The Seasonic CORE GC-850 ATX 3.1 is a powerful 850 W power supply designed for the needs of modern PC builds. ATX 3.1 and PCIe 5.1 compatibility ensure stable power delivery for current-generation graphics cards, and the compact 140 mm depth makes it an excellent choice even for limited spaces. The fixed cable design offers a hassle-free and reliable setup without extra cable management solutions.

Quiet cooling with Smart & Silent Fan Control (S²FC)

80 PLUS Gold efficiency reduces wasted heat and keeps energy consumption in check, which also improves the cooling system’s performance. Seasonic’s Smart & Silent Fan Control (S²FC) adjusts the fan speed based on load, providing near-silent operation during light use and effective cooling as demand increases.

High efficiency and long-term reliability with 80 PLUS Gold certification

The CORE GC-850 ATX 3.1 utilizes Seasonic’s advanced design and reliable component selection. Extensive protection features and a high MTBF value guarantee long-lasting, stable, and safe operation. This makes it a dependable solution for both gaming and demanding workstation builds.

Features

• ATX 3.1 and PCIe 5.1 compatibility
• 80 PLUS Gold efficiency
• Smart & Silent Fan Control (S²FC)
• Compact 140 mm deep design
• Fixed cables
• High reliability and quality design

Technical specifications

• Total power: 850 W
• AC input voltage: 100–240 V
• AC input frequency: 50/60 Hz
• Input current: 11–5.5 A
• Combined power (+3.3 V): 100 W
• Combined power (+12 V): 840 W
• Combined power (–12 V): 3.6 W
• Combined power (+5Vsb): 15 W
• Maximum output current (+3.3 V): 20 A
• Maximum output current (+12 V): 70 A
• Maximum output current (+5 V): 20 A
• Maximum output current (–12 V): 0.3 A
• Maximum output current (+5Vsb): 3 A
• Power supply protections: Overcurrent, Overpower, Undervoltage, Overvoltage, Short circuit
• Motherboard power connector: 24-pin ATX
• Peripheral (Molex) 4-pin connectors: 2
• Motherboard power cable length: 61 cm
• SATA connectors: 2
• PATA connectors: 2
• Cabling type: Fixed cables
• Purpose: PC
• Standard: ATX
• 80 PLUS certification: Gold
• ATX version: 3.1
• Mean time between failures (MTBF): 100,000 h
• Color: Black
• Cooling: Active
• Fan size: 120 mm
• Number of fans: 1
• On/off switch: Yes
• Operating temperature: 0–50 °C
• Included cables: AC, CPU, PCIe, Peripheral (Molex) to SATA 3.3, SATA
• Compliance: BSMI, CB, CCC, CE, EAC, REACH, RoHS, UKCA, WEEE, cTUVus
• Certifications: OCP, OPP, OTP, SCP, OVP, UVP, BSMI, C-tick, CB, CCC, CE, cTUVus, EAC, FCC, TUV, UKCA, ErP Lot 6, Energy Star, REACH, RoHS, WEEE
• Sustainability certifications: ENERGY STAR
• Dimensions (L × W × H): 150 × 140 × 86 mm

Package contents

• Seasonic CORE GC-850 ATX 3.1 power supply
• AC power cord
• Processor (CPU) power cable
• PCIe cables
• Peripheral (Molex) to SATA 3.3 adapter cable
• SATA cables