SEASONIC  

VERTEX GX-1200 Seasonic VERTEX GX 1200 - power supply - 1200 Watt

Mfg Part Number:  VERTEX GX-1200  
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Price: $411.16 + Free Shipping
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In Stock: 87
Last Updated: Oct 16, 2026
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ATX 3.1 and 16-Pin PCIe Gen 5.1 Cable (12V-2x6)

Seasonic's latest VERTEX ATX 3 Series is designed and built to power new PC components requiring the new ATX 3.1 and PCIe 5.1 standards.

Digital Hybrid Fan Control

Seasonic's vast experience in designing the most silent and efficient power supplies on the market was translated into the development of Hybrid Mode; a state-of-the-art digital fan control that enables users to keep the overall fan noise at the lowest possible level.

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.

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.

More from the Manufacturer

Main Specification
General Information
Manufacturer Sea Sonic Electronics Co., Ltd
Manufacturer Part Number VERTEX GX-1200
Manufacturer Website Address http://www.seasonicusa.com
Brand Name Seasonic
Product Line Vertex
Product Series GX
Product Model VERTEX GX-1200
Product Name Vertex GX 1200W Power Supply
Product Type Power Supply
Technical Information
Specification Compliance ATX 3.1
Efficiency 90%
Power Factor Correction (PFC) Active
Number of Fans 1
Fan Bearing Type Fluid Dynamic Bearing
Fan Diameter 135 mm
Protection Type Over Current
Protection Type Under Voltage
Protection Type Short Circuit
Protection Type Over Voltage
Protection Type Over Temperature
Protection Type Over Power
Modular Yes
Modular Type Fully Modular
ATI CrossFire Supported Yes
NVIDIA SLI Supported Yes
Features Low Noise
Reliability
MTBF 100000 Hour
Power Description
Number of +12V Rails 1
Input Voltage 230 V AC
Input Voltage 120 V AC
Input Voltage Range 100 V AC - 240 V AC
Output Voltage 12 V DC
Output Voltage -12 V DC
Output Voltage 5 V SB
Output Voltage 3.3 V DC
Output Voltage 5 V DC
Output Voltage Detail 3.3 V DC @ 25 A
Output Voltage Detail 12 V DC @ 100 A
Output Voltage Detail 5 V DC @ 25 A
Output Voltage Detail -12 V DC @ 0.3 A
Output Voltage Detail 5 V SB @ 3 A
Output Current 300 mA
Output Current 25 A
Output Current 3 A
Output Current 100 A
Output Power 1200 W
Input Frequency 50 Hz - 60 Hz
Interfaces/Ports
Number of SATA Power Connectors 18
PCI Express Connector Yes
PCI Express Version 5.1
Number of (6+2 pin) PCI Express Power Connectors 3
Number of (4+4 pin) CPU Power Connectors 2
Number of 4-pin Molex Power Connectors 3
Environmental Conditions
Minimum Operating Temperature 32°F (0°C)
Maximum Operating Temperature 122°F (50°C)
Physical Characteristics
Color Family Black
Product Color Black
Form Factor ATX/EPS
Height 3.4"
Width 5.9"
Depth 6.3"
Miscellaneous
Certifications & Standards
  • cTUVus
  • TUV
  • CB
  • CCC
  • BSMI
  • EAC
  • CE
Energy Star Yes
Energy Efficiency Certification 80 Plus Gold
Energy Efficiency Compliance Energy-related Products Directive Lot 6 (ErP Lot 6)
Environmental Compliance Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Environmental Compliance Taiwan Restriction of Hazardous Substances (Taiwan RoHS)
Environmental Compliance Restriction of Hazardous Substances (RoHS)
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)
Warranty
Limited Warranty 12 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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