Seasonic CORE GX-750 ATX 3.1 750W 80 Plus Gold Modular PSU

High-Efficiency, Future-Ready Power for Gaming and Performance PCs

The Seasonic CORE GX-750 ATX 3.1 is a premium fully modular power supply designed to deliver reliable power, outstanding efficiency and next-generation compatibility for modern gaming systems and workstation builds. Compliant with the latest ATX 3.1 and PCIe 5.1 standards, this 750W PSU is ready to support the newest graphics cards and processors while maintaining the exceptional reliability for which Seasonic is renowned.

Featuring 80 Plus Gold certification, a native 12V-2x6 PCIe Gen 5.1 connector, premium braided black cables, advanced OptiSink thermal design, and intelligent S²FC Smart & Silent Fan Control, the CORE GX-750 provides the ideal balance of performance, efficiency and low-noise operation.

Key Features & Benefits

Reliable 750W Continuous Power

Delivering 750W of continuous power, the CORE GX-750 is ideal for powering modern gaming rigs, productivity systems and content creation workstations.

Perfect for:

• Gaming PCs
• Streaming systems
• Content creation workstations
• High-performance AMD Ryzen builds
• Intel Core gaming systems
• Multi-drive storage setups

Its powerful +12V rail provides up to 744W, ensuring stable power delivery to today's most demanding components.

ATX 3.1 & PCIe 5.1 Ready

Built to the latest power supply specifications, the CORE GX-750 supports:

• ATX 3.1 Compliance
• PCIe 5.1 Graphics Cards
• Enhanced Power Excursion Handling
• Improved GPU Stability
• Future Hardware Compatibility

Designed to support current and next-generation graphics hardware without compromise.

Native 12V-2x6 GPU Connector

The included 12V-2x6 cable delivers up to 600W of power directly to compatible graphics cards.

Benefits include:

• Cleaner cable routing
• Improved power delivery
• Eliminates bulky adapters
• Better cable management
• PCIe 5.1 compliance

Compatible with:

• NVIDIA GeForce RTX 40 Series
• NVIDIA GeForce RTX 50 Series
• Future PCIe 5.1 GPUs

Legacy GPU Compatibility

A dedicated 12V-2x6 to dual 8-pin PCIe adapter cable is included, ensuring excellent compatibility with previous-generation graphics cards.

Ideal for:

• Upgrading existing systems
• Legacy GPU support
• Flexible build configurations

80 Plus Gold Certified Efficiency

The CORE GX-750 achieves 80 Plus Gold certification, reducing wasted power and improving overall energy efficiency.

Advantages include:

• Lower energy consumption
• Reduced heat generation
• Improved system efficiency
• Lower operating costs
• Greater long-term reliability

Cybenetics Platinum Efficiency Rating

In addition to 80 Plus Gold certification, the CORE GX-750 is rated Cybenetics Platinum, demonstrating excellent real-world efficiency and performance across varying workloads.

Quiet Operation with A- Noise Rating

The PSU also achieves a Cybenetics A- noise certification, ensuring low-noise operation for gaming, workstation and office environments.

Fully Modular Design

Use only the cables required for your build.

Benefits include:

• Cleaner cable management
• Improved airflow
• Easier installation
• Reduced clutter
• Simplified future upgrades

This makes the CORE GX-750 ideal for high-end custom PC builds.

Premium Braided Black Cables

The individually sleeved braided black cables provide a professional appearance and excellent cable-routing flexibility.

Perfect for:

• Gaming PCs
• Minimalist builds
• Showcase systems
• Professional workstations

Advanced Seasonic OptiSink Design

Seasonic's innovative OptiSink architecture improves airflow and heat dissipation by redesigning the internal PCB layout.

Benefits include:

• Improved thermal performance
• Lower internal temperatures
• Enhanced reliability
• Better long-term durability
• Increased operating efficiency

The improved design also allows flexible installation orientations.

S²FC Smart & Silent Fan Control

The intelligent Smart & Silent Fan Control (S²FC) system continuously adjusts cooling performance based on load and temperature.

Benefits:

• Silent low-load operation
• Efficient cooling during gaming
• Reduced fan wear
• Lower overall noise levels

120mm Hydro Dynamic Bearing Fan

A premium 120mm HDB fan delivers reliable cooling with excellent longevity.

Features include:

• Quiet operation
• Long service life
• Stable airflow
• Improved durability

Comprehensive Protection Features

The CORE GX-750 includes a full suite of industrial-grade safety protections.

Protection Systems:

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

Keeping both the PSU and connected components protected under all operating conditions.

Ideal For

• High-End Gaming PCs
• AMD Ryzen Systems
• Intel Core Gaming Builds
• RTX 4070 / 5070 / 5080-Class Systems
• Streaming PCs
• Content Creation Workstations
• Professional Productivity Systems
• Future PCIe 5.1 Upgrades

Technical Specifications

General

• Brand: Seasonic
• Model: CORE GX-750 ATX 3.1
• Part Number: SRP-CGX751-A5A32SF
• Colour: Black
• Form Factor: ATX / EPS

Power

• Total Continuous Power: 750W
• 80 Plus Gold Certified
• Cybenetics Platinum Efficiency Rating
• Cybenetics A- Noise Rating

Electrical Specifications

• Input Voltage: 100V - 240V
• Input Current: 10A - 5A
• Frequency Range: 50Hz - 60Hz
• Full Range AC Input

Cooling

• 120mm Fan
• Hydro Dynamic Bearing (HDB)
• Smart & Silent Fan Control (S²FC)

Reliability

• MTBF: 100,000 Hours
• Fan Life Expectancy: 25,000 Hours

Cable Design

• Fully Modular
• Individual Braided Black Cables

Protection Features

• OCP
• OPP
• OTP
• OVP
• UVP
• SCP

Power Distribution

• +3.3V: 20A
• +5V: 20A
• +12V: 62A
• -12V: 0.3A
• +5VSB: 3A
• Total Continuous Power: 750W

Dimensions

• 140 × 150 × 86mm

Environmental Compliance

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

Certifications

• CE
• FCC
• CB
• CCC
• TUV
• UKCA
• EAC
• cTUVus

Operating Temperature

• 0°C to 50°C

Warranty

• 7-Year Manufacturer Warranty

Why Choose the Seasonic CORE GX-750?

The Seasonic CORE GX-750 ATX 3.1 offers everything enthusiasts and gamers need in a modern power supply. Combining 750W of continuous power, 80 Plus Gold efficiency, PCIe 5.1 and ATX 3.1 compliance, a native 12V-2x6 connector, and a fully modular design, it provides a future-ready foundation for today's demanding hardware. With advanced OptiSink thermal engineering, intelligent S²FC cooling technology, premium braided black cables and a generous 7-year warranty, the CORE GX-750 delivers the quality, efficiency and reliability that Seasonic has become famous for worldwide.