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Corsair RMx Series CP-9020178-EU

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Power: 650; Cooling system: semi-passive; MB/CPU power supply: 24+8 (4+4); Manufacturer's warranty: 10 years;
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Corsair RMx Series CP-9020178-EU
Main
Power650 W
Form factorATX
Specs
PFCactive
Efficiency92 %
Cooling systemsemi-passive
Fan size135 mm
Fan bearingsliding
Certification80+ Gold
ATX12V version2.4
EPS12V version2.92
Power connectors
MB/CPU power supply24+8 (4+4) pin
SATA8
MOLEX7
PCIe 8pin (6+2)4
Floppy
Cable systemmodular
Braided wires
Cable length
MB610 mm
CPU650 mm
SATA750 mm
MOLEX750 mm
PCIe750 mm
Max. power
+3.3V25 А
+5V25 А
+12V154 А
-12V0.8 А
+5Vsb3 А
+12V648 W
+3.3V +5V130 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionUVP, OTP
Noise level22 dB
Manufacturer's warranty10 years
Dimensions (HxWxD)86x150x160 mm
Weight1.67 kg
Official Websitecorsair.com
Added to E-CatalogMarch 2016
P/N
CP-9020091-EU

CP-9020178-EU

Certificate 80+ Gold. Low ripple. Silent mode. Modular structure. Japanese capacitors. Hybrid cooler with silent operation.
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Corsair 2026 - new arrivals, bestsellers, and the most relevant models Corsair.
Model overview based on user reviews  
The Corsair RMx Series power supply units are praised for their silent operation, with the fan activating only during heavy gaming or 3D rendering, ensuring a quiet experience during normal use. Users appreciate the reduced need for cleaning, as the dust filter remains clean even after several months of use. However, there are some drawbacks, including the high price and the absence of a promised 10-year warranty in certain regions due to the lack of authorized resellers. Additionally, the cables are noted to be very rigid, which can be inconvenient during installation, especially in certain cases where the wire length may be insufficient. Despite these issues, the PSU is considered reliable with no noise or voltage fluctuations, making it a worthwhile investment for those prioritizing quality and performance.
Pros

Cons

Quietly working, but still minuses
21 February 2024 
Practice 2 days of 10-12 years per day. There is no complaining.
+ The fan turns on only during heavy gaming and 3D rendering, in normal mode it does not spin;
+ Previously, I cleaned the dust filter near the PSU once every 2 months, after the upgrade and 7 months of use, I have never cleaned the filter, there's no need.
- Bite the price;
- The promised (on the official website) 10-year warranty is missing because there is no authorized CORSAIR reseller in Ukraine;
- Very stiff wires, as soft silicone ones have been invented long ago, and at this price, they could have been replaced;
- When mounting in a Fractal Design Define R5 case, the wire length is insufficient, some have to be stretched a lot.
Ihor
It's unclear what the money is for.
23 May 2022 
If the money is burning a hole in your pocket, then you can go for it.
+ The cooler only turns on during heavy gaming and 3D rendering, it doesn't spin in normal mode.
+ I used to clean the dust filter near the PSU every 2 months, but after the upgrade and 7 months of use, I haven't cleaned it once because there's no need.
- The promised 10-year warranty is missing because there is no authorized CORSAIR reseller in Ukraine.
- The cables are very rigid, considering that soft silicone ones have existed for a while, and for this price, they could have been replaced.
Ihoruse Corsair CP-9020179-EU few months
You can take it, that's for sure (youtube.com/c/wawanxxx)
19 August 2019 
I took this PSU with the thought that it was impossible to save on a PSU, it was certainly possible to take a PSU cheaper, but it so happened that I took this one with a limited budget, I’m not very upset
Silent up to 300 W, I’ve been sitting without a video card for a year, it doesn’t make noise, it doesn’t whistle (throttle), no ripples and drawdowns in 12v, 5v, 3.3v lines, 10 years warranty
In principle, the price is high, and so everything is buzzing
wawanuse Corsair CP-9020179-EU more than year
Add Review

Corsair RMx Series configurations

Price for Corsair RMx Series
Corsair RMx Series CP-9020180-EUfrom £202.933 offers
Corsair RMx Series CP-9020094-EUfrom £303.242 offers
Video reviews

remix time

In 2015, Corsair updated its RM power supply line twice, which the company thought were good, but not perfect. First, the RMi line entered the market, which used high-quality Japanese capacitors and added the Corsair Link system to monitor the status of the power supply. Not everyone needed this thing, so a little later RMx power supplies arrived on the shelves with the same element base and Japanese capacitors, but without Corsair Link. It is about this model that we will discuss in this review.

Efficiency 92%

According to the passport, the model has a power reserve of 650 W and boasts an impressive efficiency of 92%. In fact, it turns out even better, since at a rated power of 650 W it coped with overloads reaching 730 W without any problems, while ensuring minimal output voltage deviations. I especially liked the state of the 12-volt line: no drawdowns, regardless of power consumption, and the ripple level is 2-3 times lower than normal.

10 years warranty

Among other advantages, we note the high load capacity of the +12V channel, the presence of all types of protection, a modular structure and a hybrid cooling system that allows you to switch coolers from normal to silent mode. A useful feature if the computer is used not only for games. Together with a 10-year manufacturer's warranty, this makes the Corsair RMx a reliable base for a powerful workstation or gaming machine with a couple of video cards and serious overclocking.