Seasonic CORE GX ATX 3.1 CORE GX-850 ATX 3.1 (SRP-CGX851-A5A32SF)

Modern full-format ATX power supply with high-quality components and dual certification of 80+ Gold and Cybenetics Efficiency Platinum. This model sits at an intermediate position in the Seasonic catalog: it does not belong to the premium Prime segment, yet it does not appear as a simplified solution either. It packs a set of technologies typically associated with more expensive units, but without the brand's characteristic markup.

The device is certified to the 80+ Gold standard, and the independent lab Cybenetics has awarded it a higher Efficiency Platinum level. This means an actual efficiency of over 90% and reduced energy loss under load. An additional advantage is the low noise level: the Cybenetics Noise A- rating confirms that the 120mm fan with a fluid dynamic bearing remains virtually silent even in intensive operation mode.

Support for the ATX 3.1 standard makes the model fully ready for modern video cards, including RTX 40 lines and future generations. The unit delivers a total power of 850 Watts with almost ideal distribution: 840 Watts are dedicated to the main +12V line, covering the needs of RTX 4080/4090 bundles with Intel i9-14900K or AMD Ryzen 9 7950X processors. Compliance with the ATX 3.1 standard includes native support for PCIe 5.0 connectors without adapters — crucial for the correct operation of next-generation graphics cards with their pulse loads up to 600 Watts. The modular cable system simplifies assembly and space organization inside the case. Protective mechanisms include OVP, OPP, OCP, UVP, and OTP — a complete set guaranteeing power stability in the long term. And a seven-year warranty reinforces Seasonic's confidence in the reliability of its solution.