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Cooler Master
Cooler Master 550W power supply
ATX 12 V 2.52 desktop power supply delivering 550 W with active PFC, 80 PLUS Bronze efficiency above 87 %, a 120 mm HDB fan, and full protection suite
- ColorBlack
- TypeATX12 V 2.52
- Maximum Power550 W
- Fans1
- PFCActive
- Main Connector20+4 Pin
- 80 PLUS Bronze certification delivers over 87 percent efficiency
- Active PFC with LLC plus synchronous rectification and DC-to-DC design
- 120 mm HDB fan runs quietly under temperature control
- Full protection suite covers OVP, OPP, OTP and SCP
- 550 watt output with 41 amp on the 12 volt rail
Rated power and form factor
This ATX12V 2.52 power supply delivers 550 W of continuous power in a 150 mm long chassis. The non-modular design keeps all cables fixed for simple installation in standard desktop builds.
Intended use and limits
Suitable for mid-range systems with a single graphics card needing one 6-pin and one 6+2-pin connector. Builds requiring fully modular cabling or multiple high-power GPUs should consider a higher-wattage modular unit.
12 V rail capacity
The +12 V rail supplies up to 41 A, providing the bulk of the 550 W for modern CPU and GPU loads. This figure determines whether the unit can sustain your components under full load.
Points forts
- 80 PLUS Bronze certification delivers over 87 percent efficiency
- Active PFC with LLC plus synchronous rectification and DC-to-DC design
- 120 mm HDB fan runs quietly under temperature control
- Full protection suite covers OVP, OPP, OTP and SCP
- 550 watt output with 41 amp on the 12 volt rail
Caractéristiques
| Brand | Cooler Master |
|---|---|
| Series | 80 Plus |
| Model | 550W |
| Color | Black |
| Type | ATX12 V 2.52 |
| Maximum Power | 550 W |
| Fans | 1 |
| PFC | Active |
| Main Connector | 20+4 Pin |
| PCI-Express Connector | 1 x 6 Pin, 1 x 6+2 Pin |
| SATA Power Connector | 6 |
| CrossFire | CrossFire Ready |
| Max PSU Length | 150 mm |
| Modular | Non-Modular |
| Hold-up Time | >14ms |
| Efficiency | >87% |
| Energy-Efficient | 80 PLUS BRONZE Certified |
| Over Voltage Protection | Yes |
| Overload Protection | Yes |
| Protection | OVP / OPP / OTP / SCP |
| Input Voltage | 200-240V |
| Input Frequency Range | 50/60 Hz |
| Input Current | 5A |
| MTBF | >100,000 Hours |
| Connectors | 1 x 24 pin (20+4) ATX |
| Power Rating | 500W |
| Size/Dimensions | 140 × 150 × 86mm |
| Dimensions | 140 × 150 × 86mm |
| Weight | 1.51KG |
| 12V Power Connector | 1 x 4+4 Pin ATX/EPS 12V |
| Fans Total Quantity | 1 |
| Top Fans Size | 120mm |
| Top Fans Bearing Type | HDB |
| Over Load Protection | Yes |
| Short Circuit Protection | Yes |
| Under Voltage Protection | Yes |
| Over Current Protection | Yes |
| Over Power Protection | Yes |
| Over Temperature Protection | Yes |
Questions sur cet article
What does the 550W rating mean for a typical desktop build?
The unit can deliver up to 550W of continuous power, with 41A available on the 12V rail and 16A each on the 3.3V and 5V rails, supporting mid-range CPUs and graphics cards.
How does the 80 PLUS Bronze certification and ATX 12V 2.52 standard affect efficiency and compatibility?
Certification guarantees over 87% efficiency at typical loads, while the ATX 12V 2.52 design ensures correct voltage regulation and PG signalling for modern motherboards.
Will the 150mm long non-modular chassis with a 120mm HDB fan fit my case and mounting points?
The supply measures 140mm wide, 150mm deep and 86mm high, uses a single 120mm hydraulic-bearing fan, and includes standard ATX mounting screws for typical case bays.
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