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Cooler Master : GM Series G550M

By Andy

Cooler Master

Our Product Rating:

Looks Rating
Looks rating of 5 stars

Value Rating
Looks rating of 5 stars

Build Quality Rating
Looks rating of 5 stars

Features Rating
Looks rating of 4 stars

Overall Rating:
This product has a Gold Rating at Nismotech with an overall rating of 95%


Unique 3D circuit design offers high efficiency and improves the heat dissipation. It reduces the unnecessary cables which results in much lower crosstalk, signal noise and improves airflow
Powerful Single +12V rail for superior load balancing and VGA compatibility. All series supports VGA up to Nvidia Titan.
Modular cable designs for better cable management
Custom DC-DC module design offers higher efficiency and voltage stability
Haswell C6/C7 support & zero load operation
80 PLUS Bronze certified: up to 88% efficiency @ typical load


£47.99 - at the time of review on Wednesday 23rd April 2014
Does not include P&P

Buy this in the UK         Buy this in the US         Go to Amazon DE         Go to Amazon CA


Great value PSU that has a very attractive look. It also boasts the use of black flat cables for the majority of the cables to make for a tidy install.



Tech Specs

Model - RS550-AMAAB1-xx
Type - Intel Form Factor ATX 12V V2.31
Dimension (W x L x H) - 150 x 140 x 86mm / 5.9 x 5.5 x 3.4 inch
Input Voltage - 100-240Vac (Full Range)
Input Current - 8 - 4A
Input Frequency Range - 60 - 50Hz
PFC Active PFC - (>0.9 typical)
Power Good Signal - 100-500ms
Hold Up Time - >16ms
Efficiency - 85% Typically
MTBF - >100,000 Hours
Output Capacity - 550W
Operation Temperature - 0~40C
Certifications - 80 Plus Bronze
Connector - MB 20+4 Pin x 1
CPU12V 4+4 Pin x 1
PCI-e 6+2 Pin x 2
SATA x 6
4Pin Peripheral x 3
4Pin Floppy x 1

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