
Seasonic CORE GX-850 power supply unit 850 W 20+4 pin ATX ATX White
by Seasonic
£127.02from 3 retailers
GTIN04711173878728
EAN4711173878728
MPNSRP-CGX851-A5A32SF-W
Prices updated 18 Mar 2026
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Product Description
850 W 100 - 240 V 50/60 Hz. Motherboard power connector: 20+4 pin ATX. PC ATX 80 PLUS Gold. Active 12 cm. White. CORE GX White ATX 3.1. The updated Seasonic CORE GX White ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards and includes four output ranges from 1000 W to 650 W in both black and white colors. Catering to a broad spectrum of PC enthusiasts and system builders, these power supplies provide a fine balance between cost and performance. The 80 PLUS® Gold certified Seasonic’s Core GX White line is a fully modular design equipped with white cables featuring a braided pattern. These power supplies are solid performers for a large range of applications, where a 120 mm Hydro Dynamic Bearing fan is combined with Seasonic’s Smart and Silent Fan Control to ensure the optimal cooling performance at the lowest possible noise level. These quality power supplies are backed up by Sea Sonic’s 7-year worldwide manufacturer’s warranty.. New Seasonic OptiSink Design. The overall quality and reliability of the new CORE GX White ATX 3.1 Series has been greatly improved by a brand-new PCB (Printed Circuit Board) layout and the implementation of automated surface mount technology during production, which minimizes human production errors.. By using a redesigned PCB combined with smaller MOSFET and heat sink components, the internal space within the power supply was increased to enhance heat dissipation and airflow to result in better component cooling.. The eightfold increase in heat dissipation keeps the internals of the power supply cooler, eventually leading to improved product quality, long-term reliability, and more efficient operation.. The redesigned layout of the power supply components and its improved thermal performance creates versatility and allows the power supply to be safely installed in any orientation.. The OptiSink design is an eco-friendly solution that not only lowers the costs of material usage and production but also leads to energy savings in the long run.. Fully Modular Cables. In Sea Sonic’s patented design feature full modularity comes hand-in-hand with the extensive use of SMD technology to increase the overall performance and reliability of this power supply. The simple and inventive layout scheme helps to attain unsurpassed quality and performance, where efficiency is further enhanced by minimized line resistance, reduced voltage drop and lower impedance. Reduced component count and better space utilization facilitate optimal air flow inside the case and promote heat dissipation, proper cooling and ultimately longer product life.. S2FC - Smart And Silent Fan Control. The intelligent thermal circuit feature is designed to find the optimal balance between the necessity to cool the components and the need to run the power supply in the most silent manner possible.. Power. Power protection features. Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage. Max output current (+5Vsb). 3 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). 15 W. Combined power (-12V). 3.6 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. Fully-Modular. CPU power cable length. 75 cm. CPU power connector (4+4 pin). Yes. PCI Express power connectors (12+4 pin) cable length. 700 mm. PCI Express power connectors (12+4 pin). 1. PCI Express power connectors (6+2 pin). 3. Peripheral (Molex) power cable length. 690 mm. Peripheral (Molex) power connectors (4-pin). 3. SATA power cable length. 750 mm. Number of SATA power connectors. 3. Motherboard power cable length. 61 cm. Motherboard power connector. 20+4 pin ATX. Performance. Mean time between failures (MTBF). 100000 h. Bearing technology. Hypro 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. Fan diameter. 12 cm. Cooling type. Active. Product colour. White. Operational conditions. Operating temperature (T-T). 0 - 50 °C. Weight & dimensions. Height. 86 mm. Depth. 150 mm. Width. 140 mm. leaflet
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