Seasonic FOCUS GX 650 – 650W 80 PLUS Gold Fully Modular PSU

  • Wattage: 650W
  • 80 PLUS Efficiency: Gold
  • PSU Form Factor: ATX
  • Zero RPM Mode: Yes
  • Modular: Fully


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GTIN: 04711173874706

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Product Description

The newly upgraded Seasonic FOCUS GX 650 is the successor to the FOCUS PLUS 650, which became an instant top seller in the power supply market after its launch in 2017. In 2019, Seasonic engineers made improvements to the popular FOCUS GX 650 by removing the inline capacitors on the supplied cables. Besides the small change in the series naming, the PSU housing and its packaging are also updated to align with the concept of the OneSeasonic Initiative.


  • Wattage: 650W
  • 80 PLUS Efficiency: Gold
  • PSU Form Factor: ATX
  • Zero RPM Mode: Yes
  • Modular: Fully
  • PCIe Connectors: 6
  • SATA Connectors: 8
  • Compact Size – 140 mm deep
  • Tight Voltage Regulation
  • Cable-free Connection Design
  • S3FC – Fanless until 30 % load
  • Multi-GPU setup
  • Gold plated connectors
  • 10 years warranty

About the Seasonic FOCUS GX 650 Power Supply Unit

Seasonic FOCUS GX 650 Promo View
Seasonic FOCUS PX GX PSU Internal


Seasonic’s engineers have implemented a new design feature, where instead of cables; the back panel and the PCB (Printed Circuit Board) are connected by a copper plate. This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality.


The industry’s first, Seasonic patented, advanced three-phased thermal control achieves optimal between silence and cooling. This Hybrid Silent Fan Control functions in three operational stages: Fanless Mode, Silent Mode, and Cooling Mode.


  • Reduced noise without increase in temperature;
  • Extended fan life due to the reduced number of fan rotations;
  • Optimized heat dissipation at all times;
  • Unsurpassed silent performance in Fanless Mode.

Additionally, there is a switch at the back of the power supply which allows users to customize their cooling needs by selecting between the Seasonic S2FC (fan control without Fanless Mode) and the S3FC (fan control including Fanless Mode).

Seasonic FOCUS PX GX PSU Hybrid Button


The fan control button can be found on the back of the FOCUS PLUS power supply, next to the power switch. The image here illustrates how to select different fan control modes to suit your need.

DO NOT press the button if you wish to include the Fanless Mode, which means the fan in the power supply will not spin when the power supply is under light loads. Press the button if you wish to have the fan spin at all times, even at lower loads.


High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.


When the fan shaft rotates, high-pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces. As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.

Product Specifications

General Information







3 kg


32 × 20 × 12 cm