G Series

With the debut of its G-series product line Sea Sonic is targeting right at the heart of the most popular computer power requirements. The G-Series combines the performance of 80 PLUS Gold efficiency with top quality, high electrical performance, advanced fan control and energy savings. The 360 W model features standard cabling design, whereas the 450 W, 550W, and 650 W units include semi-modular DC cables. The Seasonic G-series product range contains many of the essential functions that high-end consumers require, such as 80 PLUS® Gold certification, Energy Star qualification, superior output voltage variation rate (less than 3 %), Sea Sonic’s S2FC fan control and a 120 mm fluid dynamic bearing fan to ensure optimal cooling and super low noise.

  • ATX 12 V
  • Semi-modular
  • 80 PLUS Gold Certified
  • 5 Years Warranty
  • Dimensions: 150 mm (W) x 160 mm (L) x 86 mm (H)


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80 PLUS®Gold

Seasonic was the forerunner of creating the very first 80 PLUS® Gold certified power supply on the market and since that time it has built a very popular Gold series lineup that covers a full power range of power supplies with impeccable performance and efficiency.

The highly efficient 80 PLUS® Gold certification guarantees greater than 87 %, 90 % and 87 % efficiency at 20 %, 50 % and 100 % operating loads, respectively. The clear advantage of buying a power supply with 80 PLUS® Gold rating is the fact that the less energy gets wasted during power conversion, the lower the operating costs will be for the user.

Semi-Modular Cables

Some cables are permanently attached to the power supply (most of the time the 24-pin and the 8-pin ATX power cables) and the rest of the cables can be used to connect the rest of the available components. G-360 comes with fixed cables.

S2FC - Smart and Silent Fan Control

The intelligent thermal circuit feature is designed to find the optimal balance between the necessity to cool the components and the need to run the power supply in the most silent manner possible.

Fluid Dynamic Fan Bearing

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.

How it works

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.

feature summary

  • 80 PLUS® Gold certified
  • Semi-Modular Cables
  • Tight Voltage Regulation
  • Cable-free Connection Design
  • S2FC - Smart and Silent Fan Control
  • DC to DC Converter Design
  • Multi-GPU setup
  • Gold plated connectors
  • 5 years warranty



Technical Specifications
80PLUS® Gold
Form Factor Intel ATX 12 V
Dimensions 150 mm (W) x 160 mm (L) x 86 mm (H)
Fan Information Fan Size 120 mm
Fan Control Seasonic S2FC
Fan Bearing Fluid Dynamic Bearing
Life Expectancy 50,000 hours at 40 °C, 15 % - 65 % RH
Cable Information Modularity Semi-modular
Cable type Flat black cables
Electrical Features Operating Temperature 0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C)
MTBF @ 25 °C, excl. fan 150,000 hours
AC Input Full Range
Protection OPP, OVP, UVP, OCP, OTP, SCP
Safety and Environmental Safety and EMC cTUVus, TUV, CB, EAC, C-tick, BSMI, CE, FCC, CCC
Environmental Compliance Energy Star, RoHS, WEEE, ErP Lot 6, REACH
Warranty 5 Years
Power Output
AC Input Voltage: 100 V - 240 V
Current: 10 A max.
Frequency: 50 Hz - 60 Hz
DC Output Rail +3.3 V +5 V +12 V -12 V +5 VSB
Maximum Power 20 A 20 A 62 A 0.3 A 2.5 A
100 W 744 W 3.6 W 12.5 W
Total continuous power 750 W



ConnectorConnector CountCable Length
Main Power (24/20 pins) 1 1 x 610 mm - fixed
CPU (8/4 pins) 2 1 x 610 mm - 8/4pins - fixed
1 x 650 mm - 8 pins modular
PCIe (8/6 pins) 6

1 x 640 + 100 mm - fixed

2 x 550 + 100 mm - modular

SATA 10 2 x 400 + 120 + 120 + 120 mm - modular
1 x 300 + 120 mm - modular
Peripheral 5 1 x 400 + 120 + 120 mm - modular
1 x 300 + 120 mm - modular
Floppy 1 1 x 101 mm - modular

Specifications are subject to change without prior notice.