Cooler Master Reactor Gold 550

550 W
11Ratings
BrandMore from Cooler Master
Currently out of stock

Product details

Check out the fully modular MWE Gold, rated 80 Plus Gold. This power supply offers a constant efficiency of 90%, low temperatures, and quiet operation. This certification guarantees a typical efficiency of 90% under normal operating conditions.

High-quality, heat-resistant components have been used to achieve gold-level performance at temperatures up to 45°C. The Silencio fan and exclusive LDB bearing ensure near-silent cooling without compromising system performance and extend lifespan.

Fully customizable cabling reduces clutter, increases airflow, and improves overall thermal performance. Flat cables enhance airflow by reducing cable cross-section, and a single +12V rail ensures that all components receive the same stable output power regardless of the cable used.

Key specifications

Form factor
ATX
80 PLUS certificate
Gold
Modularity
Modular cable management
Internal connection options
15-pin S-ATA (8x), 20+4 PIN ATX power connector (1x), 4-pin floppy (1x), 4-pin Molex (3x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x)
Item number
12957047

General information

Manufacturer
Cooler Master
Category
Power Supply PC
Manufacturer no.
MPY-5501-AFAAG-RE
Release date
20.3.2020
External links
Manufacturer's site (en)

Colour

Colour
Black
Exact colour description
Black

Power supply properties

Form factor
ATX
Efficiency
90 %
80 PLUS certificate
Gold
Modularity
Modular cable management

Power supply connectors

Internal connection options
15-pin S-ATA (8x), 20+4 PIN ATX power connector (1x), 4-pin floppy (1x), 4-pin Molex (3x), 4+4-pin 12V (1x), 6+2-pin PCI Express (2x)

Cooling properties

Cooling method
Active cooling
Number of fans
1 x
Fan diameter
120 mm
LED colour
Yellow

Safety

Power protection features
EIA, OCP, OPP, OTP, OVP, SCP

Power supply

Power
550 W

Voluntary climate contribution

CO₂-Emission
Climate contribution

Product dimensions

Length
120 cm
Width
310 cm
Height
200 cm
Weight
2460 g

Package dimensions

Length
31.20 cm
Width
20 cm
Height
12.40 cm
Weight
2.42 kg

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Power Supply PC» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 15.Gigabyte
    2.1 %
  • 16.Enermax
    2.3 %
  • 17.Cooler Master
    2.4 %
  • 18.LC-Power
    2.5 %
  • 18.Lian-Li
    2.5 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 11.Enermax
    3 days
  • 12.Seasonic
    5 days
  • 13.be quiet!
    6 days
  • 14.ASUS
    9 days
  • 15.Cooler Master
    29 days

Return rate

How often is a product of this brand in the «Power Supply PC» category returned?

Source: Digitec Galaxus
  • 6.Gigabyte
    4.4 %
  • 8.Deepcool
    4.6 %
  • 9.Cooler Master
    4.9 %
  • 10.Intertech
    5 %
  • 10.NZXT
    5 %
Source: Digitec Galaxus