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Seasonic PRIME TX PRIME TX-850

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Seasonic PRIME TX PRIME TX-850
PRIMEsemi-passive coolingmining80+ Titanium12 year warranty
850 W
24+8+8(4+4) pin
1000 W
24+8+8(4+4) pin
1300 W
24+8+8+8 pin
1600 W
24+8+8+8 pin
Main
Power850 W
Form factorATX
Specs
PFCactive
Efficiency96 %
Cooling systemsemi-passive (fan off)
Fan size135 mm
Fan bearinghydrodynamic
Certification80+ Titanium
ATX12V version2.4
Power connectors
MB/CPU power supply24+8+8(4+4) pin
SATA10
MOLEX5
PCI-E 8pin (6+2)6
Floppy
Cable systemmodular
Braided wires
Cable length
MB610 mm
CPU650 mm
SATA860 mm
MOLEX690 mm
PCI-E750 mm
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
Manufacturer's warranty12 years
Dimensions (HxWxD)86x150x170 mm
Official Websiteseasonic.com
Added to E-CatalogMay 2018
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Seasonic 2025 - new arrivals, bestsellers, and the most relevant models Seasonic.
How to choose a power supply for a PCBasics of choosing a reliable and balanced power supply for your home, office and gaming computer

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Seasonic Prime TX-850 Fully Modular PC-Power Supply 80PLUS TITANIUM 850 Watt

80 Plus Titanium Micro Tolerance Load Regulation (0.5 %) Cable-free Connection Design Premium Hybrid Fan Control - fanless... moreuntil 40 % load Multi-gpu setup// gold plated connectors
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£262.98
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Seasonic Seasonic Prime TX-850 850W 80 Plus Titanium Modular Power Supply PRIME-TX-850

Seasonic has entered the competitive arena that is the power supply market once again, this time with the compelling Prime se... moreries, this time in the form of the TX which represents the flagship. Offering outstanding efficiency, high performance, modular cable management and chic design, this third generation of Seasonic PSUs manages to offer excellent load regulation with a tolerance of just half a percent.The Seasonic Prime TX power supply at a Glance:850 watt power supply with strong 70A single railMaximum efficiency due to 80 PLUS Titanium certificateSilent 135 mm fan with semi-passive modeCompletely modular cable management with flat cablesSix 6+2 pin PCIe connectors for graphics cardsPower Supply with 80 PLUS Titanium Efficiency and Powerful 70A Single RailThe Seasonic Prime TX is a powerful power supply and provides 850 Watts total output output, meaning that even high-end gaming PCs with demanding processors and graphics cards will be in good stead with this unit. The powerful 12 Volt rail delivers a full 70A and is also certified 80 PLUS Titanium. Seasonic consistently opts for only the highest quality electronic components, and the internal connections are largely wireless. Furthermore, the completely modular design, with its individually pluggable cables, means that it helps ensure a clean interior along with optimised air flow. The Seasonic Prime TX 850W provides a 24-pin - and two 4+4-pin -cables along with six 6+2-pin PCIe connectors and 14 SATA- and five 4-pin Molex connectors. The result is a PSU with unparalleled connectivity options just waiting to be paired with an enthusiast-class system. Visually, the black power supply with its black-silver grill fits perfectly into just about any case.Adjustable Fan Control with Semi-Passive ModeThe 135 mm fan utilises fluid dynamic bearings, which ensure the unit's smooth operation as well as an exceptionally long operating life. The hybrid switch on the rear panel of the power supply can also be used to switch between automatic fan control both with and without a semi-passive mode. The end result is a power supply that minimises unwanted noise and maximises its cooling power, depending on how much the power supply unit is currently delivering. It almost goes without mentioning that the Prime TX power supplies have all the necessary protective add-ons that modern high-end models should offer. The load regulation operates with a extremely low voltage tolerance of 0.5%. In addition, Seasonic comes with a full twelve-year manufacturer's warranty.Technical Details:Dimensions: 150 x 86 x 170 mm (W x H x D)Fan: 135 mm (Fluid-Dynamic-Bearing, automatic control with semi-passive mode)Efficiency: max. 94% @ 50% load, 80 PLUS Titanium certificateActive PFCForm factor: ATX12VPower: 850 W +3,3V: 20 A +5V: 20 A +3,3V & +5V: 100 W +12V: 70 A / 840 W -12V: 0,3 A / 3,6 W +5Vsb: 3 A / 15 WConnectors (removable): 1x 24-Pin 2x 4+4-Pin 6x 6+2-Pin-PCIe 14x SATA 5x 4-Pin-Molex 1x Floppy-AdapterManufacturer
Overclockers.co.uk
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£259.99
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Seasonic PRIME-TX-850 power supply unit 850 W 20+4 pin ATX ATX Black

Seasonic PRIME-TX-850 power supply unit 850 W 20+4 pin ATX ATX Black
ComputersDeal.com
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£263.81
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Seasonic PRIME TX 850 Watt Full Modular 80+ Titanium PSU/Power Supply

Scan.co.uk
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£259.99
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850W Seasonic PRIME TX Modular 80 Plus Titanium PSU PRIME-TX-850

Pressing on with its One Seasonic Initiative, the PRIME TX, PRIME PX and PRIME GX series became the successors to the Seasoni... morec 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. Digital 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 digital 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. 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. 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.
CCLonline.com
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£256.99
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Seasonic PRIME-TX-850 power supply unit 850 W 20+4 pin ATX ATX Black

Pressing on with its One Seasonic Initiative. the PRIME TX. PRIME PX and PRIME GX series became the successors to the Seasoni... morec 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® TITANIUMThe PRIME Titanium Series achieves the highest level of 80 PLUS® Titanium certification on the market with its 94 % 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.
itsupplies.uk
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£263.81
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Series Seasonic PRIMECompare using chart →
Seasonic PRIME GX GX-1000
from £338.88 
1000 W, 24+8+8(4+4) pin, 8 х 6+2 pin, SATA 12, Molex 5, ATX, modular, Efficiency 90 %, semi-passive СО, mining, certificate 80+ Gold, warranty 12 years
Seasonic PRIME PX PX-1600
from £379.99 
1600 W, 24+8+8+8 pin, 8 х 6+2 pin, 2 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 92 %, semi-passive СО, mining, certificate 80+ Platinum, warranty 12 years
Seasonic PRIME TX TX-1600
from £373.32 
1600 W, 24+8+8+8 pin, 8 х 6+2 pin, 2 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 96 %, semi-passive СО, mining, certificate 80+ Titanium, warranty 12 years
Seasonic PRIME PX PX-2200
from £519.95 
2200 W, 24+8+8+8 pin, 4 х 6+2 pin, 4 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Platinum, warranty 12 years
Seasonic PRIME TX TX-1000
from £339.95 
1000 W, 24+8+8(4+4) pin, 8 х 6+2 pin, SATA 14, Molex 5, ATX, modular, Efficiency 96 %, semi-passive СО, mining, certificate 80+ Titanium, warranty 12 years
Seasonic PRIME FANLESS TX TX-700
from £239.99 
700 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 10, Molex 5, ATX, modular, Efficiency 94 %, certificate 80+ Titanium, warranty 12 years
Seasonic PRIME TX ATX 3.0 TX-1300 A3.0
from £419.99 
1300 W, 24+8+8+8 pin, 6 х 6+2 pin, 1 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 94 %, semi-passive СО, mining, certificate 80+ Titanium, warranty 12 years
Seasonic PRIME TX TX-850
from £256.99 
850 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 10, Molex 5, ATX, modular, Efficiency 96 %, semi-passive СО, mining, certificate 80+ Titanium, warranty 12 years
Seasonic PRIME 1300 W GOLD GX-1300
from £404.92 
1300 W, 24+8+8(4+4) pin, 12 х 6+2 pin, SATA 12, Molex 5, ATX, modular, Efficiency 90 %, semi-passive СО, mining, certificate 80+ Gold, warranty 12 years
Seasonic PRIME PX PX-650
from £243.56 
650 W, 24+8 (4+4) pin, 4 х 6+2 pin, SATA 6, Molex 5, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Platinum, warranty 12 years
Seasonic PRIME FANLESS PX PX-500
from £179.99 
500 W, 24+8+8(4+4) pin, 1 х 6+2 pin, SATA 8, Molex 5, ATX, modular, Efficiency 92 %, certificate 80+ Platinum, warranty 12 years
Seasonic PRIME TX TX-1300
from £589.99 
1300 W, 24+8+8+8 pin, 8 х 6+2 pin, 2 x 16 pin, SATA 18, Molex 3, ATX, modular, Efficiency 96 %, semi-passive СО, mining, certificate 80+ Titanium, warranty 12 years

Seasonic PRIME TX configurations

Price for Seasonic PRIME TX
Seasonic PRIME TX PRIME TX-850from £256.996 offers
Seasonic PRIME TX PRIME TX-1000from £339.951 offer
Seasonic PRIME TX PRIME TX-1300from £589.991 offer
Seasonic PRIME TX PRIME TX-1600from £373.321 offer
Video reviews
An award-winning PSU, now even quieter - Seasonic PRIME TX-1600 Noctua Edition
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Seasonic Best PSU: Prime Titanium TX-1600 Review
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Noctua Released a PSU! Seasonic Prime Noctua TX-1600 ATX v3.1 Review
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An Expensive Disappointment: Seasonic Prime Fanless TX 700W REVIEW
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Seasonic Prime TX-1600 ATX v3.0 PSU Review
2 May 20237 219 view
Seasonic PRIME TX-1600 Noctua Edition Unboxing
27 November 20243 206 view
Seasonic PRIME TX-1600 Unboxing
21 July 2024517 view
Seasonic PRIME Fanless TX-700 Unboxing
26 February 20221 448 view
Seasonic PRIME TX-850 Unboxing
18 February 20211 791 view
Seasonic Prime Titanium TX-1000 Review - The Standard in the Titanium Category?
10 April 202110 708 view
Seasonic Prime TX-1600 Titanium unboxing
1 September 202231 185 view
Seasonic PRIME TX-1000 - Power Supply Review
15 September 20226 880 view
Seasonic PRIME TX-750 Titanium - Power Supply Review
8 October 202015 034 view
Seasonic PRIME TX-850 Unboxing
5 November 20199 020 view
Unboxing the Best PSU - Seasonic Prime TX-750
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Seasonic Prime TX 1000 Powersupply 1000W
29 January 20221 360 view
$11000 USD INSANE Editing PC - ft. Seasonic PRIME TX-1600W + 4 GPU!
11 July 2020815 269 view
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PSU Seasonic PRIME TX-850
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