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Power Supply

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

( 4.8 Average / 27 Ratings )






Part #

(or) RM550x
(or) CP-9020090-UK
(or) CP-9020090-EU
(or) CP-9020090-AU
(or) CP-9020177-AU




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
OutletPC $109.89 +FREE s/h In stock $109.89
Amazon $109.99 Free two-day shipping with Amazon Prime In stock $109.99
( 4 new from $109.99. Last updated 26 minutes ago. )
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


Knodalisshel 10 points 36 months ago
from completed build Big Bessie

I got this PSU as a gift, and I wish all gifts were like this. It's quiet, good airflow, and obvious why it's a gold.

sh4ne 14 points 33 months ago
from completed build Mini ITX Gaming Cube

Fan-off when idle. So far so good. Powers my mITX build with a GTX 1070.

dfarell1000 26 points 33 months ago
from completed build Maximum Overdrive

i can't ever tell if its making a peep of noise. good product.

Trinergy 12 points 32 months ago
from completed build Rocking a Lynnfield in Tahiti

PSU | 11-10-2015 | newegg.com : $69.99 after rebate used credit card rewards to purchase; quiet with the fan never running

teoulas 9 points 31 months ago
from completed build Mid-range gaming HTPC

Great PSU for a single-GPU build. It's fully modular, which is essential for a small case, and semi-passive, which keeps the noise down during idle/regular usage.

elmoinundies 10 points 30 months ago
from completed build First Ever Build

Love the all black sleeved cables, made my build look great.

khmergod 12 points 29 months ago

Great power supply with enough juice for 1 big gpu.

belmen 9 points 28 months ago
from completed build Black Friday Define C Build

Originally targeted at its 135mm fan but later I found it even better: this unit works almost always in semi-passive mode and the fan is barely spinning! Even the quietest fan can’t beat no fan. Comes with $20 rebate card as well.

rennseppl 20 points 26 months ago
from completed build Silent 1440p vacuum cleaner

Good power supply with black sleeved cables and not hearable / ZERO noise.

Droggelbecher 10 points 23 months ago
from completed build Droggelbechers Multitool

Sweet spot in terms of wattage for this build, it has a silent 0RPM mode as well and it rarely ever starts spinning the fan. Modularity and 80+ Gold is very nice, as well as the sleeved, black cables. When new this thing has a unpleasant stench of chemicals to it, but after a month of usage it's pretty much gone.