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Power Supply

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

( 4.8 Average / 11 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


Prices for this part are not available.

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 163 points 3 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 1 month 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.