SeaSonic Core BC-850 850W Fully Wired 80+ Bronze ATX 3.1 Black Power Supply
850W SeaSonic Core BC-850 PSU, Black, Fully Wired, 80 PLUS Bronze, Single Rail, 70A, 120mm Fan, ATX 3.1
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Core BC 850W 80 PLUS Bronze ATX 3.1 Power Supply from Seasonic
Power Made Simple The Seasonic Core BC ATX 3.1 850W Power Supply is a fixed-cable ATX 3.1 compliant PSU designed to deliver stable and efficient power delivery for modern PC systems. The Core BC 850W model is engineered around Seasonic’s established platform architecture, combining 80 PLUS Bronze efficiency with a compact 140mm chassis design for broad case compatibility. The PSU supports current-generation hardware requirements while maintaining a simplified internal layout focused on durability and long-term operational stability. With ATX 3.1 compliance, the Core BC 850W is built to handle modern transient power demands and GPU load characteristics, ensuring consistent electrical delivery under variable system conditions. The PSU also features a 120mm hydro dynamic bearing fan paired with Smart and Silent Fan Control (S²FC) to regulate cooling performance dynamically based on internal temperature thresholds. The PSU also features fixed black sleeved cables for straightforward installation and reduced system complexity. A durable chassis design with a compact footprint ensures compatibility with a wide range of mid-tower and compact ATX cases, while maintaining airflow efficiency and structural rigidity.
850WWattage
80 PLUS® BronzeEnergy Efficiency Certification
ATX 3.1Form Factor
Efficiency & Electrical Performance
80 PLUS® Bronze Certified The Seasonic Core BC 850W is certified with 80 PLUS Bronze efficiency, ensuring effective power conversion with reduced energy loss during operation. The PSU is designed to optimise AC-to-DC conversion efficiency across typical load ranges, supporting consistent system stability and reduced thermal output during sustained workloads. The PSU delivers 850W total output with a +12V rail capacity of 70A, ensuring strong single-rail performance for modern high-demand components.
Cooling System & Acoustic Control
Intelligent Fan Control Technology The Core BC 850W incorporates a 120mm hydro dynamic bearing fan managed through Smart and Silent Fan Control (S²FC). The PSU dynamically adjusts fan speed based on internal temperature conditions to maintain thermal balance while reducing unnecessary acoustic output during low-load operation.
Precision Craftsmanship
Build Design & Cable Layout Featuring a fixed cable configuration with individually sleeved black cables for main power delivery. The PSU is built with a compact internal layout designed to optimise airflow and maintain structural efficiency within a 140mm form factor chassis. The 850W variant includes expanded PCIe and GPU power connectivity compared to lower wattage models, supporting higher power graphics configurations.
ATX 3.1 Compliance & Power Stability The Seasonic Core BC 850W operates in accordance with the ATX 3.1 specification, ensuring compatibility with modern GPU power excursion standards and system-level transient response requirements. The PSU is designed to maintain stable voltage regulation under rapid load changes, supporting next-generation graphics hardware and high-performance computing components.
