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Power Supply

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

( 4.8 Average / 24 Ratings )







Part #

(or) RM850x
(or) CP-9020093-UK




850 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
Newegg Business $149.99 +$6.99 s/h $156.98
OutletPC $159.89 +FREE s/h In stock $159.89
Corsair $159.99 Out of stock $159.99+
Amazon $222.63 +FREE s/h In stock $222.63
( 1 new from $222.63, 1 used from $99.26. Last updated 3 hours 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:


everforward 7 points 36 months ago
from completed build EverForward

One of Tom's Hardware's top tier PSUs. I got it for below $100, which is very worth it. Cords were ample and are very high quality.

Sxcbeast 17 points 36 months ago
from completed build Security

love that I got this at such a great deal! I pulled the trigger on this thinking it wasn't going to go down any further in price, and I was right! It was back up to $190 when I last looked at it.

B.Scorpion 13 points 36 months ago
from completed build Core i5 6600k, GTX970 in Iraq

I wanted something somewhat future proof, just in case I would get a more powerful GPU or maybe SLI in the future, the RMx series is new, good, well built, with a better price that other series that have the digital link system that I would really never use.

BaronKDA 28 points 31 months ago

Works well. Was impossible to find a set of custom sleeved cables here unfortunately. So I made due with extenders which did make cable management much harder.

Ghosthunter21 9 points 29 months ago
from completed build First Custom PC, Enthusiast build

Solid PSU, the modular cables makes cabling less of a clusterf***k. Very quiet.

ShaMoken 8 points 29 months ago

So far no troubles, I like that it's Fully-Modular so only the cables I need are in the case!

AmatisP1me 24 points 29 months ago
from completed build Black Pearl

A bit overkill but it was the same price for a 750 watt, so I was just like... whatever. Great modular PSU. I trust Corsair in this regard. The only place it loses its star is in the wall adapter. When I was building, it just didn't feel like it was plugging into the pc securely. In fact it was a bit loose. After I was done building and put the PC where it actually lived, I had do make sure the cable was tightly curved so it wouldn't wiggle in the socket. This same thing happened with a work PC in my office. We ended up switching a to a different cable to plug it into the wall that was much more secure and a tighter fit. I may call Corsair and ask if they have a solution to this... The computer is getting power though. It works.

shadowbyte918 32 points 23 months ago
from completed build Snorlax (MKIII)

It's a power supply that works. Flat black cables, and fully modular interface. Not much else to say here.

bigdogusn 15 points 22 months ago
from completed build Maximilian

PSU: I found it on amazon on sale. Never looked back. It came in a felt bag! Everything about it really feels high quality.

maorlavi 20 points 21 months ago

I used this for my first ever build, and by far - this was the most challenging part to choose without and true hardware knowledge. After a massive research this was my No.1 pick, it has excellent efficiency, Corsair PSUs are known to be highly reliable and stable. I am not an electrician or hardware expert so I can't completely rationalize my argument, but anywhere I've looked - this averages as the best option for my build.