Seasonic CORE GC-850 ATX 3.1 850W 80 Plus Gold Power Supply
Reliable ATX 3.1 Power for Modern Gaming and Performance PCs
The Seasonic CORE GC-850 ATX 3.1 delivers dependable power, high efficiency and next-generation GPU support in a compact, high-quality design. Engineered around Seasonic's renowned reliability, this 850W power supply is fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, making it ideal for modern gaming systems, content creation workstations and high-performance desktop PCs.
Featuring 80 Plus Gold certification, a quiet 120mm Hydro Dynamic Bearing fan, advanced protection technologies and native 12V-2x6 PCIe Gen 5.1 connectivity, the CORE GC-850 is ready to power today's most demanding components and tomorrow's upgrades.
Key Features & Benefits
Reliable 850W Continuous Power
Delivering 850W of stable continuous output, the CORE GC-850 is designed to support powerful modern systems with ease.
Ideal for:
- Gaming PCs
- Workstations
- Content Creation Systems
- RTX 40 Series Graphics Cards
- RTX 50 Series Graphics Cards
- High-Core-Count CPUs
- Future Hardware Upgrades
ATX 3.1 & PCIe 5.1 Ready
Built to the latest power supply standards, the CORE GC-850 provides superior compatibility with modern hardware.
Features include:
- Full ATX 3.1 Compliance
- PCIe 5.1 Ready
- Improved Power Excursion Handling
- Enhanced Stability for Modern GPUs
- Future-Ready Design
Perfect for next-generation graphics cards requiring higher transient power loads.
Native 12V-2x6 Connector
The included native 12V-2x6 PCIe Gen 5.1 cable supports up to 600W power delivery, eliminating the need for adapters.
Benefits:
- Cleaner installation
- Improved cable management
- Stable GPU power delivery
- Safer connection design
- Full compatibility with modern graphics cards
Compatible with:
- NVIDIA GeForce RTX 40 Series
- NVIDIA GeForce RTX 50 Series
- Future PCIe 5.1 GPUs
Legacy GPU Support Included
In addition to the next-generation connector, Seasonic includes traditional PCIe power cables for compatibility with older graphics cards.
This makes upgrading your PSU simple without requiring a GPU upgrade.
80 Plus Gold Certified Efficiency
Achieve excellent power efficiency with 80 Plus Gold certification, reducing power waste and heat generation.
Advantages include:
- Lower electricity consumption
- Reduced operating temperatures
- Greater power efficiency
- Improved system stability
- Lower overall running costs
Premium Cooling with S²FC Technology
The advanced Smart and Silent Fan Control (S²FC) system intelligently adjusts cooling performance based on PSU temperature.
Benefits:
- Quiet low-load operation
- Efficient cooling under load
- Reduced fan noise
- Improved longevity
The intelligent fan profile ensures the perfect balance between thermal performance and acoustic comfort.
120mm Hydro Dynamic Bearing Fan
The high-quality 120mm HDB fan delivers long-lasting and reliable cooling.
Features:
- Quiet operation
- Enhanced durability
- Improved thermal efficiency
- Consistent airflow
Proven Seasonic Reliability
Backed by decades of PSU engineering expertise, the CORE GC-850 is built for dependable long-term performance.
Reliability Features:
- 100,000 Hour MTBF
- High-Quality Internal Components
- Stable Voltage Regulation
- Comprehensive Protection Circuits
Individual Braided Black Cables
The premium cable design improves both aesthetics and airflow.
Benefits include:
- Cleaner cable management
- Professional appearance
- Easier routing
- Enhanced airflow within the chassis
Perfect for gaming and showcase PC builds.
Advanced Protection Systems
Comprehensive industrial-grade protections help safeguard your system.
Protection Features:
- OCP (Over Current Protection)
- OPP (Over Power Protection)
- OTP (Over Temperature Protection)
- OVP (Over Voltage Protection)
- SCP (Short Circuit Protection)
- UVP (Under Voltage Protection)
Providing peace of mind during heavy gaming and demanding workloads.
Ideal For
- Gaming PCs
- RTX 40 Series Builds
- RTX 50 Series Builds
- Content Creation Workstations
- Streaming Systems
- High-End AMD Ryzen Systems
- Intel Core Gaming PCs
- Future-Proof Enthusiast Builds
Technical Specifications
General
- Brand: Seasonic
- Model: CORE GC-850 ATX 3.1
- Part Number: SRP-CGC851-A5A32SF
- Colour: Black
- Form Factor: ATX / EPS
Power Output
- Total Continuous Power: 850W
- 80 Plus Gold Certified
Electrical Specifications
- AC Input Voltage: 100V - 240V
- Input Current: 9A - 4.5A
- Frequency Range: 50Hz - 60Hz
- Full Range Input Support
Cooling
- 120mm Fan
- Hydro Dynamic Bearing (HDB)
- Smart & Silent Fan Control (S²FC)
Reliability
- Fan Life Expectancy: 40,000 Hours
- MTBF: 100,000 Hours
Connectivity
- Native 12V-2x6 PCIe Gen 5.1 Cable
- Legacy PCIe 8-Pin GPU Support
- ATX Motherboard Connectivity
- CPU Power Connectors
- SATA Power Support
Protection Features
- OCP
- OPP
- OTP
- OVP
- SCP
- UVP
Environmental
- Operating Temperature: 0°C to 40°C
Compliance
- CE
- CB
- CCC
- cTUVus
- TUV
- BSMI
- EAC
- UKCA
Environmental Standards
- Energy Star
- RoHS
- REACH
- WEEE
- ErP Lot 6
Warranty
- 5-Year Manufacturer Warranty
Why Choose the Seasonic CORE GC-850?
The Seasonic CORE GC-850 ATX 3.1 combines trusted Seasonic engineering, modern power standards and excellent efficiency into a dependable power supply for today's most demanding PC builds. With 850W of continuous power, ATX 3.1 and PCIe 5.1 compliance, a native 12V-2x6 connector, 80 Plus Gold efficiency, intelligent S²FC cooling, and premium braided cables, it offers everything needed for a clean, stable and future-ready gaming or workstation system. Whether you're upgrading an existing PC or building a next-generation rig, the CORE GC-850 delivers the performance, reliability and efficiency expected from one of the industry's most respected PSU manufacturers.