Seasonic PRIME-PX-850 Prime Px-850 Power Supply PRIME-PX-850

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� PLATINUM
The PRIME Platinum Series achieves 80 PLUS� Platinum certification with its 92 % efficiency at 50 % system load.

MICRO TOLERANCE LOAD REGULATION
Seasonic�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 CONTROL
Seasonic�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 BEARING
High 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 WORKS
When 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 DESIGN
Seasonic�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.

Design



Cooling type



Active


Fan diameter



13.5 cm


Fan location



Top


Number of fans



1 fan(s)


On/off switch



Yes


Product colour



Black


Logistics data



Harmonized System (HS) code



84733020


Operational conditions



Operating temperature (T-T)



0 - 50 �C


Other features



Number of screws



4


Screws included



Yes


Package dimensions



Gross Weight (Package, kg)



0.65 kg


Packaging content



Cables included



AC, PCIe, SATA


Packaging data



Manual



Yes


Performance



80 PLUS certification



80 PLUS Platinum


Bearing technology



FDB


Certification



cTUVus, TUV, CB, CCC, BSMI, EAC, CE WEEE, ErP Lot 6, REACH


Mean time between failures (MTBF)



150000 Hour


Power supply unit (PSU) form factor



ATX


Purpose



PC


Ports & interfaces



ATX power connector (20+4 pin)



Yes


Cabling type



Modular


CPU power cable length



65 cm


CPU power connector (4+4 pin)



Yes


Floppy disk drive cable length



10.1 cm


Floppy disk drive connector



Yes


Floppy drive power connector



1


Motherboard power cable length



61 cm


Motherboard power connector



20+4 pin ATX


Number of SATA power connectors



14


PCI Express connector



Yes


PCI Express power connectors (6+2 pin)



6


Peripheral (Molex) power cable length



470, 690


Peripheral (Molex) power connectors (4-pin)



5


SATA power cable length



450, 470, 570, 700, 760, 810, 860


Power



AC input frequency



50 - 60 Hz


AC input voltage



100 - 240 V


Combined power (+12V)



840 Watt


Combined power (+3.3V)



100 Watt


Combined power (+5V)



100 Watt


Combined power (+5Vsb)



12.5 Watt


Combined power (-12V)



3.6 Watt


Input current



11 - 5.5 A


Max output current (+12V)



70 A


Max output current (+3.3V)



20 A


Max output current (+5V)



20 A


Max output current (+5Vsb)



2.5 A


Max output current (-12V)



0.3 A


Power protection features



Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage


Total power



850 Watt


Product dimensions



Net Weight (Product, kg)



0.5 kg


Product Depth



14 cm


Product Height



8.6 cm


Product Width



15 cm


Technical details



Sustainability certificates



RoHS, ENERGY STAR


Vendor information



Brand Name


Seasonic


Warranty



1 Year(s)