Seasonic CORE GX V4 850W ATX 3.1 80 Plus Gold Modular PSU

Premium 850W Power for Gaming, Workstations and Next-Generation PCs

The Seasonic CORE GX V4 850W delivers exceptional efficiency, modern connectivity and renowned Seasonic reliability for gaming systems, workstation builds and high-performance desktops. Fully compliant with the latest ATX 3.1 and PCIe 5.1 standards, this power supply is engineered to support both current and future-generation hardware with confidence.

Featuring 80 Plus Gold certification, a fully modular cable system, native 12V-2x6 GPU support, advanced OptiSink thermal design, and Seasonic's intelligent Smart & Silent Fan Control (S²FC) technology, the CORE GX V4 850W provides quiet, stable and efficient power delivery for demanding PC builds.

Key Features & Benefits

850W Continuous Power Output

Built for modern gaming and productivity systems, the CORE GX V4 delivers 850W of continuous power with excellent voltage stability.

Ideal for:

• Gaming PCs
• Streaming setups
• Content creation workstations
• CAD and rendering systems
• AMD Ryzen platforms
• Intel Core i7 and i9 systems
• High-performance GPUs

The powerful +12V rail delivers up to 840W, ensuring dependable performance during heavy workloads.

ATX 3.1 & PCIe 5.1 Compliant

Designed to meet the latest industry standards, the CORE GX V4 offers compatibility with today's most demanding hardware.

Benefits include:

• ATX 3.1 compliance
• PCIe 5.1 compatibility
• Improved transient power handling
• Support for future hardware upgrades
• Greater overall system stability

Native 12V-2x6 GPU Connector

The included 12V-2x6 PCIe cable supports modern graphics cards with up to 600W power delivery.

Compatible with:

• NVIDIA GeForce RTX 40 Series
• NVIDIA GeForce RTX 50 Series
• Future PCIe 5.1 graphics cards

Advantages include:

• Cleaner installation
• Reduced cable clutter
• Reliable GPU power delivery
• Improved cable management

Legacy GPU Compatibility

A supplied 12V-2x6 to dual 8-pin PCIe adapter cable ensures compatibility with previous-generation graphics cards.

Perfect for:

• Existing gaming systems
• Gradual hardware upgrades
• Mixed-generation PC builds

80 Plus Gold Certified Efficiency

The CORE GX V4 is certified to the 80 Plus Gold standard, delivering highly efficient power conversion.

Benefits:

• Reduced electricity consumption
• Lower operating temperatures
• Improved energy efficiency
• Reduced power waste
• Lower long-term running costs

Cybenetics Platinum Efficiency Rating

In addition to 80 Plus Gold certification, the PSU carries a Cybenetics Platinum Efficiency Rating, demonstrating excellent real-world efficiency performance.

Cybenetics A- Noise Rating

The A- noise certification confirms quiet operation across a wide range of workloads, making it ideal for gaming and professional environments.

Fully Modular Cable Design

The fully modular architecture allows builders to install only the cables they require.

Advantages include:

• Cleaner cable management
• Improved case airflow
• Easier installation
• Reduced cable clutter
• Simpler upgrades

Premium Braided Black Cables

Featuring individually sleeved black cables with a braided finish for improved aesthetics and flexibility.

Ideal for:

• Gaming builds
• Workstations
• Showcase PCs
• Tempered-glass systems

Advanced Seasonic OptiSink Design

Seasonic's innovative OptiSink thermal design enhances airflow and cooling performance by optimising the internal PCB layout.

Benefits include:

• Improved heat dissipation
• Reduced internal temperatures
• Better efficiency
• Enhanced durability
• Long-term reliability

Smart & Silent Fan Control (S²FC)

The intelligent S²FC fan control system continuously balances cooling performance and noise levels.

Benefits:

• Quiet operation during light use
• Effective cooling under load
• Lower acoustic levels
• Improved thermal management

120mm Hydro Dynamic Bearing Fan

The premium 120mm HDB fan provides long-lasting and reliable cooling performance.

Features:

• Smooth operation
• Reduced vibration
• Improved lifespan
• Quiet performance
• Stable airflow

Fan lifespan is rated at approximately 25,000 hours under specified operating conditions.

Comprehensive Protection Features

Built-in protection circuitry helps safeguard both the PSU and your connected components.

Protection Technologies Include:

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

Ideal For

✅ Gaming PCs
✅ RTX 4070 Ti, RTX 4080 & RTX 5080 Systems
✅ Streaming PCs
✅ AMD Ryzen 7 & Ryzen 9 Builds
✅ Intel Core i7 & i9 Systems
✅ Content Creation Workstations
✅ Productivity Systems
✅ Future PCIe 5.1 Upgrades

Technical Specifications

General

• Brand: Seasonic
• Model: CORE GX V4 850W
• Part Number: SRP-CGX851-A5A32SF
• Colour: Black
• Form Factor: ATX / EPS

Power

• Total Continuous Power: 850W
• 80 Plus Gold Certified
• Cybenetics Platinum Efficiency
• Cybenetics A- Noise Rating

Electrical Specifications

• Input Voltage: 100V - 240V
• Input Current: 11A - 5.5A
• Frequency Range: 50Hz - 60Hz
• Full Range AC Input

Cooling

• 120mm Fan
• Hydro Dynamic Bearing (HDB)
• Smart & Silent Fan Control (S²FC)
• Fan Life Expectancy: 25,000 Hours

Reliability

• MTBF: 100,000 Hours

Cable Design

• Fully Modular
• Individual Black Braided Cables

Protection Features

• OCP
• OPP
• OTP
• OVP
• UVP
• SCP

Power Distribution

Total Continuous Power: 850W

Dimensions

• 140 × 150 × 86mm

Operating Temperature

• 0°C to 50°C

Certifications

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

Environmental Compliance

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

Warranty

• 7-Year Manufacturer Warranty

What's in the Box?

• Seasonic CORE GX V4 850W Power Supply
• Fully Modular Cable Set
• Native 12V-2x6 GPU Cable
• PCIe Adapter Cable
• Mounting Screws
• User Documentation

Why Choose the Seasonic CORE GX V4 850W?

The Seasonic CORE GX V4 850W is an outstanding choice for gamers, creators and enthusiasts seeking premium efficiency, modern connectivity and long-term reliability. With 80 Plus Gold certification, ATX 3.1 and PCIe 5.1 compliance, native 12V-2x6 support, a fully modular cable design, and Seasonic's advanced OptiSink cooling technology, it delivers exceptional performance for today's demanding systems and tomorrow's upgrades. Backed by a 7-year manufacturer warranty, the CORE GX V4 offers the quality and dependability expected from one of the world's most respected power supply manufacturers.