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Seasonic Vertex GX-1000-1000W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible
Seasonic

Seasonic Vertex GX-1000-1000W

Bottom line: The Seasonic Vertex GX-1000-1000W ($324.00 on Amazon as of 2026-10-06): 1000W ATX 3.0 / PCIe 5.0 rated with native 12VHPWR cable for RTX 40/50 GPUs; main trade-off: 80+ Gold, not Platinum or Titanium, at a price where those exist.

$324.00

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Buy on Amazon — $324.00 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 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 1000W ATX 3.0 / PCIe 5.0 rated with native 12VHPWR cable for RTX 40/50 GPUs
  • ✓ Fully modular cabling plus cable-free internal connection design
  • ✓ 135mm fluid dynamic bearing fan with hybrid fanless, silent, and cooling modes
  • ✓ Tight +-3% voltage regulation on the 12V, 5V, and 3.3V rails
  • ✓ Japanese 105C aluminum electrolytic capacitors behind a 12-year warranty

Cons

  • ✗ 80+ Gold, not Platinum or Titanium, at a price where those exist
  • ✗ 1000W is more headroom than a single mid-range GPU build needs
  • ✗ Listing and box warranty terms differ (12 years vs 10 years) - verify before buying
  • ✗ Fluid dynamic bearing fan still spins up under sustained heavy load

Manufacturer description

Seasonic VERTEX GX-1000, 1000W 80+ Gold, ATX 3.0 / PCIe 5.0 Compliant, Full Modular, Fan Control in Fanless, Silent, and Cooling Mode, 10 Years Warranty. *High Efficiency, 80 PLUS® Gold Certified *ATX 3.0 and 16-Pin Gen 5 PCIe Cable (12VHPWR) *Fully Modular Cabling Design *135 mm Fluid Dynamic Bearing (FDB) Fan *Seasonic Hybrid Silent Fan Control *Highly Reliable Japanese 105 °C Aluminum Electrolytic Capacitors *Tight Voltage Regulation (12 V, 5 V and 3.3 V) [± 3 %] *Ample +12 V Output *DC to DC Converter Design *Cable-free Connection Design *Gold-Plated High Current Terminals (MB, CPU and…

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SpecPicks Verdict

SpecPicks scored Seasonic Vertex GX-1000-1000W 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

  • Fully compatible with ATX 3.0 and PCIe 5.0 standards
  • Full modularity for the best cable management options
  • Added 12VHPWR cable to comply with the new graphic cards
  • 135mm Fluid Dynamic Bearing (FDB) fan for quiet operation
  • Seasonic Hybrid Silent Fan Control for optimal cooling

Full Specifications

BrandSeasonic
Wattage1000 watts
Fan Size13.5 centimeters
Model NameVERTEX GX-1000
Unit Count1 Count
Form FactorATX
Model NumberVERTEX GX-1000
Connector Typeatx,pcie
Cooling MethodAir
Number of Fans1
Output Wattage1000
Item Dimensions4.53 x 2.69 x 1.59 inches
Mfr Part NumberVertex GX-1000
Number of Items1
Number of Packs1
Compatible DevicesPersonal Computer
Power Supply DesignFull Modular
Warranty Description10 years
Maximum Input Voltage120 volts
Minimum Input Voltage90 volts
Full listing titleSeasonic Vertex GX-1000-1000W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible

Ready to buy?

Seasonic Vertex GX-1000-1000W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 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.

Buy on Amazon — $324.00

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Seasonic Vertex GX-1000-1000W - 80+ Gold - ATX 3.0 & PCIe 5.0 Ready - Fully Modular - Premium Japanese Capacitors - 12 Year Warranty - Nvidia RTX 40/50 & AMD GPU Compatible
$324.00
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