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Rectangular black ATX power supply with 135 mm fan and modular cable sockets

Seasonic

Seasonic VERTEX1000G 1000W ATX 3.0 power supply

SKU CH-G02F-3F3BB MPN VERTEX1000G

A 1000 W ATX 3.0 power supply with a 16-pin Gen 5 PCIe cable, full-modular cabling and a 135 mm FDB fan rated Cybenetics A for noise

  • Max wattage1000 W
  • Modular cablingFull Modular
  • Fan configuration135 mm Fluid Dynamic Bearing (FDB) Fan
  • PCIe power connectorsATX 3.0 and 16-Pin Gen 5 PCIe Cable (12VHPWR)
  • PSU length limit160 mm
  • Efficiency certification80 PLUS GOLD Certified

Model ATX 3.0 Gold (1000W)

  • 80 PLUS Gold certification delivers high-efficiency power conversion
  • ATX 3.0 and 12VHPWR cable support modern GPU connectivity
  • Fully modular cabling reduces clutter and simplifies builds
  • 135 mm FDB fan with hybrid silent control keeps noise low
  • Japanese 105 °C capacitors ensure long-term reliability

Power for modern GPUs

The Seasonic VERTEX GX-1000 is a 1000 W ATX 3.0 power supply built for systems that need stable delivery to current graphics cards. Its fully modular cable set keeps the interior tidy and simplifies routing in standard cases. The unit targets builders who want a single, quiet source for a high-end GPU and CPU combination.

12VHPWR connector included

A native 16-pin Gen 5 PCIe cable (12VHPWR) ships in the box, removing the need for adapters when installing compatible graphics cards. The PSU meets ATX 3.0 timing and power-excursion requirements, so transient spikes are handled within spec. 80 PLUS Gold certification and Cybenetics A noise rating confirm efficient, low-noise operation under load.

Fits standard ATX layouts

At 160 mm long the unit sits in most mid-tower and larger chassis without blocking drive bays or radiator mounts. The 135 mm fluid-dynamic-bearing fan runs under hybrid silent control, staying idle at low loads and ramping only when needed. Japanese 105 °C capacitors and tight ±3 % voltage regulation on the 12 V, 5 V and 3.3 V rails support long-term reliability.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $169.99
Pricier than about 56% of the 10,869 comparable items (median $142.99).
Max wattage 1000 W
Higher than about 70% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameSeaSonic
Model nameVertex GX-1000
Product typeATX / ATX 3.0 Compatible
Ports & slots
PCIe power connectorsATX 3.0 and 16-Pin Gen 5 PCIe Cable (12VHPWR)
Output typeAmple +12 V Output
Power
Max wattage1000 W
Modular cablingFull Modular
Efficiency certification80 PLUS GOLD Certified
Size & build
Product dimensions6.3 in L × 5.9 in W × 3.4 in H
Product weight4.34 lb (1.97 kg)
Shipping weight3.51 kg
Package size345 × 185 × 114 mm
Compatibility
PSU length limit160 mm
Environment & compliance
PSU noise ratingCybenetics A
More details
Fan configuration135 mm Fluid Dynamic Bearing (FDB) Fan

Other versions of this model

4 more in the same range

Questions about this item

How much power does the 1000 W rating actually deliver to components in a real build?

The unit can supply its full 1000 W continuously to system components, with the +12 V rail providing the vast majority of that power for modern CPUs and GPUs.

What does the ATX 3.0 and 12VHPWR connection mean for GPU compatibility?

The native 12VHPWR cable supports the ATX 3.0 power-excursion requirements of current-generation graphics cards without adapters.

Will the 160 mm length and 135 mm fan fit in a standard mid-tower case?

At 160 mm long it matches the typical ATX power-supply clearance of most mid-tower chassis, and the 135 mm fluid-dynamic-bearing fan sits within the standard mounting footprint.

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