Seasonic - CORE GX 850W Power Supply ATX 3.1 PCIe 5.1 (12V-2x6) Cybenetics Platinum Fully Modular RTX 5080 AMD RX 9000 Ready
Related Item
Specifications
- Wattage850 wattsModularFully modularEnergy Efficiency80 PLUS GoldATX Connector5.1PCIe Connector12V-2x6EPS12V Connector0
- Key Specs
- Wattage: 850 watts (Measurement of electrical power.)
- Modular: Fully modular
- Energy Efficiency: 80 PLUS Gold (Computer and server power supplies with the 80 PLUS certification are tested for operating efficiency at 10, 20, 50, and 100% of rated load. If a product tests at least 80% efficient, it qualifies for the base level 80 PLUS certification. Bronze, Silver, Gold, Platinum, and Titanium level certifications are given to products with even higher efficiency ratings.)
- ATX Connector: 5.1 (The configuration of the connector as it connects a computer power supply unit to an ATX motherboard.)
- PCIe Connector: 12V-2x6 (The configuration of the connector as it connects a computer power supply unit to a PCIe (Peripheral Component Interconnect Express) motherboard interface.)
- EPS12V Connector: 0 (The configuration of the connector as it connects a computer power supply unit to a EPS12V motherboard interface.)
- PCI Express Version: PCI Express 5.1
- Form Factor: ATX (The size, arrangement, and physical configuration of the product.)
- Product Length: 86 millimeters (The out of box length of the item. Length is measured as the longest dimension of the item.)
- General
- Brand: Seasonic
- Product Name: CORE GX 850W Power Supply ATX 3.1 PCIe 5.1 (12V-2x6) Cybenetics Platinum Fully Modular RTX 5080 AMD RX 9000 Ready
- Power
- Wattage: 850 watts (Measurement of electrical power.)
- Modular: Fully modular
- Energy Efficiency: 80 PLUS Gold (Computer and server power supplies with the 80 PLUS certification are tested for operating efficiency at 10, 20, 50, and 100% of rated load. If a product tests at least 80% efficient, it qualifies for the base level 80 PLUS certification. Bronze, Silver, Gold, Platinum, and Titanium level certifications are given to products with even higher efficiency ratings.)
- Power Cord Included: true (Connects your product to an electrical outlet, allowing for immediate use (provided that other installation requirements are met).)
- Connectivity
- ATX Connector: 5.1 (The configuration of the connector as it connects a computer power supply unit to an ATX motherboard.)
- PCIe Connector: 12V-2x6 (The configuration of the connector as it connects a computer power supply unit to a PCIe (Peripheral Component Interconnect Express) motherboard interface.)
- EPS12V Connector: 0 (The configuration of the connector as it connects a computer power supply unit to a EPS12V motherboard interface.)
- PCI Express Version: PCI Express 5.1
- Form Factor: ATX (The size, arrangement, and physical configuration of the product.)
- Dimensions
- Product Height: 140 millimeters (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 150 millimeters (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Length: 86 millimeters (The out of box length of the item. Length is measured as the longest dimension of the item.)
- Product Weight: 55.68 ounces (The out of box weight of the item.)
- Warranty
- Warranty - Parts: None
- Warranty - Labor: None
- Other
- UPC: 4711173878476
The updated Seasonic CORE GX ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards. Catering to a broad spectrum of PC enthusiasts and system builders, these power supplies provide a fine balance between cost and performance. The 80 PLUS® Gold certified Seasonic’s Core GX line is a fully modular design equipped with black cables featuring a braided pattern. These power supplies are solid performers for a large range of applications, where a 120 mm Hydro Dynamic Bearing fan is combined with Seasonic’s Smart and Silent Fan Control to ensure the optimal cooling performance at the lowest possible noise level.
- New Seasonic OptiSink Design: The power supply complies with the latest ATX 3.1 and PCIe 5.1 standards, provide a fine balance between cost and performance. It features 80 PLUS® Gold certification and a fully modular design. A 120 mm Hydro Dynamic Bearing fan is combined with Seasonic’s Smart and Silent Fan Control to ensure the optimal cooling performance at the lowest possible noise level.
- Optimized for PCIe 5.1 GPUs: The CORE GX ATX 3.1 power supply features a native 12V-2x6 cable designed for the latest PCIe 5.1 graphics cards. With support for up to 600W of power delivery, this cable ensures safe and stable performance for NVIDIA RTX 40 and 50 Series and future high-end GPUs. Enjoy a clean, efficient setup that’s fully compliant with ATX 3.1 and PCIe 5.1 standards.
- Full Support for Legacy GPUs: To ensure compatibility with older GPUs, the CORE GX ATX 3.1 includes a 12V-2x6 to 2× 8-pin PCIe adapter cable. It delivers reliable power up and works seamlessly with graphics cards from previous generations. This cable makes it easy to upgrade your PSU without changing your GPU—perfect for users who want next-gen power with legacy support.
- Fully Modular Cables: In Sea Sonic’s patented design feature full modularity comes hand-in-hand with the extensive use of SMD technology to increase the overall performance and reliability of this power supply. The simple and inventive layout scheme helps to attain unsurpassed quality and performance, where efficiency is further enhanced by minimized line resistance, reduced voltage drop and lower impedance.
Compare similar products

The updated Seasonic CORE GX ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards. Catering to a broad spectrum of PC enthusiasts and system builders, these power supplies provide a fine balance between cost and performance. The 80 PLUS® Gold certified Seasonic’s Core GX line is a fully modular design equipped with black cables featuring a braided pattern. These power supplies are solid performers for a large range of applications, where a 120 mm Hydro Dynamic Bearing fan is combined with Seasonic’s Smart and Silent Fan Control to ensure the optimal cooling performance at the lowest possible noise level.

CORSAIR RMx Series Fully Modular Low-Noise Power Supplies deliver quiet, dependable power with Cybenetics Gold efficiency to your PC. Fully modular, ultra-flexible embossed cables make PC builds easy, as you connect only the cables your system requires. Compliant with the ATX 3.1 power standard from Intel, RMx PSUs have the connections needed to power today’s demanding PC hardware including a native 12V-2x6 connector. 100% Japanese 105°C-rated electrolytic capacitors deliver fantastic electrical performance, while a 140mm FDB fan provides low noise cooling. Backed by a ten-year warranty, RMx PSUs are the gold standard for many years to come.

The MAG A850GL PCIE 5 power supply overflows with potency, a hallmark of the MAG series that aligns with gamers' pursuit of excellence. Infused with military-inspired elements, these gaming products have evolved into symbols of resilience. Efficiency matters, impacting performance and power use. The 80 PLUS Gold certification pledges lower energy consumption and higher efficiency. Compact and efficient, the A850GL PCIE 5 optimizes space and cable organization. Unneeded connectors are eliminated, reducing clutter and simplifying builds. Unused cables find refuge in the included cable pack. Cable organization, a common woe, finds a solution. Flat cables streamline management, enhancing airflow and orderliness. The power supply's fan employs fluid dynamic bearing, balancing cooling and noise. DC to DC and Full Bridge merge for higher efficiency and stable voltage, adapting swiftly to different needs. Sufficient power reigns, as the single rail supply caters to high-performance GPUs and CPUs with 5 CPU & PCI-E slots. Safety is paramount. Protective mechanisms ensure stability, empowering worry-free operation. In essence, the A850GL PCIE 5 L epitomizes power, space-efficiency, cable harmony, and safety. A pinnacle of technology in the MAG series, empowering triumphant gaming while embodying its spirit.

MONTECH CENTURY II - 850W High-End ATX Gaming Power Supply - 80 Plus Gold & Cybenetics Platinum - Fully Modular - ATX 3.1 & PCIe 5.1 Ready with 12V-2x6 Cable - 10 Years Warranty
| Pros for Seasonic - CORE GX 850W Power Supply ATX 3.1 PCIe 5.1 (12V-2x6) Cybenetics Platinum Fully Modular RTX 5080 AMD RX 9000 Ready | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Noise Level, Cable Management, Installation Ease, Power Supply Capacity | Overall Performance, Installation Ease, Cable Management, Noise Level, Modularity | There were no pros for this product— |
Specs
Reviews
Rating 5 out of 5 stars with 1 review
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

















































