The Seasonic CORE BC-850 ATX 3.1 is an 850W desktop power supply for PC builders putting together a gaming system or a capable general-purpose computer. Its ATX/EPS form factor suits compatible desktop cases, while support for current graphics card power connections makes it a practical choice for new builds and upgrades.

With 80 PLUS Bronze certification, the BC-850 is designed to convert power efficiently, while its 120 mm Hydro Dynamic Bearing fan and S²FC fan control adjust cooling to system needs. It includes a native 12V-2x6 cable for compatible PCIe 5.1 graphics cards, as well as PCIe 8-pin connections for cards using traditional power inputs. The 140 mm length helps with case planning, and individual black cables with a braided pattern give the fixed-cable design a neat finish.

Key features

• 850W continuous power for desktop components.
• ATX 3.1 and PCIe 5.1 support for modern PC builds.
• Native 12V-2x6 cable supports compatible graphics cards with up to 600W power delivery.
• PCIe 8-pin cable connections support graphics cards using traditional connectors.
• 120 mm Hydro Dynamic Bearing fan combines with S²FC fan control for temperature-responsive cooling.
• Fixed black cables have an individual braided pattern.
• OCP, OPP, OTP, OVP, SCP and UVP protections help guard against electrical faults.

Compatibility

Designed for systems with an ATX/EPS power supply space. Check your case dimensions and confirm that the supplied connectors meet your motherboard and graphics card requirements. Use the 12V-2x6 cable only with a compatible graphics card; the 850W model supports up to 600W delivery on this connection. Good to know: all cables are fixed to the power supply, so unused cables cannot be detached.

In the box

• Seasonic CORE BC-850 ATX 3.1

Specifications

For a gaming or everyday desktop build that needs 850W and current graphics card support, the CORE BC-850 combines a compact ATX design with straightforward fixed cabling and Seasonic cooling control.