Description
Unlock consistent and reliable power delivery with theย Corsair RM850x 850W ATX Modular Power Supplyย in your arsenal. This PSU sports an 850 wattage and 80 PLUS Gold certificate to supply even the most power-hungry hardware with everything it needs at maximum efficiency. ATX 3.1 compliance and PCIe 5.1 connectivity mean you can utilise this power supply alongside modern-day graphics cards, including the NVIDIA RTX 40 and 50 Series. Plus, the integrated 140mm fan has been optimised for whisper-quiet operation and incredible thermal performance.
Corsair RM850x 850W ATX Modular Power Supply at a Glance:
- 850 wattage
- ATX form factor – with fully modular cables
- 80 PLUS Gold certified
- PCIe 5.1 connectivity
- ATX 3.1 compliant
- Low-noise FBD 140mm fan
Gold Standard of Performance
Theย Corsair RM850 850w ATX Modular Power Supplyย comes equipped with everything you need to build your next AAA PC or workstation. Armed with a 850 wattage and built utilising premium 100% industrial-grade 105ยฐC Japanese capacitors, unlock consistent and reliable power delivery. Compliant with ATX 3.1 regulations and featuring PCIe 5.1 connectivity, you can use this PSU to power even the most demanding hardware, including the NVIDIA RTX 50 Series.
To ensure peak efficiency no matter your workload, theย Corsair RM850 850w ATX Modular Power Supplyย features an 80 PLUS Gold rating, delivering you maximum efficiency at half or even full loads.
Since theย Corsair RM850x 850W ATX Modular Power Supplyย is completely modular, youโll only have to connect the cables you need. Plus, its ATX form factor means this PSU can fit within most PC cases, such as Mid or Full Towers.
Thermal Excellence
Theย Corsair RM850 850w ATX Modular Power Supplyย has been optimised to perform cool and quiet, designed to continuously work at 50ยฐC. The integrated 140mm fluid dynamic fan features an intelligent dome structure to minimise excess noise, while the zero RPM mode facilitates near-silent operation at low to medium loads.
Whatโs more, the manual fan override knob grants you full control. With this, easily override the zero RPM mode and manually adjust both your airflow and fan speed to suit your preferences.
| Power | |
| Total power | 850 W |
| AC input voltage | 100 – 240 V |
| AC input frequency | 47 – 63 Hz |
| Input current | 10 – 5 A |
| Combined power (+3.3V) | 150 W |
| Combined power (+12V) | 849.6 W |
| Combined power (+5V) | 150 W |
| Combined power (+5Vsb) | 15 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.8 A |
| Max output current (+5V) | 20 A |
| Max output current (+5Vsb) | 3 A |
| Efficiency | 90% |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit |
| Ports & interfaces | |
| Motherboard power connector | 24-pin ATX |
| Motherboard power cable length | 61 cm |
| Number of SATA power connectors | 8 |
| Number of PATA power connectors | 3 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| EPS power connector (8-pin) | No |
| EPS power connector (4+4 pin) | Yes |
| PCI Express power connectors (6+2 pin) | 3 |
| PCI Express power connectors (12+4 pin) | 1 |
| Cabling type | Fully-Modular |
| Performance | |
| 80 PLUS certification | 80 PLUS Gold |
| Purpose | PC/Server |
| Power supply unit (PSU) form factor | ATX |
| ATX version | 3.1 |
| Silent mode | Yes |
| Design | |
| Product colour | Black |
| Cooling type | Active |
| Number of fans | 1 fan(s) |
| Illumination | No |
| Packaging content | |
| Cables included | AC |
| Cable tie(s) included | Yes |
| Certificates | |
| Compliance certificates | Low Voltage Directive (LVD), RoHS, UKCA |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 160 mm |
| Height | 86 mm |
| Weight | 3.28 kg |
| Efficiency Class | |
| 80PLUS Efficiency | 80 PLUS Gold |












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