Seasonic G12 GC-850 850W 80 PLUS Gold ATX PSU
850W ATX PSU with 80 PLUS Gold efficiency (90% at 50% load), Active PFC, LLC design, Smart & Silent Fan Control. Single +12V rail 840W/70A. Non-modular, 120mm fan, 5-year warranty.
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The Seasonic G12 GC-850 is a reliable 850W ATX power supply certified 80 PLUS Gold, delivering at least 87/90/87% efficiency at 20/50/100% loads. It features Active PFC, LLC resonant converter design for reduced energy waste, and Seasonic’s Smart & Silent Fan Control (S2FC) with a 120mm sleeve-bearing fan for optimal cooling and low noise.
Equipped with a powerful single +12V rail (70A/840W) ideal for modern gaming PCs and workstations, it includes full protections: OCP, OVP, OPP, SCP, OTP. Non-modular cabling ensures straightforward installation, with 4x PCIe 6+2-pin connectors for high-end GPUs and 2x 4+4-pin EPS for CPUs. Built by Helly OEM under Seasonic specs, backed by 5-year warranty.
- 80 PLUS Gold certified efficiency
- Smart & Silent 120mm fan control
- Single rail +12V 840W
- Complete protections (OCP/OVP/OPP/SCP/OTP)
- Non-modular, fixed cables
- 5-year limited warranty
| Total power | 850 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Input current | 8 A |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 840 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| Efficiency | 90% |
| Power protection features | Over current, Over power, Under voltage, Over total voltage, Over voltage, Short circuit, Over temperature |
| Cabling type | Non-Modular |
| 80 PLUS certification | 80 PLUS Gold |
| Purpose | PC |
| Power supply unit (PSU) form factor | ATX |
| Mean time between failures (MTBF) | 100000 h |
| Product colour | Black |
| Cooling type | Active |
| Fan diameter | 12 cm |
| Number of fans | 1 fan(s) |
| Fan bearing technology | Sleeve |
| On/off switch | Yes |
| Operating temperature (T-T) | 0 - 50 °C |
| Cables included | AC, CPU, PCIe, SATA |
| PCIe connectors | 4x 6+2-pin |
| EPS/ATX12V connectors | 2x 4+4-pin |
| Compliance certificates | REACH, RoHS, WEEE |
| Certification | cTUVus, TUV, CB, CCC, BSMI, CE, FCC |
| Width | 150 mm |
| Depth | 140 mm |
| Height | 86 mm |
| Package type | Box |
| Warranty period | 5 years |