Tired of cramped cable jungles and noisy power units that overheat under load? The Corsair RM1200x, 1200 W, 100 - 250 V, 47 - 63 Hz, 10 A, 150 W, 1200 W is a fully modular 1200 W power supply designed to keep your high-end rig tidy, quiet and reliably powered.
Why Choose a Corsair 1200 W
Many buyers worry about whether a power supply can handle the latest graphics cards and still stay efficient. They also fear noisy fans and difficult cable routing. This unit removes those doubts with ATX 3.0 certification, side-mounted connections for easy cable access, and a 140 mm fan that stops completely at low load, delivering silent operation while maintaining 90 % efficiency.
Key Features of a 100 - 250 V 1200 W
- Efficiency: 90 %. Keeps electricity bills low and reduces heat output.
- ATX version: 3.0. Meets the newest reliability and power-delivery standards.
- Fan type: 140 mm fluid dynamic bearing with Zero RPM mode. Runs silently until high demand.
- Capacitors: 105 °C-rated Japanese electrolytic. Guarantees long-term stability.
- Input voltage: 100 - 250 V. Works worldwide without a voltage converter.
- Input frequency: 47 - 63 Hz. Compatible with all standard mains supplies.
- Weight: 2 kg. Light enough for easy installation yet solidly built.
- Form factor: ATX. Fits any case that accepts a standard ATX PSU.
Usages of a 100 - 250 V 1200 W
Ideal for gamers building a RTX 40-series rig, content creators running multiple drives, or professionals needing a workstation that never throttles under heavy compute loads.
Benefits of Corsair 1200 W
- Quiet operation: Fan stops at low load, so you enjoy a silent workspace.
- Future-proof power: ATX 3.0 compliance ensures compatibility with upcoming components.
- Easy cable management: Side-mounted connectors let you reach cables without straining.
- Energy savings: 80 PLUS Gold efficiency cuts electricity use and heat.
- Reliability: 10 000 h MTBF and high-grade capacitors give peace of mind for years.
Specifications
| Power |
| Efficiency |
90% |
| Max output current (+5Vsb) |
3 A |
| Max output current (+5V) |
20 A |
| Max output current (+12V) |
10 A |
| Max output current (+3.3V) |
20 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (+5V) |
150 W |
| Combined power (+12V) |
1200 W |
| Combined power (+3.3V) |
150 W |
| Input current |
10 A |
| AC input frequency |
47 - 63 Hz |
| AC input voltage |
100 - 250 V |
| Total power |
1200 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| PCI Express power connectors (8-pin) |
780 |
| PCI Express power connectors (6+2 pin) |
1 |
| EPS power connector (4+4 pin) |
Yes |
| Peripheral (Molex) power cable length |
450,550,650,750 mm |
| Peripheral (Molex) power connectors (4-pin) |
8 |
| SATA power cable length |
455,570,685,800 mm |
| Number of SATA power connectors |
16 |
| Motherboard power cable length |
61 cm |
| Motherboard power connector |
24-pin ATX |
| Performance |
| Mean time between failures (MTBF) |
10000 h |
| Bearing technology |
FDB |
| EPS version |
2.92 |
| ATX version |
3.0 |
| 80 PLUS certification |
80 PLUS Gold |
| Power supply unit (PSU) form factor |
ATX |
| Purpose |
PC |
| Design |
| Number of fans |
1 fan(s) |
| Fan diameter |
14 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Weight & dimensions |
| Weight |
2 kg |
