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Power Supply

Corsair - RMx (2018) 850 W 80+ Gold Certified Fully-Modular ATX Power Supply

( 4.8 Average / 12 Ratings )





RM850x (2018)

Part #







850 W



Efficiency Certification

80+ Gold

PCI-Express 6+2-Pin Connectors


Completed Builds Using This Part

See All Completed Builds


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( 13 new from $154.99. Last updated 57 minutes ago. )
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* 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.ca at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


Pentium88 26 points 11 months ago

Overkill at 850W for this build, but when it comes to the PSU, good brand and lots of wattage is a must (better safe than sorry). Fully modular , 80 plus gold certified and comes from Corsair, think that's all we need. Easy cable management and lots of spare cables.

mtmcdaniel 6 points 9 months ago
from completed build First build since 2002.

A little overkill here for the system I put together, but I got a deal on it for $70. No issues or complaints here. Comes with all the necessary cables and then some to get the job done.

anshugiri 2 points 5 months ago
from completed build Middle Weight Boxer

Quiet, quiet, quiet. Everything about this PSU says quality.

Robotdude 5 points 5 months ago

Clean quiet power what's not to love

Ipecac 9 points 4 months ago
from completed build Nightmare on AMD street

Works so far!

Compromise 164 points 4 months ago
from completed build Quiet White

I actually got the "White 2018" version. After reading reviews online, thought it would be more quiet, but it is a bit loud.

Okunz 11 points 2 months ago
from completed build Titanium

she's a running the power

zrobb 16 points 1 month ago
from completed build Zrobb 2.0

Upgraded my CX650M unit to the RMx series because I wanted to swap the stock cables for custom sleeved cables. Didn't want to go with extensions as I plan to add a tempered glass side panel to the back side of the case as well. Went with 850W because I wanted the psu to feel like a substantial upgrade and it was only 10 bucks less for the 750 and 5 less for the 650W versions so I figured why not. PSU fan doesn't even kick in unless I'm playing demanding games.

Collinator24 4 points 1 month ago
from completed build RedDragon

850 watt gold psi from a trusted manufacturer, not much else to say. Works great

Gabe_- 7 points 1 month ago

Quiet and trusted.