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Power Supply

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

(17 Ratings, 4.6 Average)

Prices

Merchant Base Promo Shipping Tax Availability Total
€68.88 Free two-day shipping with Amazon Prime In stock €68.88 Buy
( 31 new from €68.88. Last updated 39 minutes ago. )
€64.99 +€6.99 s/h In stock €71.98 Buy
€72.95 +€6.95 s/h In stock €79.90 Buy
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Specifications

Manufacturer

Cooler Master

Model

MasterWatt 550

Part #

  • MPX-5501-AMAAB-US
  • MPX-5501-AMAAB-UK
  • MPX-5501-AMAAB-AU
  • MPX-5501-AMAAB-EU

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

4

Efficiency

85% @ Typical Load

Output

+3.3V@20A, +5V@20A, +12@45.8A, -12V@0.3A, +5VSB@3A

Price History

    Reviews

    thrillhouse1988
    • 24 points
    • 14 months ago

    from completed build The Fort Knight

    Best bang for buck semi-modular PSU I could find. Looks good in the case and does the job. Glad that the cables were sleeved black!

    lectrician1
    • 21 points
    • 16 months ago

    from completed build My Savior

    Low-noise first-time-builder recommended PSU.

    puffketeer
    • 14 points
    • 15 months ago

    An excellent performer, and superb in terms of wattage-to-price. Plus it gives me ample headroom for when I decide to upgrade the CPU/GPU.

    Shiloh_
    • 14 points
    • 14 months ago

    from completed build Snowfall (First pc build)

    Quiet and fits in any case

    ultra700
    • 12 points
    • 21 months ago

    from completed build Orange glow - Ryzen gaming PC

    Excellent power supply. Would buy again.

    worstcaster
    • 11 points
    • 14 months ago

    from completed build My Gaming Rig

    It is proving power to my system with no problems, so far. This is my first build, so I maybe judging this harshly, but the cables seemed very stiff, which made cable management more difficult.

    dann20201
    • 9 points
    • 13 months ago

    Really small PSU now that I look at it lol. Uses its own modular cables which is weird but at least the cables are all black. Not much to say.

    Vuzili
    • 8 points
    • 3 months ago

    from completed build First Build - 2070 Super

    550 watts may seem small for my build but there is always room to upgrade this part. For now it does a good job. Have not had any crashes or blow ups so id say this was a good buy for the price and performance. cables can be a little short especially for the cpu but i make it work.

    6ig
    • 8 points
    • 17 days ago

    from completed build redemption

    pretty standard for a power supply of this caliber, sweet that it has sleeved black cables and none of that mail in rebate ******** that every psu seems to have nowadays. although, pc lets out a farting noise once in a while and this this psu may very well be the culprit.

    Xez90
    • 7 points
    • 12 months ago

    from completed build Budget workstation

    Not sure i'd recommend this product. For £10 more you can pick up a Corsair PSU of the same specifications that has better contents.

    Builds Using This Part

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    add arrow-down arrow-left arrow-right arrow-up authorcheckmark clipboard combo comment delete discord dots drag-handle dropdown-arrow errorfacebook history inbox instagram issuelink lock markup-bbcode markup-html markup-pcpp markup-cyclingbuilder markup-plain-text markup-reddit menu pin radio-button save search settings share star-empty star-full star-half switch successtag twitch twitter user warningwattage weight youtube