CORE GC – Power Made Simple
The Seasonic CORE GC Series delivers reliable performance and modern ATX 3.1 compliance at an essential value. Designed for everyday builders and gamers, it embodies Seasonic’s trusted quality in a compact 140 mm design with a durable scratch-resistant finish.
With 80 PLUS® Gold efficiency, Smart and Silent Fan Control (S2FC), and a 120 mm HDB fan, it ensures cool, quiet, and stable operation. The CORE GC-750 and CORE GC-850 include a 12V-2×6 PCIe Gen 5.1 cable, ready for the latest GPUs, while the CORE GC-650 meets all ATX 3.1 requirements with traditional connectors.
Built on decades of engineering excellence, the CORE GC Series delivers the quiet efficiency, reliability, and durability that define every Seasonic power supply.
Next-Gen and Legacy GPU Cable
Includes native 12V-2x6 and 2× 8-pin cables for maximum compatibility
S2FC - Intelligent Fan Control Technology
The Smart and Silent Fan Control (S2FC) system intelligently regulates the power supply’s fan speed to achieve the ideal balance between cooling efficiency and silent operation. By dynamically adjusting the fan curve according to temperature, it ensures that your system remains quiet during low-to-medium usage and effectively cooled when performance demands increase.
General
| Unit Calculated Weight | 2.69 kg |
| Unit Calculated Volume | 0.00648 cubm |
| Units per Shipping Box | 5 |
| Units per Pallet | 0 |
| Model name | CORE GC-850 ATX 3.1 |
| Summary | Seasonic CORE GC-850 ATX 3.1. Total power: 850 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz. Motherboard power connector: 20+4 pin ATX, Motherboard power cable length: 55 cm, SATA power cable length: 600 mm. Purpose: PC, Power supply unit (PSU) form factor: ATX, 80 PLUS certification: 80 PLUS Gold. Product colour: Black, Cooling type: Active, Fan diameter: 12 cm. Cables included: AC |
| CnCode | 85044095 |
| Unit Box Height | 0.185 |
| Unit Box Length | 0.115 |
| Unit Box Width | 0.24 |
Power
| AC input frequency | 50/60 Hz |
| AC input voltage | 100 - 240 V |
| Combined power (+12V) | 840 W |
| Combined power (+3.3V) | 100 W |
| Combined power (+5V) | 100 W |
| Combined power (+5Vsb) | 12.5 W |
| Combined power (-12V) | 3.6 W |
| Input current | 11 - 5.5 A |
| Max output current (+12V) | 70 A |
| Max output current (+3.3V) | 20 A |
| Max output current (+5V) | 20 A |
| Max output current (+5Vsb) | 2.5 A |
| Max output current (-12V) | 0.3 A |
| Power protection features | Over current/Over power/Over voltage/Overheating/Short circuit/Under voltage |
| Total power | 850 W |
Ports & interfaces
| ATX power connector (20+4 pin) | Yes |
| Cabling type | Non-Modular |
| CPU power cable length | 600 mm |
| CPU power connector (4+4 pin) | Yes |
| EPS power connector (8-pin) | Yes |
| Motherboard power cable length | 550 mm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 2 |
| PCI Express connector | Yes |
| PCI Express power cable length | 550 mm |
| PCI Express power connectors (6+2 pin) | 3 |
| Peripheral (Molex) power cable length | 600 mm |
| Peripheral (Molex) power connectors (4-pin) | 1 |
| SATA power cable length | 600 mm |
Performance
| 80 PLUS certification | 80 PLUS Gold |
| ATX version | 3.1 |
| Bearing technology | Ball bearing |
| Mean time between failures (MTBF) | 100000 h |
| Power supply unit (PSU) form factor | ATX |
| Purpose | PC |
Design
| Cooling type | Active |
| Fan diameter | 120 mm |
| Number of fans | 1 fan(s) |
| On/off switch | Yes |
| Product colour | Black |
Operational conditions
| Operating relative humidity (H-H) | 15 - 65 % |
| Operating temperature (T-T) | 0 - 40 °C |
Packaging content
| Cables included | AC |
Certificates
| Certification | CE, CB, CCC, cTUVus, TUV, BSMI, EAC, UKCA, Energy Star, RoHS, REACH, WEEE, ErP Lot 6 |
| Compliance certificates | BSMI/CB/CE/China Compulsory Certification (CCC)/cTUVus/EAC/REACH/RoHS/UKCA/WEEE |
Weight & dimensions
| Depth | 140 mm |
| Height | 86 mm |
| Width | 150 mm |
Packaging data
| Package type | Box |
Technical details
| Sustainability certificates | ENERGY STAR/ErP |
