Seasonic
Seasonic Focus GX-850 850W Power Supply ATX 3.1 & PCIe 5.1 Ready White
Bottom line: The Seasonic Focus GX-850 850W Power Supply ATX 3.1 & PCIe 5.1 Ready White ($170.00 on Amazon as of 2026-10-27 10:15 UTC): Native 12V-2x6 connector powers RTX 5080 and RX 9000 cards without adapters; main trade-off: listing names RTX 5080 readiness, not flagship-tier GPUs like the RTX 5090. Another in-stock pick with the same 850W 80 Plus Gold fully modular ATX power supply: the Seasonic Focus GX-850W 850W Power Supply, $159.99 on Amazon as of (price may vary).
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*Price sourced from Amazon.com. Last updated 2026-10-27. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Native 12V-2x6 connector powers RTX 5080 and RX 9000 cards without adapters
- ✓ ATX 3.1 and PCIe 5.1 compliant for current-generation GPUs
- ✓ Dual efficiency certification: 80 PLUS Gold and Cybenetics Platinum
- ✓ Fully modular cabling keeps unused leads out of the case
- ✓ 10-year warranty, Japanese capacitors and a 135 mm FDB hybrid fan
Cons
- ✗ Listing names RTX 5080 readiness, not flagship-tier GPUs like the RTX 5090
- ✗ Gold/Platinum rated, a step below Titanium-class efficiency
- ✗ White finish clashes in black builds and shows dust more readily
- ✗ Unit dimensions are not listed, so check case PSU clearance first
Manufacturer description
The Seasonic Focus GX-850 White is an 850W fully modular ATX power supply built for current-generation graphics cards. It is ATX 3.1 and PCIe 5.1 ready, with a native 12V-2x6 connector, so you can power an NVIDIA RTX 5080 or an AMD RX 9000 series card without adapter dongles. Its efficiency is certified twice: 80 PLUS Gold and Cybenetics Platinum. Less wasted power means less heat inside your case. Cooling comes from a 135 mm fluid dynamic bearing (FDB) fan with hybrid fan control, and Seasonic's OptiSink design manages internal heat dissipation. Japanese capacitors handle filtering, and…
SpecPicks Verdict
SpecPicks scored Seasonic Focus GX-850 850W Power Supply ATX 3.1 & PCIe 5.1 Ready White using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Seasonic's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Does the Seasonic Focus GX-850 have a native 12V-2x6 cable for RTX 50 series cards?
Yes. It has a native 12V-2x6 connector and is ATX 3.1 and PCIe 5.1 ready, so it can power cards like the RTX 5080 directly without an adapter.
Is 850W enough for an RTX 5080 or AMD RX 9000 build?
Seasonic lists the Focus GX-850 as RTX 5080 and AMD RX 9000 ready. For your exact CPU and GPU combination, check the graphics card maker's recommended PSU wattage.
Is the Seasonic Focus GX-850 White fully modular?
Yes. Every cable is detachable, so you install only the leads your build needs. This makes cable routing cleaner and improves airflow.
What efficiency rating does the Focus GX-850 have?
It is certified 80 PLUS Gold and Cybenetics Platinum. Cybenetics is a separate testing standard that also measures efficiency across the unit's load range.
How long is the warranty and what fan does it use?
Seasonic covers the unit with a 10-year warranty. It uses a 135 mm fluid dynamic bearing fan with hybrid fan control, plus Japanese capacitors. Check the product listing for full warranty terms.
Key Features
- ATX 3.1 / PCIE 5.1 ready. Native 12V-2x6 connector
- 80 PLUS Gold and Cybenetics Platinum certified
- OptiSink Design
- NVIDIA RTX 5080 AMD RX 9000 ready
- Hybrid fan control with 135 mm FDB fan
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 850 watts |
| Model Name | Focus GX-850 White ATX 3.1 |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Model Number | Focus GX-850 White ATX 3.1 |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 850 |
| Item Dimensions | 5.5 x 5.9 x 3.4 inches |
| Mfr Part Number | Focus GX-850 White ATX 3.1 |
| Number of Items | 1 |
| Compatible Devices | Desktop Computer, Gaming PC |
| Warranty Description | 10 Years |
| Maximum Input Voltage | 240 volts_of_alternating_current |
| Minimum Input Voltage | 90 volts_of_alternating_current |
| Item dimensions L x W x H | 5.5 x 5.9 x 3.4 inches |
| System Bus Connector Type | ATX |
| Connector Type Used on Cable | ATX |
| Full listing title | Seasonic Focus GX-850 850W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus Gold & Cybenetics Platinum Fully Modular 12V-2x6 RTX 5080 AMD RX 9000 Ready Japanese Capacitors 10 Years Warranty |
Hardware benchmark data
Ready to buy?
Seasonic Focus GX-850 850W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus Gold & Cybenetics Platinum Fully Modular 12V-2x6 RTX 5080 AMD RX 9000 Ready Japanese Capacitors 10 Years Warranty is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-27. Price and availability subject to change.
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