Seasonic Core GX-850 ATX 3.1 White
Seasonic Core GX-850 ATX 3.1 White
The Seasonic Core GX-850 power supply, in a white finish, provides modern gaming rigs with a stable 850W output. It fully complies with ATX 3.1 and PCIe 5.1 specifications, and its 80 PLUS Gold certification means it achieves 90% efficiency at half load. For easy organisation inside your case, it features a fully modular design with detachable white braided cables, so you only connect what you need. The PSU is ready for future generations of components thanks to its native 12V-2x6 connector.
850W
Power
ATX
Form factor
80 PLUS Gold
Certification
Fully
Modularity
Key technologies of the Seasonic Core GX-850 with ATX 3.1, white
- Total power output of 850W with 90% efficiency
- Fully modular system with white braided cables simplifies internal cable management
- Native 16-pin 12V-2x6 connector powers PCIe 5.1 graphics cards with up to 600W
- S2FC technology controls the fan for minimal noise cooling
- Innovative OptiSink PCB layout improves heat dissipation
- The package includes an adapter for connecting older graphics cards with two 8-pin connectors
- A set of six protections safeguards connected components from damage
Choosing a power supply
When choosing a suitable PC power supply, the key parameter, besides the form factor, is its power output. This indicates the maximum wattage the power supply can continuously deliver to the computer's components. It's a good idea to use an online calculator to work out the optimal power output based on your chosen components.
850W power and Gold certification
The power supply delivers a total output of 850W, which reliably covers the energy demands of high-performance gaming computers. The 80 PLUS Gold certification confirms its high efficiency in converting electrical energy into direct current. At 50% load, the PSU operates at 90% efficiency, reducing waste heat production and electricity consumption, which contributes to lower operating temperatures for the entire build.
Seasonic Core GX-850 power supply and the ATX 3.1 standard
Full compliance with the ATX 3.1 standard brings greater reliability and the ability to handle the sudden power spikes of modern graphics cards. This means the PSU supplies a stable voltage to components even during sudden increases in power draw. The ATX 3.1 specification defines stricter tolerances for voltage deviation and response time, contributing to overall system stability.
Native PCIe 5.1 support
The power supply is equipped with a native 16-pin 12V-2x6 connector to power the latest graphics cards. This connector complies with the PCIe 5.1 standard and can deliver up to 600W to a single graphics card. Using a single cable simplifies installation and improves airflow in the case compared to solutions with multiple cables and adapters.
Universal graphics card connection for the Seasonic Core GX-850
In addition to the connector for the latest graphics cards, the power supply also ensures compatibility with older components. An adapter converts the 12V-2x6 connector to two 8-pin PCIe connectors. This lets you connect previous-generation graphics cards that require traditional power connectors.
Tidy cable installation
The fully modular design gives you control over which cables are used inside your build. You only connect the ones necessary for your components and leave the rest aside. The included white braided cables not only match the power supply's design but also make routing and organisation easier for a clean look and efficient airflow.
Intelligent fan control on the Seasonic Core GX-850
The Smart and Silent Fan Control (S2FC) technology actively manages the speed of the fluid dynamic bearing fan. At low loads, the fan maintains minimal RPMs for almost silent operation. As the load and temperature increase, the speed smoothly rises to ensure sufficient heat dissipation while maintaining a low noise level.
Optimised heat dissipation
An innovative printed circuit board layout, known as OptiSink Design, improves the power supply's cooling properties. The new component layout increases internal space and allows for the use of smaller heatsinks. This arrangement promotes more efficient airflow and faster heat dissipation from key components, which directly enhances the PSU's reliability.
Protection suite for the Seasonic Core GX-850 power supply
The power supply integrates a comprehensive suite of electrical protections to safeguard all connected components from damage. The protection set includes over-voltage, under-voltage, and over-current protection. Other features include overload, short-circuit, and over-temperature protection for safe and stable operation of the entire system.
Compact ATX form factor
With a depth of 140mm, the power supply fits into most standard ATX computer cases without any issues. The smaller dimensions leave more room for cable management and for installing other components, such as large coolers. The compact design therefore doesn't place high demands on the internal layout of the case and simplifies the overall assembly.
Connectors
- 1× ATX 24-pin
- 2× CPU 8-pin / 4+4-pin
- 1× 12V-2x6 16-pin
- 3× PCI-E 8-pin / 6+2-pin
- 6× SATA 15-pin
- 3× Molex 4-pin
Package contents
- PC power supply
- Mounting screws
- 1× Power cable
- 1× ATX 24-pin (20+4)
- 2× CPU 8-pin (4+4)
- 2× PCI-E 8-pin (6+2)
- 2× SATA 15-pin
- 1× Molex 4-pin
- 1× 12V-2x6 16-pin (12+4)
80 Plus certification on the European market
The 80 Plus certification was created to objectively evaluate the efficiency of computer power supplies. This gives users a simple and easy-to-read comparison of individual models. On the European market (where 230V is used), there are six levels of 80 Plus certification with set requirements for computer power supplies. Higher energy efficiency primarily means lower energy consumption.
| PC PSU load | Efficiency at 20% load | Efficiency at 50% load | Efficiency at 100% load |
|---|---|---|---|
| 80 PLUS | 82% | 85% | 82% |
| 80 PLUS Bronze | 85% | 88% | 85% |
| 80 PLUS Silver | 87% | 90% | 87% |
| 80 PLUS Gold | 90% | 92% | 89% |
| 80 PLUS Platinum | 92% | 94% | 90% |
| 80 PLUS Titanium | 94% | 96% | 94% |
Specifications
Performance and format
Equipment
Efficiency
Connectors
Cooling system
Dimensions
| Code: | UEcgx5w |
| Warranty: | 84 months |
| Links: | Producer's Website: |
| Manufacturer information |
Sea Sonic Europe BV, Rietveld 7, 5258 ED Berlicum, Netherlands [email protected] 
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