Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 2
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 3
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 4
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 5
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 6
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 7
Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1, photo 8
Seasonic

Seasonic CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1

SKU HC-229917MPN SRP-CGC851-A5A32SF

  • 850 W
  • 80 Plus Gold
  • ATX

Highlights

  • 850W total output with 840W on single 12V rail
  • 80 PLUS Gold certified for high efficiency
  • Native 12V-2x6 connector delivers up to 600W
  • 120mm FDB fan with S2FC intelligent speed control
  • Fixed black cables with braided appearance
  • OCP, OVP, OTP, SCP, UVP, OPP protection suite

Key specs

Wattage
850 W
Efficiency
80 Plus Gold
Fully modular
No
Form factor
ATX
12V-2x6 connector
Yes
Fan Size
120 mm
All specifications
$78.99
  • ≈ 0.001024 BTC
  • ≈ 0.0345 ETH
  • ≈ 79.07 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Manufacturer warranty: 5 years
  • 30-day returns Unused items in original packaging
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Overview

The Seasonic CORE GC-850 is an 850W ATX 3.1 power supply with 80 PLUS Gold efficiency and a native 12V-2x6 connector for modern GPUs. It suits high-performance gaming PCs requiring reliable, efficient power delivery.

Design and Build

The unit measures 140mm deep, 150mm wide, and 86mm high, fitting standard ATX cases. Fixed black cables feature a braided look for durability. A robust casing surface resists scratches during installation and upgrades.

Performance and Efficiency

The single 12V rail provides up to 840W for CPU and GPU demands. 80 PLUS Gold certification reduces energy waste and heat output. The 12V-2x6 connector supplies up to 600W to PCIe 5.1 graphics cards without adapters.

Cooling and Noise

A 120mm fluid dynamic bearing fan uses S2FC control to adjust speed based on temperature. Lower loads run quieter; higher loads increase airflow for reliable cooling. Semi-passive mode is not supported.

Connectivity and Protection

Includes two 4+4-pin CPU, one 12V-2x6, three 6+2-pin PCIe, two SATA, and one Molex connector. Comprehensive protection circuits guard against overcurrent, overload, overvoltage, undervoltage, short circuit, and overheating.

CORE GC-850 850W 80 PLUS Gold Power Supply PCIe 5.1 ATX 3.1 specifications

General
BrandSeasonic
Manufacturer part no.SRP-CGC851-A5A32SF
EAN4711173879114
Warranty5 years (manufacturer)
Fan Specifications
Fan Size120 mm
Power Supply
PSU FormatATX
ATX StandardATX 3.1
12V Distributionsingle rail
Modular Power SupplyNo
Modular Typeno
Protection CircuitsOCP (Overcurrent Protection), OPP (Overload Protection), OTP (Overtemperature Protection), OVP (Overvoltage and Undervoltage Protection), SCP (Short-Circuit Protection), UVP (Undervoltage Protection)
Power Specifications
Total Power Output850 W
Power Output +3.3V & +5V (combined)100 W
Power Output +12V rails840 W
Power Output -12V3.6 W
Power Output +5Vsb12.5 W
Cable Specifications
Max. CPU Power Cable Length600 mm
Max. 24-Pin Motherboard Power Cable Length550 mm
Max. 12V-2x6 Cable Length500 mm
Cable Specifications (continued)
Max. PCIe Power Cable Length500 mm
Max. SATA Power Cable Length600 mm
Max. Molex Cable Length600 mm
Cooling
Semi Passive Power SupplyNo
Internal Ports
CPU Power Connectors 12V ATX/EPS2
CPU Power Supply2x 4+4-Pin
12V-2x6 Power Connectors1
6+2 Pin PCIe Power Connectors3
SATA Power Connectors2
4 Pin Molex Power Connectors1
Efficiency Class
80PLUS Efficiency80 PLUS Gold
Lighting
Lighting / RGBNo
Color
Primary ColorBlack
Dimensions
Length / Depth140 mm
Width150 mm
Height86 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2$5.90
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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