Seasonic FOCUS GX-1000 ATX 3.1 1000W 80 Plus Gold PSU

Premium 1000W Power for High-End Gaming and Professional Workstations

The Seasonic FOCUS GX-1000 ATX 3.1 is a high-performance power supply engineered for enthusiasts, gamers, creators and professionals who demand exceptional reliability and next-generation compatibility. Delivering 1000W of continuous power, full ATX 3.1 and PCIe 5.1 compliance, and backed by Seasonic's renowned engineering expertise, this PSU is built to power today's most demanding hardware and tomorrow's upgrades.

Featuring 80 Plus Gold certification, a fully modular design, advanced Hybrid Silent Fan Control, premium Fluid Dynamic Bearing fan technology, and comprehensive electrical protections, the FOCUS GX-1000 provides the stability and efficiency required for flagship gaming systems and professional workstations.

Key Features & Benefits

Massive 1000W Continuous Power Output

Built for powerful systems, the FOCUS GX-1000 delivers a full 1000W of continuous power for demanding workloads and high-end components.

Ideal for:

• RTX 5090 & RTX 5080 Gaming PCs
• RTX 4090 & RTX 4080 Systems
• High-End AMD Ryzen Builds
• Intel Core i9 Workstations
• Content Creation PCs
• AI and Rendering Workstations
• Multi-Drive Storage Systems

The powerful single +12V rail delivers up to 996W, ensuring stable performance under heavy loads.

ATX 3.1 and PCIe 5.1 Ready

Designed around the latest PSU standards, the FOCUS GX-1000 supports modern graphics cards and demanding transient power loads.

Features include:

• ATX 3.1 Compliance
• PCIe 5.1 Compatibility
• Improved Power Excursion Handling
• Future-Ready GPU Support
• Enhanced System Stability

Perfect for current and next-generation hardware platforms.

80 Plus Gold Certified Efficiency

The FOCUS GX-1000 achieves 80 Plus Gold efficiency, maximising power conversion while minimising energy waste.

Benefits include:

• Lower electricity consumption
• Reduced heat generation
• Improved efficiency
• Enhanced system stability
• Lower operating costs

Ideal for systems that operate for extended periods under heavy workloads.

Fully Modular Cable Management

Use only the cables required for your build.

Advantages include:

• Cleaner installation
• Improved airflow
• Reduced cable clutter
• Easier maintenance
• Simplified upgrades

A fully modular design is especially beneficial in premium gaming and workstation builds.

Premium Braided Black Cable Design

The FOCUS GX-1000 includes individually sleeved black cables with a braided appearance for professional cable management and a clean system aesthetic.

Perfect for:

• Gaming PCs
• Showcase Builds
• Workstations
• Tempered Glass Cases
• Minimalist System Designs

Hybrid Silent Fan Control

Seasonic's patented Hybrid Silent Fan Control technology intelligently balances cooling and silence.

The system operates through three stages:

Fanless Mode

The fan remains off during low loads for completely silent operation.

Silent Mode

The fan spins slowly during moderate workloads, minimising noise output.

Cooling Mode

The fan increases speed when required to maintain optimal operating temperatures.

This intelligent design creates an excellent balance between performance and acoustics.

Premium Fluid Dynamic Bearing Fan

The high-quality fan utilises Fluid Dynamic Bearing (FDB) technology for improved longevity and quieter operation.

FDB Benefits:

• Reduced friction
• Lower vibration
• Less noise
• Enhanced cooling performance
• Increased durability

The fan is rated for up to 50,000 hours of operation.

Trusted Seasonic Reliability

The FOCUS series has earned a strong reputation among PC enthusiasts worldwide thanks to its proven reliability and performance.

Key reliability features include:

• High Quality Internal Components
• Stable Voltage Regulation
• Long Operational Lifespan
• Rigorous Testing Standards
• Premium Manufacturing Quality

Comprehensive Protection Features

Industrial-grade protection technologies safeguard both the PSU and connected components.

Protection Systems Include:

• OPP (Over Power Protection)
• OVP (Over Voltage Protection)
• UVP (Under Voltage Protection)
• OCP (Over Current Protection)
• OTP (Over Temperature Protection)
• SCP (Short Circuit Protection)

Providing peace of mind during gaming, rendering and intensive workloads.

Ideal For

✅ High-End Gaming PCs
✅ RTX 5090 / RTX 5080 Systems
✅ RTX 4090 / RTX 4080 Builds
✅ AMD Ryzen 9 Workstations
✅ Intel Core i9 Systems
✅ Content Creation PCs
✅ AI & Rendering Workstations
✅ Streaming Systems
✅ Future-Proof Enthusiast Builds

Technical Specifications

General

• Brand: Seasonic
• Model: FOCUS GX-1000 ATX 3.1
• Part Number: FOCUS-GX-1000-V4
• Colour: Black
• Form Factor: ATX / EPS

Power

• Total Continuous Power: 1000W
• 80 Plus Gold Certified

Electrical Specifications

• Input Voltage: 100V - 240V
• Input Current: 13A - 6.5A
• Frequency Range: 50Hz - 60Hz
• Full Range AC Input

Cooling

• Fan Control: S3FC Hybrid Silent Fan Control
• Fluid Dynamic Bearing Fan
• Fanless Mode Support
• Fan Life Expectancy: 50,000 Hours

Reliability

• MTBF: 100,000 Hours

Modular Design

• Fully Modular
• Individual Black Braided Cables

Protection Features

• OPP
• OVP
• UVP
• OCP
• OTP
• SCP

Power Distribution

Total Continuous Power: 1000W

Dimensions

• 140 × 150 × 86mm

Operating Temperature

• 0°C to 40°C

Certifications

• 80 Plus Gold
• CE
• CB
• TUV
• cTUVus
• CCC
• BSMI
• EAC

Environmental Compliance

• Energy Star
• RoHS
• WEEE
• REACH
• ErP Lot 6

Warranty

• Manufacturer Warranty: 10 Years*

*Product heading may reference 12 years; manufacturer specifications supplied list a 10-year Seasonic warranty.

What's in the Box?

• Seasonic FOCUS GX-1000 Power Supply
• Fully Modular Cable Set
• PCIe Power Cables
• Motherboard & CPU Power Cables
• Mounting Screws
• User Documentation

Why Choose the Seasonic FOCUS GX-1000?

The Seasonic FOCUS GX-1000 ATX 3.1 is an exceptional power supply for enthusiasts who require uncompromising performance, efficiency and reliability. With 1000W of continuous power, 80 Plus Gold certification, ATX 3.1 and PCIe 5.1 compatibility, advanced Hybrid Silent Fan Control, and a premium fully modular design, it is ideally suited for flagship gaming systems, professional workstations and future hardware upgrades. Backed by Seasonic's industry-leading engineering and long warranty coverage, the FOCUS GX-1000 delivers the dependable power needed for the most demanding PC builds.