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Rectangular ATX power supply, matte black finish, 140 mm deep, 120 mm fan grille, full modular cable sockets visible

Seasonic

Seasonic FOCUS GX-1000 1000W 80+ Gold ATX power supply

SKU CH-KTXX-8QP0P MPN FOCUS GX-1000

A 1000 W fully modular ATX power supply with 80 PLUS Gold efficiency, a 120 mm fluid dynamic bearing fan and a compact 140 mm depth for broad case compatibility

  • Max wattage1000 W
  • Modular cablingFull Modular
  • Fan configuration120 mm Fluid Dynamic Bearing fan
  • Main power connector20+4Pin
  • 12V railsSingle
  • PCIe power connectors6 × 6+2-Pin

Model ATX Gold (1000W)

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  • 1000 W output powers demanding builds with a single +12 V rail at 83 A
  • 80 PLUS Gold certification reduces wasted energy during power conversion
  • Full-modular cabling lets you connect only what you need for cleaner airflow
  • 140 mm depth fits every ATX case while leaving room for cable routing
  • Hybrid fan control offers a fanless mode for silent operation at low loads

Compact 140 mm Depth

The Seasonic FOCUS GX-1000 is a fully modular ATX power supply rated at 1000 W with 80 PLUS Gold certification. It uses a single +12 V rail delivering up to 83 A and includes premium Japanese capacitors for stable output. A 120 mm Fluid Dynamic Bearing fan provides cooling in a chassis only 140 mm deep.

Full Modular Upgrade

This unit replaces fixed-cable power supplies that restrict airflow and complicate cable routing. The jump is worthwhile when building or upgrading a system that needs six PCIe 6+2-pin connectors and ten SATA power connectors for multiple drives or GPUs. Hybrid fan control lets you choose between S2FC and S3FC modes for customised cooling behaviour.

High-Wattage Multi-GPU Builds

It suits enthusiasts assembling high-wattage systems with multiple graphics cards or dense storage arrays who value a compact footprint and a ten-year warranty. Builders needing only modest power or fewer connectors should consider lower-capacity models instead.

How it compares

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

Price $125.99
Cheaper than about 57% 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
Product lineFOCUS GX
Model nameFOCUS GX-1000 (SSR-1000FX)
Product typeIntel ATX 12 V
Ports & slots
PCIe power connectors6 × 6+2-Pin
SATA power connectors10
Output type+3.3 V@25A, +5 V@25A, +12 V@83A, +5VSB@3A
Connection types1 x Main Power (24/20 pins)
2 x CPU (8/4 pins)
6 x PCIe (8/6 pins)
10 x SATA
5 x Peripheral
1 x Floppy
Power
Max wattage1000 W
Modular cablingFull Modular
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current13–6.5 A
Size & build
Product dimensions5.51 in × 5.91 in × 3.39 in
Product weight6.8 lb (3.08 kg)
Shipping weight3.11 kg
Package size318 × 193 × 124 mm
Compatibility
PSU length limit140 mm
Environment & compliance
Regulatory approvalscTUVus, TUV, CB, CCC, BSMI, EAC, CE
More details
Fan configuration120 mm Fluid Dynamic Bearing fan
Mean time between failures100,000 h

Other versions of this model

5 more in the same range

Questions about this item

How deep is the 1000 W unit and will it fit my ATX case?

The chassis measures 140 mm deep, which matches the standard ATX form factor and fits all ATX cases.

Which cables must be connected first during a full-modular build?

Attach the 20+4 pin main cable and the required 6+2 pin PCIe cables to the PSU before routing them to the motherboard and graphics card.

How long is the fan rated to run before it may need replacement?

The 120 mm fluid dynamic bearing fan carries a 100000 hour MTBF rating, indicating a very long service life.

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