Power outages, noisy fans and unstable performance can cripple any build, leaving you frustrated and risking hardware loss. The Corsair RM850x, 850 W, 100 - 240 V, 47 - 63 Hz, 10 - 5 A, Power Supply delivers reliable, quiet power to keep your PC running smoothly, whether you’re gaming, creating content or running demanding workloads.
Usages of a 850 W Power Supply
A high-capacity unit fits naturally into many scenarios.
- Building a high-end gaming rig with multiple graphics cards.
- Upgrading a workstation that runs intensive rendering software.
- Powering a small home server that operates 24/7.
- Adding extra storage drives for large media libraries.
- Supporting overclocked CPUs that demand stable voltage.
Why Choose Corsair Power Supply
If you’re assembling a performance-focused PC, you need a supply that won’t bottleneck your components. Many builders struggle with insufficient wattage, noisy operation or poor efficiency, leading to higher electricity bills and reduced component lifespan. This unit offers the power, silence and efficiency that serious users expect, fitting seamlessly into any ATX-compatible case.
Key Features of a 850 W Power Supply
- Efficiency: 90%. Delivers gold-level energy conversion, lowering your power costs.
- Power protection features: Over current, Over power, Over voltage, Overheating, Short circuit. Safeguards all components from electrical faults.
- Fully-Modular cabling: Allows you to use only the cables you need, improving airflow and cable management.
- Silent mode: Enables the fan to stop at low loads, keeping your system whisper-quiet.
- 80 PLUS Gold certification: Guarantees high efficiency across a wide load range.
- Combined power (+12V): 849.6 W. Provides ample headroom for multiple GPUs and demanding CPUs.
- Weight: 3.28 kg. Sturdy yet manageable for installation.
- Dimensions (HxDxW): 86 mm × 160 mm × 150 mm. Fits standard ATX cases without space issues.
- Number of SATA power connectors: 8. Supports numerous drives and SSDs.
Benefits of Corsair Power Supply
You’ll enjoy lower electricity bills thanks to high efficiency, while the comprehensive protection features keep expensive components safe from power spikes. The fully modular design reduces clutter inside the case, improving cooling and making future upgrades easier. Silent operation means you can focus on work or play without distracting fan noise, and the ample 850 W capacity ensures you won’t need another upgrade for years.
Specifications
| Power |
| Power protection features |
Over current, Over power, Over voltage, Overheating, Short circuit |
| Efficiency |
90% |
| Max output current (+5Vsb) |
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 (+5V) |
150 W |
| Combined power (+12V) |
849.6 W |
| Combined power (+3.3V) |
150 W |
| Input current |
10 - 5 A |
| AC input frequency |
47 - 63 Hz |
| AC input voltage |
100 - 240 V |
| Total power |
850 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| PCI Express power connectors (12+4 pin) |
1 |
| PCI Express power connectors (6+2 pin) |
3 |
| EPS power connector (4+4 pin) |
Yes |
| EPS power connector (8-pin) |
No |
| Peripheral (Molex) power connectors (4-pin) |
2 |
| Number of PATA power connectors |
3 |
| Number of SATA power connectors |
8 |
| Motherboard power cable length |
61 cm |
| Motherboard power connector |
24-pin ATX |
| Performance |
| Silent mode |
Yes |
| ATX version |
3.1 |
| 80 PLUS certification |
80 PLUS Gold |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC/Server |
| Design |
| Illumination |
No |
| Number of fans |
1 fan(s) |
| Cooling type |
Active |
| Product colour |
Black |
| Certificates |
| Compliance certificates |
Low Voltage Directive (LVD), RoHS, UKCA |
| Packaging content |
| Cable tie(s) included |
Yes |
| Cables included |
AC |
| Weight & dimensions |
| Weight |
3.28 kg |
| Height |
86 mm |
| Depth |
160 mm |
| Width |
150 mm |
