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Power Supply

Cooler Master 550 W 80+ Bronze Certified Semi-modular ATX Power Supply

(14 Ratings, 4.2 Average)

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Specifications

Manufacturer

Cooler Master

Model

G550M

Part #

RS550-AMAAB1-US

Manufacturer

Cooler Master

Form Factor

ATX

Efficiency Rating

80+ Bronze

Wattage

550 W

Modular

Semi

Type

ATX

Fanless

No

PCIe 6+2-Pin Connectors

2

EPS Connectors

1

SATA Connectors

6

Molex 4-Pin Connectors

3

Price History

    Reviews

    inertiaselling
    • 174 points
    • 25 months ago

    from completed build Metal tool case computer

    It was on sale (~60€), but I still should have spent a bit more on my PSU.

    Pros: • It's (semi-)modular. When you're building a system without any 2.5" or 3.5" drives in a rather small custom case, not having to deal with useless sata cables is a must. • Despite being one of the cheapest PSUs to offer some kind of modularity at this wattage, it doesn't seem to use completely terrible materials. Tier 3 or 4 depending on the lists, so it's not the most stable, but it shouldn't explode.

    Cons: • How much would it cost to paint these cables black ? Really, the ketchup and mustard colour scheme should have disappeared a long time ago. I'm seriously considering black plastidip. • The noise ! It's unbearable ! No, really, maybe I should have added some kind of rubber padding instead of mounting it directly to a metal surface, but it's by far the noisiest component of my build when idling.

    Seasonic's fully modular 620W SS-620GM2 is often found at similar prices. Just close your eyes and click "buy".

    noblemes
    • 27 points
    • 30 months ago

    from completed build Light gaming ITX build

    This power supply is great, after reading the techpowerup review (especially the bang for buck and noise rating sections), I was sold. But still, at some point it was the loudest part in my PC, so eventually I've replaced it's fan.

    northbaysteve
    • 26 points
    • 43 months ago

    from completed build Nano Nine-Sixty

    This was the cheapest power supply (I paid £44.89) that met my criteria of 140mm deep, modular (semi modular at least) and reasonably quiet. It looks good and works well. The main cables are a bit bulky and stiff, but all the connectors fitted easily

    Puncake
    • 23 points
    • 49 months ago

    from completed build Hyperion Fury

    Cooler Master G550M : Overall good power supply.Fan is silent and does not have any problem so far.

    VladQwerty
    • 12 points
    • 20 months ago

    The PSU is ok, is semi modular, handles my system very well, but if you are a cable management perfectionist, you will need several hours to get a perfect wire management with extensions. I'd liked to be more modular cables on this PSU, for a better wire management. Overall, it's a good PSU. I recommend it!

    Aj.Shawon
    • 9 points
    • 48 months ago

    from completed build Skylake-Maxwell 6th-Gen Gaming PC

    Your pc protector

    STVRaptor
    • 6 points
    • 48 months ago

    from completed build First Build: Dragon's Breath 745

    No problems, hasn't exploded. Semi modular seems to be a good medium between fully modular and not. I would buy again.

    Reynaert98
    • 6 points
    • 47 months ago

    from completed build First Budget Build

    Using the 450W variant. Does its job fine and looks solid.

    whatinthesam
    • 6 points
    • 28 months ago

    from completed build First PC v1.0

    Power.

    Make sure to fully plug in the extra cables (sata, molex, etc.) or it won't power up at all.

    whatinthesam
    • 6 points
    • 25 months ago

    from completed build First PC v1.1

    Provides power. Have had one issue with the whole machine not starting when a cable was not fully plugged into this PSU but it was an easy enough fix (though hard to find).

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