
Corsair RMX White Series (2018), RM850x
Corsair RM850x White (2018): 850W 80+ Gold fully modular ATX PSU for quiet mid‑range to high‑end builds; pre‑ATX 3.0 with no native 12VHPWR.
As an Amazon Associate, GixCore earns from qualifying purchases.
Product overview
Released on August 16, 2018, the Corsair RMx White Series (2018) RM850x is a white-finished member of Corsair’s RMx (2018) refresh. It’s an 80 PLUS Gold, fully modular ATX unit with a 10‑year warranty and ATX12V v2.4/EPS 2.92 compliance.
Positioned as high_end for its class, it exists to provide a quiet, reliable 850 W option for clean-looking builds. It suits mid‑range gaming through many high‑end GPU builds that use 8‑pin PCIe power, offers headroom for powerful CPUs via dual EPS, and features a zero‑RPM fan mode for low‑noise operation. Being pre‑ATX 3.0, it lacks a native 12VHPWR lead and is best paired with GPUs that don’t require it or with adapters. Notable: compact 160 mm depth helps in tighter ATX cases.
- mid-range gaming
- high-end GPU builds
- headroom/overclocking
Product highlights
- 80+ gold Certified high efficiency operation for lower power consumption less noise and cooler temperatures
- Tuned for Low noise operation a specially set fan curve ensures that even at full load fan noise is kept to a minimum
- Zero rpm fan mode at Low and medium loads the cooling fan switches off entirely for near-silent operation
- 100% all Japanese capacitors premium internal components ensure unwavering power delivery and long-term reliability
- Fully modular flat cables flexible fully modular flat White cables for Easy cable routing
Specifications
- Wattage
- 850 W
- Efficiency
- 80+ Gold
- Modular
- Yes
- Eco Mode
- No
- Form factor
- ATX
Compatible Motherboards

B450M PRO-M2 Max

Prime Z390-P

Z690 AORUS PRO

B550M DS3H AC

TB360-BTC PRO 2.0

TB360-BTC D+

TUF Gaming X570-Plus (Wi-Fi)

ROG Strix B550-F Gaming WiFi II

MAG B550 Tomahawk MAX WiFi

TUF Gaming Z790-Plus WiFi

Z790 AORUS Elite AX












