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Seasonic FOCUS GX ATX 3.0 FOCUS GX-850 ATX 3.0 (SSR-850FX3)

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Seasonic FOCUS GX ATX 3.0 FOCUS GX-850 ATX 3.0
2023FOCUSsemi-passive cooling80+ Gold10 year warranty
750 W850 W1000 W
Main
Power850 W
Form factorATX
Specs
PFCactive
Efficiency90 %
Cooling systemsemi-passive (fan off)
Fan size135 mm
Fan bearinghydrodynamic
Certification80+ Gold
ATX12V version3
Power connectors
MB/CPU power supply24+8+8(4+4) pin
SATA10
MOLEX3
PCI-E 8pin (6+2)3
PCI-E 16pin1
Cable systemmodular
Cable length
MB610 mm
CPU700 mm
SATA950 mm
MOLEX690 mm
PCI-E750 mm
Max. power
+3.3V20 А
+5V20 А
+12V170 А
-12V0.3 А
+5Vsb3 А
+12V840 W
+3.3V +5V100 W
-12V3.6 W
+5Vsb15 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionUVP, OCP, OTP
Manufacturer's warranty10 years
Dimensions (HxWxD)86x150x140 mm
Official Websiteseasonic.com
Added to E-Catalogdecember 2023
P/N
SSR-850FX3

A powerful, reliable and high-tech power supply with modern circuitry that supports the latest power standards (ATX 3.0, PCI-E 5.0, 12VHPWR). Belongs to the premium class, is part of the new FOCUS line, presented by the Taiwanese manufacturer Seasonic in 2023 as the optimal solution for powering the most powerful video cards of the current and next generations. It is positioned by the manufacturer as an advanced solution for enthusiast gamers looking to build an ultra-powerful gaming system with a Ryzen 7/9 processor (or a similar processor from Intel) and a GeForce RTX 4080 video card.

It is also ideal for powering powerful workstations focused on video rendering, 3D modeling and other resource-intensive tasks. The built-in 135 mm fan with fluid dynamic bearings ensures high reliability and low noise levels. The semi-passive cooling system based on three-phase thermal management offers three fan modes: silent, quiet and cooling. FOCUS GX is equipped with various connectors, including 24+8+8 pin for powering the motherboard and processor, 10 SATA and 3 MOLEX for drives, as well as 3 PCI-E 8pin (6+2) and 1 PCI-E 16pin for video cards. The modular cable system simplifies the process of connecting and organizing components inside the case. A wide range of protective systems will allow the PC owner not to worry about the quality of power supply. The high quality and reliability of the device are confirmed by an extended 10-year warranty from the manufacturer.

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 Focus GX power supply unit 850 W 204 pin ATX ATX Black FOCUS V4 GX-850

Can be used for sports, leisure, office, fitness. The motor has a low speed, a smooth shifting speed and a wide speed range.... moreUSB interface for easy charging. Intelligent wind speed control, enjoy the cool feeling brought by different wind speeds. 360 degree universal fit, the wind is free to control.
Amazon.co.uk
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£172.95
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Seasonic FOCUS GX 850 Watt ATX3 Fully Modular 80+ Gold PSU, Black

Scan.co.uk
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£139.99
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Seasonic Focus GX power supply unit 850 W 20+4 pin ATX ATX Black FOCUS-GX-850-V4

CoolingFan diameter12 cmNumber of fans1 fan(s)Cooling typeActivePerformanceOn/off switchYesPower supply unit (PSU) form facto... morerATXSilent modeYes80 PLUS certification80 PLUS GoldPurposePCATX version3.0Mean time between failures (MTBF)100000 hCertificationcTUVus, TUV, CB, CCC, BSMI, EAC, CE, Energy Star, RoHS, WEEE, ErP Lot 6, REACHBearing technologyFDBDesign80 PLUS certification80 PLUS GoldCertificationcTUVus, TUV, CB, CCC, BSMI, EAC, CE, Energy Star, RoHS, WEEE, ErP Lot 6, REACHProduct colourBlac
itsupplies.uk
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£130.79
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Seasonic FOCUS GX-850 Fully Modular 80 Plus Gold PCIe 5.0 / ATX 3.0 Power Supply FOCUS-GX-850-ATX30

Experience top-tier power supply performance with the Seasonic FOCUS GX-850 Fully Modular PSU. This 80 Plus Gold-certified un... moreit boasts PCIe 5.0 and ATX 3.0 compatibility, ensuring optimal power delivery and efficiency. Fully modular for easy cable management, it's a reliable choice for high-performance PC builds
Awd-it.co.uk
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£134.95
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Seasonic Seasonic Focus GX-850 ATX 3.1 850W 80 Gold Modular Power Supply FOCUS-GX-850-V4

Following the well-established legacy of the Seasonic FOCUS Series, the FOCUS GX Series has been upgraded to comply with the ... moreATX 3.1 and PCIe 5.1 standards. It offers a complete range of power supplies from 750W to 1000W, all within a compact 140mm depth. Each unit features a 135mm fan, a 12V-2×6 cable, and our new OptiSink technology. These units are designed to be perfect allies in powering the latest high-power graphics cards and processors available on the market. FOCUS GX ATX 3 at a Glance 80 PLUS Gold Efficiency: Offers high energy efficiency, reducing power consumption and heat. Fully Modular Design: Allows for flexible cable management. Compact Size: Fits comfortably in smaller cases. Premium Hybrid Fan Control: Ensures optimal cooling with a silent mode. ATX 3.1 and PCIe 5.1 Ready: Supports modern GPUs and components. 10-Year Warranty: Provides long-term peace of mind FOCUS GX ATX 3 Specification 80PLUS® Gold Cybenetics Efficiency Level Gold Cybenetics Noise Level Standard++ Form Factor ATX/EPS Fan Size 135 mm Fan Control Digital Hybrid Fan Control Fan Bearing Fluid Dynamic Bearing Fan Life Expectancy 50,000 hours at 40°C, 15% - 65% RH Modularity Fully Modular Cable Type Individual Black Cables with Braided Pattern Operating Temperature 0 - 50 °C MTBF @ 25 °C, excl. fan 100,000 hours AC Input Full Range Protection OCP, OPP, OTP, OVP, SCP, UVP Safety and EMC CB, CCC, CE, cTUVus, EAC, TUV, BSMI, FCC Environmental Compliance Energy Star, ErP Lot 6, REACH, RoHS, WEEE Warranty 10 Years
Overclockers.co.uk
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£139.99
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4 more offer(s)
Series Seasonic FOCUSCompare using chart →
Seasonic FOCUS GX GX-850
from £140.88 
850 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 10, Molex 5, ATX, modular, Efficiency 90 %, semi-passive СО, mining, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GM GM-750
from £80.65 
750 W, 24+8 (4+4) pin, 4 х 6+2 pin, SATA 8, Molex 3, ATX, semi-modular, Efficiency 87 %, semi-passive СО, certificate 80+ Gold, warranty 7 years
Seasonic FOCUS GX ATX 3.0 GX-750 3.0
from £109.99 
750 W, 24+8+8(4+4) pin, 2 х 6+2 pin, 1 x 16 pin, SATA 10, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GX GX-650
from £114.99 
650 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GX ATX 3.0 GX-850 3.0
from £129.98 
850 W, 24+8+8(4+4) pin, 3 х 6+2 pin, 1 x 16 pin, SATA 10, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GX ATX 3.0 GX-1000 3.0
from £160.99 
1000 W, 24+8+8(4+4) pin, 3 х 6+2 pin, 1 x 16 pin, SATA 10, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GM GM-650
from £79.99 
650 W, 24+8 (4+4) pin, 4 х 6+2 pin, SATA 6, Molex 3, ATX, semi-modular, Efficiency 87 %, semi-passive СО, certificate 80+ Gold, warranty 7 years
Seasonic FOCUS PX PX-750
from £198.01 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Platinum, warranty 10 years
Seasonic FOCUS SGX SGX-650
from £166.68 
650 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 6, Molex 3, SFX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GM GM-850
from £99.98 
850 W, 24+8 (4+4) pin, 6 х 6+2 pin, SATA 8, Molex 3, ATX, semi-modular, Efficiency 87 %, semi-passive СО, mining, certificate 80+ Gold, warranty 7 years
Seasonic FOCUS PX PX-650
from £183.57 
650 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 92 %, semi-passive СО, certificate 80+ Platinum, warranty 10 years
Seasonic FOCUS PX PX-850
from £238.54 
850 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 10, Molex 5, ATX, modular, Efficiency 92 %, semi-passive СО, mining, certificate 80+ Platinum, warranty 10 years
Seasonic FOCUS GX GX-1000
from £244.40 
1000 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 10, Molex 5, ATX, modular, Efficiency 92 %, semi-passive СО, mining, certificate 80+ Gold, warranty 10 years

Seasonic FOCUS GX ATX 3.0 configurations

Price for Seasonic FOCUS GX ATX 3.0
Seasonic FOCUS GX ATX 3.0 FOCUS GX-750 ATX 3.0from £109.997 offers
Seasonic FOCUS GX ATX 3.0 FOCUS GX-850 ATX 3.0from £129.989 offers
Seasonic FOCUS GX ATX 3.0 FOCUS GX-1000 ATX 3.0from £160.993 offers
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MSI MAG PCIE5 A850GL White
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Lian Li Edge EG1000
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Seasonic PRIME GX GX-850
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MSI MPG PCIE5 A850G PCIE5
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Cooler Master GX III MPX-8503-AFAG
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850 W, 24+8+8(4+4) pin, 3 х 6+2 pin, 1 x 16 pin, SATA 8, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
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PSU Seasonic FOCUS GX-850 ATX 3.0
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