Seasonic Focus GX ATX 3 850W 80+ Gold Fully Modular Power Supply - White, Focus GX-850 V4 White (2024) Power Supply Units (PSU)
Focus GX ATX 3 Series Following the well-established legacy of the Seasonic FOCUS Series, the FOCUS GX Series has been upgraded to comply with the ATX 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. Digital Hybrid Fan Control Operating in Fanless, Silent, and Cooling modes, this power supply intelligently shifts to deliver the right amount of power to your components when needed. At a whisper-quiet 20 dB, it suppresses noise levels without any rise in temperature, simultaneously extending its lifespan by monitoring unnecessary rotations. Ice Cold with Improved OptiSink Seasonic have flipped their PCB layout, improved their surface mount technology and included a smaller MOSFET, meaning the space within is increased to allow for a larger heatsink and more generous airflow space. This means cooling is better than it ever has been, and reliability is extended. Moreover, it allows for more eco-friendly manufacturing, requiring less materials and production.
Focus GX ATX 3 Series Following the well-established legacy of the Seasonic FOCUS Series, the FOCUS GX Series has been upgraded to comply with the ATX 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. Digital Hybrid Fan Control Operating in Fanless, Silent, and Cooling modes, this power supply intelligently shifts to deliver the right amount of power to your components when needed. At a whisper-quiet 20 dB, it suppresses noise levels without any rise in temperature, simultaneously extending its lifespan by monitoring unnecessary rotations. Ice Cold with Improved OptiSink Seasonic have flipped their PCB layout, improved their surface mount technology and included a smaller MOSFET, meaning the space within is increased to allow for a larger heatsink and more generous airflow space. This means cooling is better than it ever has been, and reliability is extended. Moreover, it allows for more eco-friendly manufacturing, requiring less materials and production.
Focus GX ATX 3 Series Following the well-established legacy of the Seasonic FOCUS Series, the FOCUS GX Series has been upgraded to comply with the ATX 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. Digital Hybrid Fan Control Operating in Fanless, Silent, and Cooling modes, this power supply intelligently shifts to deliver the right amount of power to your components when needed. At a whisper-quiet 20 dB, it suppresses noise levels without any rise in temperature, simultaneously extending its lifespan by monitoring unnecessary rotations. Ice Cold with Improved OptiSink Seasonic have flipped their PCB layout, improved their surface mount technology and included a smaller MOSFET, meaning the space within is increased to allow for a larger heatsink and more generous airflow space. This means cooling is better than it ever has been, and reliability is extended. Moreover, it allows for more eco-friendly manufacturing, requiring less materials and production.
Focus GX ATX 3 Series Following the well-established legacy of the Seasonic FOCUS Series, the FOCUS GX Series has been upgraded to comply with the ATX 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. Digital Hybrid Fan Control Operating in Fanless, Silent, and Cooling modes, this power supply intelligently shifts to deliver the right amount of power to your components when needed. At a whisper-quiet 20 dB, it suppresses noise levels without any rise in temperature, simultaneously extending its lifespan by monitoring unnecessary rotations. Ice Cold with Improved OptiSink Seasonic have flipped their PCB layout, improved their surface mount technology and included a smaller MOSFET, meaning the space within is increased to allow for a larger heatsink and more generous airflow space. This means cooling is better than it ever has been, and reliability is extended. Moreover, it allows for more eco-friendly manufacturing, requiring less materials and production.
in 13 offers
The lowest price for Seasonic Focus GX ATX 3 850W 80+ Gold Fully Modular Power Supply - White, Focus GX-850 V4 White (2024) Power Supply Units (PSU) right now is $247.14 at PB Tech, compared across 10 retailers.
The all-time low was $210.95 on 29 Sept 2026 — today's price is 17% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 2 Nov 2026.
Last updated at 02/11/2026 23:08:52
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe 5.1 support, Full modular, 10 Years Warranty
Delivery between 7–12 Nov $9
Seasonic 850W Focus GX-850 Gold PSU (SSR-850FX) PSUSEAFOCUSGX850
Delivery between 5–11 Nov $11.95
[PSUSEAFOCUSGXWHITE850V4] Seasonic 850W Focus GX-850 V4 WHITE Fully-Modular 80 PLUS Gold ATX3.1/PCIe 5.1 PSU
7-day returns
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe 5.1 support, Full modular, 10 Years Warranty [SRP-FGX851-A5A32SF White]
Free delivery between Wed – Thu
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe
Delivery $10
Seasonic 850W Focus GX-850 V4 WHITE Fully-Modular 80 PLUS Gold ATX3.1/PCIe 5.1 PSU
Free delivery
Napajanje 850W SEASONIC Focus GX-850 White, ATX, 135mm vent., 80+ Gold, modularno
Seasonic 850W Focus GX-850 V4 WHITE Fully-Modular 80 PLUS Gold ATX3.1/PCIe 5.1 PSU
Delivery between 5–13 Nov $10
Seasonic 850W Focus GX-850 V4 WHITE Fully-Modular 80 PLUS Gold ATX3.1/PCIe 5.1 PSU
Delivery between 6–11 Nov $59
Seasonic 850w Focus Gx-850 V4 White Fully-modular 80 Plus Gold
Free delivery
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| Manufacturer Warranty | 10 Years Limited Warranty |
| Modularity | Fully-Modular |
| Form Factor | ATX |
| Wattage | 850W |
| Length | <140mm |
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe 5.1 support, Full modular, 10 Years Warranty
Delivery between 7–12 Nov $9
Seasonic 850W Focus GX-850 Gold PSU (SSR-850FX) PSUSEAFOCUSGX850
Delivery between 5–11 Nov $11.95
[PSUSEAFOCUSGXWHITE850V4] Seasonic 850W Focus GX-850 V4 WHITE Fully-Modular 80 PLUS Gold ATX3.1/PCIe 5.1 PSU
7-day returns
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe 5.1 support, Full modular, 10 Years Warranty [SRP-FGX851-A5A32SF White]
Free delivery between Wed – Thu
Seasonic Focus GX-850 V4 ATX 3.1 850W 80 Plus Gold White ATX Power Supply PCIe
Delivery $10
| Manufacturer Warranty | 10 Years Limited Warranty |
| Modularity | Fully-Modular |
| Form Factor | ATX |
| Wattage | 850W |
| Length | <140mm |
