Power-hungry rigs often suffer instability or noisy fans when the supply can’t keep up, leaving you frustrated during gaming or heavy workloads. The Cooler Master Power Supply delivers 1250 W of clean, efficient energy, perfect for high-end builds that demand reliable power for the latest RTX 40-series cards and overclocked CPUs.
Cooler Master Power Supply
A stable power source is essential for any performance-focused PC. Without enough wattage, components may throttle or shut down, causing data loss and a poor experience. This unit solves those issues by meeting the ATX 3.1 standard and providing ample headroom for future upgrades, ensuring your system runs smoothly even under peak loads.
Usages of a 1250W Power Supply
Ideal for enthusiast gaming rigs, workstation PCs, and overclocked systems, this supply handles multiple high-end graphics cards, demanding CPUs, and extensive storage arrays without strain, making it a solid choice for builders who need uncompromised performance.
Benefits of Cooler Master Power Supply
You gain industry-leading 80 PLUS Gold efficiency, meaning lower electricity bills and less heat. The fluid-dynamic bearing fan stays silent until the load reaches 40 % of capacity, keeping your workspace quiet. Fully modular cables let you organise wiring for optimal airflow and a tidy interior. Robust protection features guard against over-current, over-voltage and short circuits, giving you peace of mind. The unit also tolerates ambient temperatures up to 50 °C, so it stays reliable in hot environments.
Key Features of a 1250W Power Supply
- Efficiency: 90 %. Guarantees high performance while reducing power waste.
- ATX version: 3.1. Ensures compatibility with the latest motherboard standards.
- Input voltage: 100 - 240 V. Works worldwide without the need for adapters.
- Input current: 15 - 7 A. Handles a wide range of power draw safely.
- Fan diameter: 14 cm. Provides effective cooling in a compact size.
- Fan location: Top. Improves airflow across the chassis.
- MTBF: 100 000 h. Offers long-term reliability for years of use.
- Power Good signal delay: 100 - 150 ms. Delivers stable voltage when the system powers up.
- Protection features: Over current, over power, over total voltage, over voltage, short circuit, under voltage. Safeguards all components.
- Weight: 3.02 kg. Sturdy yet manageable for installation.
Specifications
| Power |
| Power protection features |
Over current, Over power, Over total voltage, Over voltage, Short circuit, Under voltage |
| Efficiency |
90% |
| Hold time |
16 ms |
| Power Good signal delay range |
100 - 150 ms |
| Max output current (+5Vsb) |
3 A |
| Max output current (-12V) |
0.3 A |
| Max output current (+12V) |
104 A |
| Max output current (+3.3V) |
20 A |
| Combined power (+5Vsb) |
15 W |
| Combined power (-12V) |
3.6 W |
| Combined power (+5V) |
120 W |
| Combined power (+12V) |
1248 W |
| Combined power (+3.3V) |
120 W |
| Power Factor Correction (PFC) type |
Active |
| Input current |
15 - 7 A |
| AC input frequency |
50/60 Hz |
| AC input voltage |
100 - 240 V |
| Total power |
1250 W |
| Ports & interfaces |
| Cabling type |
Fully-Modular |
| ATX Power connector (24-pin) |
Yes |
| PCI Express power connectors (6+2 pin) |
3 |
| EPS power connector (4+4 pin) |
Yes |
| EPS power connector (8-pin) |
Yes |
| Peripheral (Molex) power cable length |
740,620,500,860 mm |
| Peripheral (Molex) power connectors (4-pin) |
4 |
| SATA power cable length |
500,620,740,860 mm |
| Number of SATA power connectors |
12 |
| Motherboard power cable length |
65 cm |
| Motherboard power connector |
24-pin ATX |
| Performance |
| Mean time between failures (MTBF) |
100000 h |
| Bearing technology |
TBB |
| ATX version |
3.1 |
| 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 |
14 cm |
| Cooling type |
Active |
| Product colour |
Black |
| Operational conditions |
| Operating temperature (T-T) |
0 - 50 °C |
| Operating temperature (T-T) |
0 - 50 °C |
| Certificates |
| Certification |
TUV, cTUVus, CE, FCC, BSMI, CCC, EAC, RCM, UKCA, BIS |
| Compliance certificates |
CE, UKCA |
| Weight & dimensions |
| Weight |
3.02 kg |
| Height |
86 mm |
| Depth |
180 mm |
| Width |
150 mm |
| Packaging data |
| Package type |
Box |
| Package weight |
3.42 kg |
| Package height |
122 mm |
| Package depth |
333 mm |
| Package width |
197 mm |
| Technical details |
| Sustainability certificates |
ErP |
