Power outages and noisy fans can ruin a gaming session, but a reliable, quiet supply keeps your rig running smoothly. The Corsair RM850x, 850 W, 100 - 240 V, 47 - 63 Hz, 5 - 10 A, Power Supply delivers stable, efficient power for high-performance PCs, letting you focus on the game rather than worrying about stability.
Why Choose a Corsair Power Supply
You need a PSU that can handle demanding components without overheating or wasting electricity. Inconsistent power leads to crashes, data loss and shortened hardware life, which costs you time and money. This unit solves those issues with 80 PLUS Gold efficiency, magnetic levitation cooling and fully modular cables, ensuring clean power delivery and a tidy build.
Usages of a 850 W Power Supply
Ideal for enthusiast gaming rigs, workstations and content-creation PCs that use multiple graphics cards or high-end CPUs, this supply provides ample headroom for future upgrades while maintaining low noise during light loads.
Benefits of Corsair Power Supply
You enjoy near-silent operation thanks to the zero-RPM fan mode, while the high 90 % efficiency reduces your electricity bill. The fully modular design cuts cable clutter, improving airflow and making assembly easier. Japanese-grade capacitors guarantee long-term reliability, and the robust resonant LLC topology ensures stable voltage under heavy loads. Compatibility with the latest 12-pin GPU cables means you’re ready for next-gen graphics cards.
Key Features of a 850 W Power Supply
- Magnetic Levitation Fan: 135 mm fan with levitation bearing. Provides quiet, reliable cooling.
- Efficiency: 90 %. Delivers more power to components while wasting less energy.
- Zero RPM Mode: Fan stops at low/medium loads. Gives silent operation when the system is idle.
- Fully Modular Cabling: Only connect the cables you need. Reduces clutter and improves airflow.
- EPS12V Connectors: Multiple EPS12V ports included. Supports modern motherboards and CPUs.
- 12-Pin GPU Compatibility: Works with the newest high-power graphics cards.
- Weight: 1.7 kg. Light enough for easy handling yet solidly built.
- Dimensions: 86 mm × 160 mm × 150 mm (H × D × W). Fits standard ATX cases without issue.
- Output Current (+12 V): 70.8 A. Supplies ample power for multiple GPUs and high-draw components.
- 80 PLUS Gold Certification: Guarantees ≥87 % efficiency across the full load range.
Specifications
| Power |
| Efficiency |
90% |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.3 A |
| Max output current (+5V) |
20 A |
| Max output current (+12V) |
70.8 A |
| Max output current (+3.3V) |
20 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (-12V) |
3.6 W |
| Combined power (+5V) |
150 W |
| Combined power (+12V) |
849.6 W |
| Combined power (+3.3V) |
150 W |
| Input current |
5 - 10 A |
| AC input frequency |
47 - 63 Hz |
| AC input voltage |
100 - 240 V |
| Total power |
850 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| ATX Power connector (24-pin) |
Yes |
| CPU power cable length |
65 cm |
| CPU power connector (4+4 pin) |
Yes |
| PCI Express power connectors (6+2 pin) |
2 |
| EPS power connector (4+4 pin) |
Yes |
| Peripheral (Molex) power cable length |
750 mm |
| Peripheral (Molex) power connectors (4-pin) |
1 |
| SATA power cable length |
750,850 mm |
| Number of SATA power connectors |
4 |
| Motherboard power cable length |
61 cm |
| Motherboard power connector |
24-pin ATX |
| Performance |
| Noise level |
35 dB |
| 80 PLUS certification |
80 PLUS Gold |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| On/off switch |
Yes |
| Fan location |
Top |
| Number of fans |
1 fan(s) |
| Fan diameter |
13.5 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Packaging content |
| Cables included |
AC, CPU, DC, PCIe, Peripheral (Molex), SATA |
| Weight & dimensions |
| Weight |
1.7 kg |
| Height |
86 mm |
| Depth |
160 mm |
| Width |
150 mm |
