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Power Supply

Corsair - RMx (2018) 550 W 80+ Gold Certified Fully-Modular ATX Power Supply

( 4.5 Average / 6 Ratings )





RM550x (2018)

Part #

(or) CP-9020177-UK
(or) CP-9020177-EU


Black / Silver




550 W



Efficiency Certification

80+ Gold

PCI-Express 6+2-Pin Connectors


Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Memory Express $109.99 $109.99+
Newegg Canada $109.99 In stock $109.99+
Corsair $119.99 In stock $119.99+
PC-Canada $124.99 Out of stock $124.99+
Vuugo $125.91 Out of stock $125.91+

Price History (Excluding Tax) History:


jzoott 1 point 3 months ago

Love the packaging it came in with the felt bag for all the cables it really felt premium. Also a seriously quiet power supply. However, the cables that came with it are quite stiff so building with those cables are a bit difficult.

RinkMoose 6 points 2 months ago
from completed build First Build: Panda Mode

Does what it is supposed to do, but the cables aren't the nicest.

Bitl 12 points 2 months ago
from completed build PROJECT SOMBRA

Modular power supply and very good from what I heard of the RMx section of power supplies. Comes with a lot of cables however these cables come with in-cable capacitors along with being stiff in general which impeads cable management. Might consider getting less stiff cables in the future.

LucasPC1 4 points 2 months ago
from completed build Blackout w/minimal RGB

I wanted a fully modular PSU and this was the cheapest one at the time at $50. Reliable, relatively cheap, and not too much more than the typical semi-modular bronze certified PSUs. I plan to put in custom sleeved cables in the future, but for now, the all black cables are fine.

maxzeightfive 7 points 2 months ago
from completed build Dream Machine

A high quality PSU, it has a pretty nice metal sticker bundled with it.

TINSPRIECXCAS 8 points 1 month ago
from completed build The Assimilation Station

The cables are gigantic and hard to manage. Other than that, it is a fantastic modular PSU.