Seasonic CORE GC ATX 3.1 CORE GC-850 ATX 3.1

Name: Seasonic CORE GC ATX 3.1 CORE GC-850 ATX 3.1
Brand: Seasonic
Price: 101.67 GBP
Availability: InStock

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Scan.co.uk →	£89.99	Overclockers.co.uk →	£89.95
Backtotheoffice.co.uk →	£97.99	LaptopHub.uk →	£97.85
Pcnova.co.uk →	£97.85	Gamingkit.co.uk →	£99.80
Tradeinn.com →	£106.99	Quzo.co.uk →	£132.97

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Seasonic CORE GC ATX 3.1 CORE GC-850 ATX 3.1

from £89.95 up to £132.97

Prices ₈ Description User reviews Ask Question

Head

Seasonic CORE GC ATX 3.1 CORE GC-850 ATX 3.1

2026 CORE 80+ Gold 5 year warranty

750 W850 W

Main
Power	850 W
Form factor	ATX


Specs
PFC	active
Cooling system	active
Fan size	120 mm
Fan bearing	hydrodynamic
Certification	80+ Gold
ATX12V version	3.1


Power connectors
MB/CPU power supply	24+8+8(4+4) pin
SATA	2
MOLEX	1
PCIe 8pin (6+2)	3
PCIe 16pin	1 pcs
Cable system	non-modular
Braided wires


Cable length
MB	550 mm
CPU	600 mm
PCIe	550 mm

Max. power
+3.3V	20 А
+5V	20 А
+12V1	70 А
-12V	0.3 А
+5Vsb	2.5 А
+12V	840 W
+3.3V +5V	100 W
-12V	3.6 W
+5Vsb	12.5 W


General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
Protection	OCP, OTP, UVP
Manufacturer's warranty	5 years
Dimensions (HxWxD)	86x150x140 mm
Official Website	seasonic.com
Added to E-Catalog	June 2026

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.

How to choose a power supply for a PCBasics of choosing a reliable and balanced power supply for your home, office and gaming computer

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	SeaSonic Core GC-850 850W Fully Wired 80+ Gold ATX 3.1 Black Power Sup Scan.co.uk Delivery: to United Kingdom Report	£89.99 Buy in shop

	Seasonic Seasonic Core GC 850W ATX 3.1 PCIe 5.1 80 Plus Gold Power Supply SRP-CGC851-A5A32SF The Seasonic CORE GC Series delivers reliable performance and modern ATX 3.1 compliance at an essential value. Designed for e... moreveryday 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. Optimized for PCIe 5.1 GPUs The CORE GC ATX 3.1 power supply features a native 12V-2x6 cable designed for the latest PCIe 5.1 graphics cards. With support for up to 600 W of power delivery, this cable ensures safe and stable performance for NVIDIA RTX 40 and 50 Series and future high-end GPUs. Enjoy a clean, efficient setup that’s fully compliant with ATX 3.1 and PCIe 5.1 standards. Full Support for Legacy GPUs To ensure compatibility with older GPUs, the CORE GC ATX 3.1 includes a 2× 8-pin PCIe cable. It delivers reliable power up and works seamlessly with graphics cards from previous generations. This cable makes it easy to upgrade your PSU without changing your GPU—perfect for users who want next-gen power with legacy support. 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. Overclockers.co.uk Delivery: to United Kingdom Report	£89.95 Buy in shop

	Seasonic CORE GC-850 ATX 3.1 power supply unit 850 W 20+4 pin ATX Black SRP-CGC851-A5A32SF 850 W 100 - 240 V 50/60 Hz. Motherboard power connector: 20+4 pin ATX. PC ATX 80 PLUS Gold. Active 12 cm. Black. CORE GC – Po... morewer 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.. Power. Power protection features. Over current, Over power, Under voltage, Over voltage, Short circuit, Overheating. Max output current (+5Vsb). 2.5 A. Max output current (-12V). 0.3 A. Max output current (+5V). 20 A. Max output current (+12V). 70 A. Max output current (+3.3V). 20 A. Combined power (+5Vsb). 12.5 W. Combined power (-12V). 3.6 W. Combined power (+5V). 100 W. Combined power (+12V). 840 W. Combined power (+3.3V). 100 W. Input current. 11 - 5.5 A. AC input frequency. 50/60 Hz. AC input voltage. 100 - 240 V. Total power. 850 W. Ports & interfaces. Cabling type. Non-Modular. PCI Express connector. Yes. ATX power connector (20+4 pin). Yes. CPU power cable length. 60 cm. CPU power connector (4+4 pin). Yes. PCI Express power cable length. 55 cm. PCI Express power connectors (6+2 pin). 3. EPS power connector (8-pin). Yes. Peripheral (Molex) power cable length. 600 mm. Peripheral (Molex) power connectors (4-pin). 1. SATA power cable length. 600 mm. Number of SATA power connectors. 2. Motherboard power cable length. 55 cm. Motherboard power connector. 20+4 pin ATX. Performance. Mean time between failures (MTBF). 100000 h. Bearing technology. Ball bearing. ATX version. 3.1. 80 PLUS certification. 80 PLUS Gold. Power supply unit (PSU) form factor. ATX. Purpose. PC. Design. On/off switch. Yes. Number of fans. 1 fan(s). Fan diameter. 12 cm. Cooling type. Active. 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, Backtotheoffice.co.uk Delivery: in United Kingdom Report	£97.99 Buy in shop

	Seasonic CORE GC-850 ATX 3.1 power supply unit 850 W 20+4 pin ATX Blac SRP-CGC851-A5A32SF Seasonic CORE GC-850 ATX 3.1 power supply unit 850 W 20+4 pin ATX Black LaptopHub.uk Delivery: in United Kingdom Report	£97.85 Buy in shop

	Seasonic CORE GC-850 ATX 3.1 power supply unit 850 W 20+4 pin ATX Blac Seasonic CORE GC-850 ATX 3.1 power supply unit 850 W 20+4 pin ATX Black CORE GC – Power Made SimpleThe Seasonic CORE GC Serie... mores 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 CableIncludes native 12V-2x6 and 2× 8-pin cables for maximum compatibilityS2FC - Intelligent Fan Control TechnologyThe 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. Pcnova.co.uk Delivery: in United Kingdom Report	£97.85 Buy in shop

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