Seasonic Prime GX-850 power supply unit 850 W 20+4 pin ATX ATX Black

Seasonic Prime GX-850 power supply unit 850 W 20+4 pin ATX ATX Black

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£19799

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Seasonic Prime GX-850 power supply unit 850 W 20+4 pin ATX ATX Black

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Price updated on May 24, 2025 at 2:21 PM

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£20502

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Seasonic Prime GX-850 850W PSU 80 Plus Gold Modular Power Supply

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Price updated on August 6, 2025 at 5:56 PM

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 Product Specifications


Brand

SEASONIC

Category

PC Power Supply

Product listed on

April 11, 2025

EAN Code

4711173874232






 Description by backtotheoffice


80 PLUS® Gold certified Micro Tolerance Load Regulation (0.5 %) Cable-free Connection Design Premium Hybrid Fan Control - Fanless until 40 % load Multi-GPU setup Gold plated connectors Pressing on with its One Seasonic Initiative, the PRIME TX, PRIME PX and PRIME GX series became the successors to the Seasonic PRIME and PRIME Ultra series.The PRIME Series has always demonstrated outstanding performance and have become the epitome of technological excellence and quality through the years.

This third generation of PRIME Series rolled out not only with a uniformed naming scheme but also with updated general design and connection cables. As each new model in these PRIME series have their distinctive set of features and specifications, prospective customers will find a streamlined buying guidance through understanding the One Seasonic process.80 PLUS® GOLDThe PRIME Gold Series achieves 80 PLUS® Gold certification with its 90 % efficiency at 50 % system load.MICRO TOLERANCE LOAD REGULATIONSeasonic´s latest design keeps the output voltage within a very tight range, achieving under 0.5 % load regulation.

This impressive electrical performance and stability makes this power supply an ideal choice for high-performance systems.PREMIUM HYBRID FAN CONTROLSeasonic´s vast experience in designing the most silent and efficient power supplies on the market was translated into the development of Hybrid Mode; a state-of-the-art fan control that enables users to keep the overall fan noise at the lowest possible level.FLUID DYNAMIC FAN BEARINGHigh performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil.

They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.HOW IT WORKSWhen the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces.

As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.CABLE-FREE CONNECTION DESIGNSeasonic´s engineers have implemented a new design feature, where instead of cables; the back panel and the PCB (Printed Circuit Board) are connected by a copper plate.

This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality. Power Power protection features Over power, Over voltage, Overheating, Short circuit, Under voltage Max output current (+5 Vsb) 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 (+5 Vsb) 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 Fully-Modular PCI Express connector Yes Floppy drive power connector 1 Floppy disk drive cable length 10.1 cm Floppy disk drive connector Yes ATX power connector (20+4 pin) Yes CPU power cable length 65 cm CPU power connector (4+4 pin) Yes PCI Express power connectors (6+2 pin) 6 Peripheral (Molex) power connectors (4-pin) 5 SATA power cable length 450,470,570,700,760 mm Number of SATA power connectors 14 Motherboard power cable length 61 cm Motherboard power connector 20+4 pin ATX Performance Mean time between failures (MTBF) 150000 h Bearing technology FDB 80 PLUS certification 80 PLUS Platinum Power supply unit (PSU) form factor ATX Purpose PC Design On/off switch Yes Fan location Top Number of fans 1 fan(s) Fan diameter 13.5 cm Cooling type Active Product colour Black Operational conditions Operating temperature (T-T) 0 - 50 °C Packaging content Cables included AC, PCIe, SATA Certificates Certification cTUVus, TUV, CB, CCC, BSMI, EAC, CEWEEE, ErP Lot 6, REACH Compliance certificates RoHS Weight & dimensions Height 86 mm Depth 170 mm Width 150 mm Packaging data Package type Box Manual Yes Technical details Sustainability certificates ENERGY STAR Logistics data Harmonized System (HS) code 84733020 Other features Number of screws 4 Screws included Yes manual pdf leaflet



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