

⚡ Power your future with confidence — Seasonic Focus GX 850W, where performance meets longevity!
The Seasonic Focus GX 850W is a fully modular ATX 3.1 power supply designed for modern high-performance PCs. It delivers 850 watts of stable power, supports PCIe 5.1 with native 12V-2x6 connectors, and is certified 80 PLUS Gold and Cybenetics Platinum for top-tier efficiency and quiet operation. Ready for the latest GPUs like NVIDIA RTX 5080 and AMD RX 9000, it features a hybrid fan control with a 135mm fluid dynamic bearing fan and comes backed by a 10-year manufacturer warranty, ensuring durability and future-proof reliability.




| ASIN | B0DLFMTX12 |
| Best Sellers Rank | #16 in Computer Power Supplies |
| Brand | Seasonic |
| Compatible Devices | Desktop |
| Connector Quantity | 4 |
| Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Cooling Method | Air |
| Customer Reviews | 4.7 out of 5 stars 279 Reviews |
| EU Spare Part Availability Duration | 10 Years |
| Form Factor | ATX |
| Item Dimensions | 5.5 x 5.9 x 3.4 inches |
| Item Weight | 3.48 Pounds |
| Manufacturer | Seasonic |
| Maximum Input Voltage | 132 Volts (AC) |
| Minimum Input Voltage | 118.8 Volts (AC) |
| Model Name | Focus GX-850 ATX 3.1 |
| Number of Fans | 1 |
| Output Wattage | 850 Watts |
| Power Supply Design | Full Modular |
| System Bus Connector Type | ATX |
| UPC | 882016002755 |
| Warranty Description | 10 Year Manufacturer |
| Wattage | 850 watts |
N**X
Reliable Performance
I’ve been using the Seasonic Focus GX-850 for about a month now and it’s been working great. I’m running it with an RTX 5080 Founders Edition, and I’ve had no issues at all so far. Installation was easy thanks to the fully modular cables, and it runs quiet and stable, even under load. It’s ATX 3.0 / PCIe 5.0 ready, so it feels like a good fit for newer GPUs. Overall, it’s been reliable and does exactly what it’s supposed to do. I’d definitely recommend it if you’re building a modern PC and want a solid power supply.
M**A
Awesome Power Supply
It really like that this power supply came with braided cables which made it easier for cable management. One of the small gripes I had with my old Seasonic Focus is that the cables were stiff but I really like that these are flexible. You can't go wrong with Seasonic, my old Seasonic is still working awesome with no issues, I had to replace it because I bought a new graphics card so I wanted to future proof my pc and not worry about meeting the minimum power requirements in the future. I have my old Seasonic for about 6 years and never had issues with it, I like that they are reliable and don't have to worry about them giving out on me while I game. The power supply was easy to install and it is really quiet, even under load. It came with all the cables I needed plus more. I definitely recommend if you are looking for a really good power supply, they are built really well and will last you a long time.
M**S
Seasonic PSU's are the best
Seasonic has only been in the desktop PSU market for a few years. Before that, they were well known for their quality server PSU's, and I'd used them almost exclusively for custom-built servers (typically rackmount). When they started offering desktop power supplies, I immediately started buying them for all custom PC builds and PSU replacements. As expected, the quality is on par with their server offerings. A few years and a few dozen units later, not a single one has failed, or even developed a noisy fan. I'm finished with other brands starting with T (junk) or C (good but not great). I'm more than happy with these latest units - they come very well outfitted and packaged; include a great assortment of high quality modular cables and a useful carry bag for them.
J**Z
Amazing power supply
Installed this in an NZXT dual chamber case and it was perfect. The cables were easy to manage, the installation was a breeze, and the hybrid mode makes it nice and quiet unless it has to turn on the fan. The 12VHPWR connector also seated snug into the 5070 I used, so I have no doubt it won't have melting issues.
F**E
Psu can be loud but thank god it has a button to switch from quiet to loud operations.
Psu is perfect and it fits in my case too, psu fans can get loud but press the button on the psu for quite operation and it can be quiet with a humming sound which isn’t very noticeable when gaming. The psu feels high quality and nice to the touch definitely worth getting.
D**O
The best power supply quality/price
The cable management is excellent thanks to its modular design, allowing me to use only the necessary cables. It has been very reliable with no failures, runs cool, and is a great choice for future upgrades, especially when I upgrade my graphics card.
B**D
So much power
Not much to say about Seasonic. They have quality products. I had a 750w and upgraded to this. Its a beast for power. The connectors are easy to manage and the cables have some type of coating on them that make them easy to manipulate and feel really durable.
H**2
It works. No issues
Great power supply. I've never had a Seasonic PS fail.
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