Corsair HX850
Corsair HX850 is a 2017 HX Series 850W, Platinum, fully modular ATX PSU for quiet, efficient enthusiast builds with a single/multi‑rail +12V toggle.
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Product overview
Corsair’s HX850 belongs to the 2017 HX Series (Platinum) introduced at CES on January 5, 2017; this 850 W ATX, fully modular unit pairs an 80 PLUS Platinum rating with a 135 mm fluid-dynamic-bearing fan and a 10‑year warranty. Regional retail rollouts followed through 2017.
Positioned in the enthusiast tier, it exists to provide quiet, efficient, long‑lived power for demanding ATX builds. It’s well suited to high-end GPU builds, overclocked CPUs, and mid‑range gaming systems that want headroom and low noise without moving to a kilowatt class. Notable: it includes a hardware switch to toggle single‑ or multi‑rail +12 V operation. It predates ATX 3.0 and lacks a native 12VHPWR lead, so PCIe 5.0 GPUs require an adapter or compatible cable.
- high-end GPU builds
- headroom/overclocking
- mid-range gaming
Product highlights
- 80 PLUS Platinum efficiency, delivering 90% energy efficiency at real world load conditions.
- ZeroRPM mode for fanless operation at low loads and outstanding noise reduction.
- 135mm thermally controlled, fluid dynamic bearing fan only spins up as needed.
Specifications
- Wattage
- 850 W
- Efficiency
- 80 + Platinum
- Modular
- Yes
- Eco Mode
- No
- Form factor
- ATX
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