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Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus & Cybenetics Gold Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Premium Japanese Capacitors 10 Years Warranty
Seasonic

Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready White

Bottom line: The Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready ($180.90 on Amazon as of 2026-10-20 20:20 UTC): Native 12V-2x6 connector, ATX 3.1/PCIe 5.1 ready for RTX 5090 and RX 9000; main trade-off: gold efficiency, not Platinum or Titanium, at a price near some Platinum units. Another in-stock pick with the same 1000W 80 Plus Gold fully modular ATX power supply: the Corsair RMX Series, $234.99 on Amazon as of (price may vary).

$180.90

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Buy on Amazon — $180.90 Also on eBay → Compare to similar power supplies

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Native 12V-2x6 connector, ATX 3.1/PCIe 5.1 ready for RTX 5090 and RX 9000
  • ✓ 1000W headroom covers a 5090 build plus overclocked CPU without a PSU swap
  • ✓ 10-year warranty outlasts two or three GPU upgrade cycles
  • ✓ Cybenetics Gold plus 80 PLUS Gold dual certification, not just 80 PLUS alone
  • ✓ Hybrid fan mode keeps the 135 mm FDB fan silent at low loads

Cons

  • ✗ Gold efficiency, not Platinum or Titanium, at a price near some Platinum units
  • ✗ White finish limits build matching if your case and cables are black
  • ✗ 1000W is overkill for mid-range GPUs, so you pay for unused capacity
  • ✗ Fully modular cable set adds bulk that small form factor cases struggle to route

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SpecPicks Verdict

SpecPicks scored Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready… 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

  • ATX 3.1 / PCIE 5.1 ready. Native 12V-2x6 connector
  • 80 PLUS and Cybenetics Gold certified
  • OptiSink Design
  • NVIDIA RTX 5090 AMD RX 9000 ready
  • Hybrid fan control with 135 mm FDB fan

Full Specifications

BrandSeasonic
Wattage1000 watts
Model NameFocus GX-1000 White ATX 3.1
Unit Count1 Count
Form FactorATX
Model NumberFocus GX-1000 White ATX 3.1
Connector TypeATX
Cooling MethodAir
Number of Fans1
Output Wattage1000
Item Dimensions5.5 x 5.9 x 3.4 inches
Mfr Part NumberFocus GX-1000 White ATX 3.1
Number of Items1
Number of Packs1
Compatible DevicesDesktop Computer, Gaming PC
Warranty Description10 Years
Maximum Input Voltage264 volts_of_alternating_current
Minimum Input Voltage90 volts_of_alternating_current
Item dimensions L x W x H5.5 x 5.9 x 3.4 inches
System Bus Connector TypeATX
Full listing titleSeasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus & Cybenetics Gold Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Premium Japanese Capacitors 10 Years Warranty

Ready to buy?

Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus & Cybenetics Gold Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Premium 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.

Buy on Amazon — $180.90

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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Seasonic Focus GX-1000 1000W Power Supply ATX 3.1 & PCIe 5.1 Ready White | 80 Plus & Cybenetics Gold Fully Modular 12V-2x6 RTX 5090 AMD RX 9000 Ready Premium Japanese Capacitors 10 Years Warranty
$180.90
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