6pin PCI-E connectors, two of which can be modulated up to 8pins. You’ll also enjoy having eleven SATA and eight 4pin molex power connectors for all of your storage devices and optical drives. The power supply features solid caps on its +12V rails and an active PFC so your system only gets pure power at proper voltage.
The M12D SS-850 also features a silent fan with built-in smart control to keep your system cool. You’ll also appreciate the high grade black mesh that wraps the cabling to help protect your power supply and components. Best of all, the PSU is modular, so you only have to use the cables you need, increasing air flow in your case. Make the SeaSonic M12D SS-850 the power supply for all of your PC needs today!
  • neweggATX12V and EPS12V CompatibleCompatible with the ATX12V v2.3 and EPS12V v2.92 standards, the SeaSonic M12D SS-850 provides maximum power stability to drive the processors as well as other components for desktop and server computer systems.
  • newegg850W Maximum PowerThe SeaSonic M12D SS-850 power supply provides a maximum power of 850W to deliver safe, reliable output for high-end computer systems. Two industry-leading independent +12v rails are provided for more stable and safer power output.
  • newegg80 PLUS SILVER CertifiedThe 80 PLUS SILVER certified power supply provides high power efficiency of at least 85% at any load between 20% and 100%, saving your money on your electrical bill, reducing heat in your computer's system and prolonging its life.
  • neweggQuad PCI-E ConnectorsWith four 6+2-pin PCI-E connectors, the SeaSonic M12D SS-850 is ideal for building up a SLI or CrossFire gaming system.
  • neweggModular Cable DesignThe modular cable design allows use of only the cables you need resulting in improved internal airflow and reduced system clutter.

Warranty & Returns

Warranty, Returns, And Additional Information


  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years
  • Read full details

Return Policies

  • Return for refund within: 30 days
  • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy