Seasonic CORE GX White ATX 3.1 850W Gold Modular PSU
Seasonic
Seasonic CORE GX White ATX 3.1 850W Gold Modular PSU
The Seasonic CORE GX White ATX 3.1 850W Gold Modular PSU is a fully modular power supply built for PC builders and enthusiasts upgrading to next-generation components. It meets the latest ATX 3.1 and PCIe 5.1 standards while including an adapter cable for older GPUs, so you can upgrade your power supply without replacing graphics cards from previous generations.
Why this product
ATX 3.1 and PCIe 5.1 ready
Complies with the latest power delivery standards for current and next-generation hardware.
80 PLUS Gold efficiency
Reduces wasted energy and heat, lowering your electricity costs over the supply's lifetime.
Fully modular cables
White braided cables connect only to components you need, simplifying cable management and airflow in your case.
Legacy GPU adapter included
The 12V-2x6 to 2× 8-pin PCIe adapter lets you pair this supply with graphics cards from earlier generations without buying extra cables.
7-year warranty
Seasonic backs this unit with a seven-year worldwide manufacturer's warranty covering defects.
- Total Continuous Power850W
- Efficiency80 PLUS Gold
- Form FactorATX/EPS
- Modular DesignFully modular
- Fan Size120mm
- ColourWhite
- Warranty7 Years
- SKUSEA-716
- EAN4711173878728
- Works with ATX and EPS motherboards and form factors.
- Supports graphics cards from previous generations via the included 12V-2x6 to 2× 8-pin PCIe adapter.
- Suitable for systems operating on 100V–240V AC input at 50Hz or 60Hz.
- Designed for operating temperatures between 0°C and 50°C; derates output from 40°C to 50°C to preserve component lifespan.
Best for
- PC builders preparing for next-generation hardware
- Users upgrading from older GPU generations without replacing the graphics card
- Builders who prioritise efficient cooling and low noise via the 120mm Hydro Dynamic Bearing fan
- Enthusiasts and system integrators who want flexible, fully modular cabling
Trade-offs
- Systems requiring more than 850W of continuous power; this unit is the mid-tier in the CORE GX White line, which ranges from 650W to 1000W.
- Environments where sustained operating temperatures exceed 50°C, as the supply will derate output to protect itself.
- Users requiring higher continuous output on the -12V rail; this supply delivers only 0.3A on -12V, suitable only for legacy support.
The updated Seasonic CORE GX White ATX 3.1 Series complies with the latest ATX 3.1 and PCIe 5.1 standards and includes four output ranges from 1000 W to 650 W in both black and white colors. 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 White line is a fully modular design equipped with white 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. These quality power supplies are backed up by Sea Sonic's 7-year worldwide manufacturer's warranty.
To ensure compatibility with older GPUs, the CORE White 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.
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.
General
| Brand | Seasonic |
|---|---|
| Model | Seasonic Core GX-850 White (SRP-CGX851-A5A32SF-W) |
| Standards Compliance | ATX 3.1 and PCIe 5.1 |
Power Delivery
| Total Continuous Power | 850W |
|---|---|
| +3.3V Output | 20A |
| +5V Output | 20A |
| +12V Output | 70A |
| -12V Output | 0.3A |
| +5VSB (Standby) Output | 3A |
Cooling & Protection
| Fan Size | 120mm |
|---|---|
| Fan Bearing | Hydro Dynamic Bearing |
| Fan Control | Smart and Silent Fan Control |
| Operating Temperature | 0°C – 50°C (derating from 40°C to 50°C) |
| Protections | OCP, OPP, OTP, OVP, UVP, SCP |
| MTBF (Excluding Fan) | 100,000 Hours |
Input & Design
| AC Input Voltage | 100V – 240V |
|---|---|
| Frequency | 50Hz – 60Hz |
| Efficiency | 80 PLUS Gold |
| Form Factor | ATX/EPS |
| Modular Design | Fully modular |
| Cable Design | White with braided pattern |
| Included Adapter | 12V-2x6 to 2× 8-pin PCIe (legacy GPU support) |
| Warranty | 7 Years worldwide |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.