Seasonic Core GX-650 ATX 3.1
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Seasonic Core GX-650 ATX 3.1
The Seasonic Core GX-650 power supply unit provides a stable 650W of power for components in both gaming and workstation builds. Thanks to its 80 PLUS Gold certification, it achieves high energy efficiency, which means less wasted energy and lower waste heat production. Full compatibility with the ATX 3.1 standard prepares it for future hardware generations and reliably handles high power spikes. S2FC technology controls the speed of the quiet fan, which features a fluid dynamic bearing. A fully modular cabling system simplifies cable management inside the computer case and improves airflow.
650W
Power
ATX
Format
80 PLUS Gold
Certification
Fully
Modularity
Key technologies of the Seasonic Core GX-650 ATX 3.1 power supply unit
- Native 12V-2x6 connector powers PCIe 5.1 standard graphics cards
- Fully modular cable system for a clean installation and better airflow
- S2FC technology actively regulates fan speed for quiet operation
- Fluid dynamic bearing fan runs quietly and has a long lifespan
- OptiSink design efficiently dissipates heat from key components
- Included adapter expands compatibility with older graphics cards with 8-pin connectors
- A comprehensive suite of protections (OVP, UVP, OCP, OPP, SCP, OTP) safeguards connected components
Choosing a power supply
When choosing a suitable PC power supply, the key parameter, besides the format, is its power output. This indicates the maximum number of watts the PSU can continuously supply to the computer's components. It's a good idea to use a web-based calculator to work out the optimal power output based on your chosen components.
ATX 3.1 and PCIe 5.1 standard
Support for the ATX 3.1 standard means the power supply better handles the high and sudden power spikes demanded by powerful graphics cards and processors. This gives the system a stable and reliable power supply even under heavy load. Compliance with the PCIe 5.1 specification is related to direct support for the powerful graphics accelerators on the market.
Native 12V-2x6 connector on the Seasonic Core GX-650
The power supply includes a native 12V-2x6 connector, which is used for the direct connection of PCIe 5.1 standard graphics cards, such as NVIDIA GeForce RTX 40 series cards. This solution eliminates the need for adapters and reducers when building your system. A direct connection reduces the risk of incorrect wiring and contributes to a cleaner look inside the case.
Fully modular cabling of the Seasonic Core GX-650
To maintain wide compatibility, the package also includes an adapter from the 12V-2x6 connector to two standard 8-pin PCIe connectors. This element is for the seamless connection of older graphics cards that do not use 16-pin power. The fully modular cabling system gives the user control over which cables are used in the build. You only connect those necessary to power specific components, and the rest remain safely stored away. The result is significantly easier cable management and fewer obstructions to airflow. Better airflow then improves the overall cooling of the case and makes future maintenance easier.
Fluid dynamic fan bearing
Cooling is provided by a fan with a fluid dynamic bearing (FDB). This type of bearing uses a film of oil to reduce friction and vibration. The fan therefore operates at a low noise level and has a longer lifespan compared to standard sleeve or ball bearings. The system's operation is quieter, even under higher loads.
S2FC technology of the Seasonic Core GX-650 power supply unit
The intelligent S2FC fan control maintains a balance between effective cooling and quiet operation. The system actively adjusts the fan speed according to the current load and the temperature of the power supply. At low loads, such as when working with documents, the fan rotates at a minimal speed, reducing noise to an almost inaudible level.
Heat dissipation with OptiSink technology
The internal design uses a redesigned PCB layout and OptiSink technology. This specially shaped heatsink improves heat dissipation from high-stress components such as MOSFET transistors and diodes. More effective cooling increases power stability under high load and extends the operational life of the power supply.
80 PLUS Gold efficiency of the Seasonic Core GX-650
The 80 PLUS Gold certification confirms the power supply's high energy efficiency. At 50% load, it achieves up to 90% efficiency. The PSU converts more energy from the mains into usable power for components and produces less waste heat. Lower heat losses directly contribute to lower running costs and less strain on the entire system's cooling.
Comprehensive system protection with the Seasonic Core GX-650
The power supply integrates a suite of six key protection features that safeguard connected components from damage. These include Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Current Protection (OCP), and Over Power Protection (OPP). It also features Short Circuit Protection (SCP) and Over Temperature Protection (OTP), which together form a comprehensive safety system for the entire computer build.
Connectors
- 1× ATX 24-pin
- 2× CPU 4+4-pin
- 2× PCI-E 6+2-pin
- 1× 12V-2x6 16-pin
- 6× SATA 15-pin
- 3× Molex 4-pin
Package contents
- Seasonic Core GX-650 power supply
- Mounting screws
- 1× Power cable
- 1× ATX 24-pin (20+4)
- 2× CPU 8-pin (4+4)
- 1× 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
80 Plus certification was created to objectively rate the efficiency of computer power supplies. This gives users a simple and clear way to compare different models. On the European market (where a voltage of 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 power supply 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: | UEcgx3 |
| 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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