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Seasonic FOCUS PLUS Gold (FX) 850W PSU Review

The Seasonic FOCUS PLUS Gold 850W is yet another power supply in the company line up to deliver, quality, high grade power to a demanding enthusiast system.

The build quality is fantastic, and there are no indications that Seasonic have cut any manufacturing corners to hit a more competitive price point in the mid range market. The external paint work is stellar, and the overall look will fit in many builds without ruining the overall appearance. It is without question a very well built power supply to solidify the companies standing in the enthusiast sector.

The FOCUS PLUS Gold is a new design from Seasonic and it has been admirably executed. These power supplies are set to replace the S12G and G units which have been around now for a long time. The FOCUS PLUS gets a high recommendation from us, and with the 10 year Seasonic warranty – there is plenty of peace of mind for now and far into the future.

Technically, the FOCUS PLUS Gold is rock solid. Noise suppression is worthy of another mention, and the efficiency levels are high, easily achieving 80 Plus Gold certification. Voltage regulation is another plus point – without any hitches in the delivery we can mention.

As always. the Seasonic modular cabling is top drawer although we would imagine a specific audience would prefer Seasonic to ditch the fatter sleeved cables on the PCIe and CPU cables to universally focus on flat ribbon style cables.

The power supply in operation is very quiet. Seasonic have improved their fan selection in recent years, and the latest Hong Hua Fluid Dynamic bearing fan adopted in this 850W unit is very quiet unless you are constantly demanding in excess of 750 watts. If so, you would be better investing a little more cash on a 1000 watt unit as it would put less stress on the capacitors and reduce overall noise levels. The Seasonic PRIME 1000W Platinum unit (or Titanium if you can afford it) would be one of my first choices for this kind of load situation.

Buy the Seasonic FOCUS PLUS Gold (FX) 850W power supply from Overclockers UK for £124.99 inc Vat HERE.

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  • Typical Seasonic build quality.
  • High grade Nippon Chemi Con capacitors used throughout.
  • Load regulation.
  • Ripple suppression.
  • achieved 80 Plus Gold in our tests.
  • new design is solid.
  • Pure modular.
  • quiet.


  • none.

KItGuru says: The Seasonic FOCUS PLUS Gold 850W supply is technically robust and its built to the very highest standards. We rate it very highly indeed.


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Rating: 9.0.

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