FSP Hydro G PRO ATX 3.1 850W 80 PLUS Gold Fully Modular PSU

The FSP Hydro G PRO 850W in its ATX 3.1 revision is a fully modular 80 PLUS Gold supply with a native 12V-2x6 connector on the unit, so a current generation graphics card plugs in with a single cable and no adapter. ATX 3.1 also means it is rated to ride out the short power spikes modern cards produce without tripping.

Key specifications

• Continuous output: 850W
• Efficiency: 80 PLUS Gold
• Standard: ATX12V V3.1
• GPU power: native 12V-2x6, no adapter needed
• Cabling: fully modular
• Fan: 120mm fluid dynamic bearing
• Dimensions: 150 x 150 x 86mm
• Warranty: 10 years
• Model: HG2-850

Why the ATX 3.1 revision matters

FSP sells three generations under the Hydro G PRO 850W name. The original is ATX12V V2.5 with no 12VHPWR at all. A middle GEN5 revision has the older 12+4 pin 12VHPWR. This listing is the current ATX 3.1 unit with the revised 12V-2x6 connector, which is the one you want for an RTX 40 or 50 series card. If you see this model quoted cheaper elsewhere, check which revision it is.

Before you buy: 850W suits a single high end card with a mainstream CPU. If you are building around a 5090 class card, look at the 1000W or higher units in this range instead.

In the box: PSU, modular cable set including 12V-2x6, mains lead, mounting screws, cable ties