Seasonic
Seasonic Focus GX-850-850W
Bottom line: The Seasonic Focus GX-850-850W is a specs-and-price decision rather than a crowd-consensus one in the power supplies category, priced around $175.93 on Amazon as of 2026-10-06. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ High Efficiency, 80 PLUS Gold Certified
- ✓ Backed by Seasonic's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored Seasonic Focus GX-850-850W 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.
Key Features
- High Efficiency, 80 PLUS Gold Certified
- ATX 3 and 16-Pin PCIe Gen 5 Cable (12V-2x6)
- OptiSink Design
- Fully Modular Cabling Design
- Compact Size (140 mm)
- 135 mm Fluid Dynamic Bearing (FDB) Fan
Full Specifications
| Brand | Seasonic |
|---|---|
| Wattage | 850 watts |
| Model Name | Focus V4 GX-850 |
| Form Factor | ATX |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 850 watts |
| Item Dimensions | 5.5 x 5.9 x 3.4 inches |
| Number of Items | 1 |
| Compatible Devices | desktop |
| Power Supply Design | Full Modular |
| Warranty Description | 10 YEARS |
| Maximum Input Voltage | 120 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 |
| EU Spare Part Availability Duration | 10 years |
| Full listing title | Seasonic Focus GX-850-850W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 10 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible |
Ready to buy?
Seasonic Focus GX-850-850W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 10 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible 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 2026-10-06. Price and availability subject to change.
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