Tired of unstable power that forces you to reboot mid-game or lose work? A reliable Power Supply keeps every component fed with clean, efficient electricity, preventing crashes and protecting your investment. The Corsair RM850x, 850 W, 100 - 240 V, 47 - 63 Hz, 5 - 10 A, Power Supply delivers exactly that, giving you the confidence to push your PC to its limits.
Usages of a 850 W Power Supply
Ideal for high-end gaming rigs, content-creation workstations and multi-GPU builds, this Power Supply provides ample headroom for demanding workloads, ensuring smooth performance whether you’re rendering video or battling online.
Benefits of Corsair Power Supply
- Silent operation: Zero-RPM mode stops the fan at low loads, keeping your room quiet.
- High efficiency: 90 % peak efficiency reduces electricity costs and heat.
- Modular flexibility: Fully-modular cables let you connect only what you need, improving airflow.
- Future-proof: Supports 12-pin GPU cables for the latest graphics cards.
- Reliable components: Japanese 105 °C capacitors guarantee long-term stability.
Corsair Power Supply Choice
Choosing this Power Supply means you get more than just wattage. The magnetic-levitation fan delivers low-noise cooling while the resonant LLC topology ensures stable voltage under varying loads. You also benefit from a compact ATX form factor that fits most cases without sacrificing performance.
Key Features of a 850 W Power Supply
- Efficiency: 90 %. Keeps power loss low and saves on electricity bills.
- Total power: 850 W. Provides enough headroom for demanding builds and future upgrades.
- Input voltage: 100 - 240 V. Works worldwide with any standard mains supply.
- Input current: 5 - 10 A. Matches typical household circuits safely.
- Fan diameter: 13.5 cm. Large fan moves more air for better cooling.
- Weight: 1.7 kg. Light enough for easy installation yet solidly built.
- Dimensions (HxDxW): 86 mm × 160 mm × 150 mm. Fits standard ATX cases comfortably.
- Connectors: 24-pin ATX, 4+4 pin EPS, 2 × 6+2 pin PCIe, 4 × SATA, 1 × Molex. Offers extensive compatibility with modern hardware.
- Cable lengths: CPU 65 cm, Motherboard 61 cm, SATA 750-850 mm, Molex 750 mm. Provides enough reach for tidy cable management.
- Noise level: 35 dB. Maintains a low acoustic profile even under load.
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 |
