Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply – ATX 3.1 & PCIe 5.1 Compliant – 105°C-Rated Capacitors – 80 PLUS Gold Efficiency – Modern Standby Support – Black
Original price was: £559.98.£112.19Current price is: £112.19.
Price: £559.98 - £112.19
(as of Jul 09, 2025 19:16:53 UTC – Details)
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Gaming Peripherals
DIY Components
SSD & Memory
Fully Modular PSU: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5.1 platform and resisting transient power spikes.
Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
Customers say
Customers find the power supply delivers ample power for high-end components and comes with plenty of leads for connecting components. The build quality is excellent, and customers appreciate its neat design, easy installation, and good value for money. While some customers find it super quiet, others report annoying ticking noises.
13 reviews for Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply – ATX 3.1 & PCIe 5.1 Compliant – 105°C-Rated Capacitors – 80 PLUS Gold Efficiency – Modern Standby Support – Black
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Original price was: £559.98.£112.19Current price is: £112.19.
Matthew –
Power and Silence Combined: A Remarkable PSU
The Corsair RM850ePower Supply is a powerhouse of performance and efficiency, perfectly suited for demanding PC builds. Its fully modular design simplifies cable management, allowing for a clean and organized setup while ensuring maximum airflow within the case.One of the standout features of this PSU is its low-noise operation. Even under heavy loads, the fan remains remarkably quiet, maintaining a peaceful computing environment without sacrificing performance. This is particularly appreciated during intense gaming sessions or when working on CPU-intensive tasks for extended periods.With an 850-watt capacity, this PSU delivers ample power to support high-end components, making it suitable for enthusiasts and gamers alike. Its 80 PLUS Gold certification ensures high efficiency, translating to lower energy consumption and reduced operating costs over time.Installation is straightforward, thanks to the included user manual and modular cables, which allow for easy customization based on the specific needs of your build. The build quality is excellent, as expected from Corsair, with sturdy construction and reliable components.While the performance and features of the RM850e are top-notch, the price may be a deterrent for budget-conscious builders. However, considering its efficiency, reliability, and low-noise operation, the investment is justified for those seeking a premium power supply for their high-performance PC builds.In summary, the Corsair RM850e is a compelling choice for enthusiasts who prioritize performance, efficiency, and quiet operation in their PC setups. Highly recommended.
Rynel D. –
The best power supply for my build
Absolutely fantastic. It does it’s job in delivering power and no issues at all I need to say the price was worth paying for, the quality of it is way to good and included cables are really good expect you need to sort out cable management yourself
The Bafinator –
Incredibly Easy Use
Although the PSU is a little louder than preferred it works perfectly maintaining my 3060TI and all other components of my PC. I am very happy with its affordable price and suggest it for all users who would like to run high demanding PC’s.
Fencil –
Works great as it should, but there is always a high pitched buzz coming from the inside of the PSU.
The PSU works great in general when idle and under load. My only problem is that there is a high pitched buzz constantly coming from the PSU, I’m not sure if this is normal with the RMe series having cheaper capacitors than the RMx series. Any feedback on this would help me to see if this noise is normal on these power supplies or whether i should replace, but all in all it works great when it comes to actually delivering power to my components, it’s just not as “Low-Noise” as Corsair advertised it.
Darren G. –
S-Tier Power Supply
Iâve been building computers for over 10 years at this point and Iâve only used Corsair PSUs.Back in the day it used to be the CX550m for the low cost and great components but 550w just wasnât cutting it for me anymore.So for my personal system (R7 5700x and RX7900GRE) I decided to go for something with a bit more headroom.The power supply fits great in my Fractal Design North and cable management wasnât an issue thanks to the modularity of the unit.I havenât had any issues with noise or heat and the extra headroom for wattage allows for my system to reach its full performance and allows for some nice OC.Iâve read some things about coil whine from this unit but I canât attest to this myself and Iâve been running it for over a month now.
Azure –
Good psu
Have had this over a year , Iâve gone from 6700 XT to 4080 and now 5000 series gpu. No coil whine from the psu and itâs very quiet . Has the necessary power cables for NVIDIA gpu too.
Galaxy –
Very Good Product
Was helping a friend out with a bad PSU and needed an urgent replacement – This was delivered extremely quick and had arrived VERY well packed, quick and safely. Installed very quickly, easily and the cables are labelled where they need to go. However – The box itself was not packaged discreetly or inside an Amazon Box and had me worried it could be stolen, however due to the price Amazon gives a code for the recipient which was very relieving. This is probably the best Power Supply to get for a relatively good price, I recommend it entirely and plan to promote it to others in need of new Power Supplies.
James Donohoe –
Affordable high end builds
Bought to pair with a Ryzen 9 7950X3D and Radeon 7800XT and runs both without issue. Have no plan to overclock but even at highest quality gaming there’s plenty of headroom and have had no issues.Cables feel like great quality and are also really nice lengths. Don’t see them failing and can see them lasting the life of the pc.Only odd complaint is I found some took a bit of force to actually lock into the power supply, may of just been mine or maybe slight molding issue with the connectors but it’s only slight but thought I’d mention it.
daniel coba docal –
la fuente viene con su cable de energÃa de tres polos sin convertidor ni uno europeo.tengo que comprar uno aparte no voy a desmantelar toda la fuente y cableado por un cable pero yo no lo comprarÃa si no viene con el europeo.estafado
Mahmoud Alshaghab –
works as expected
nick –
Perfetto
cheval christophe –
pour info trés bonne alimentation avec toute les options possible en cablage par contre la prise secteur est un modéle UK ce qui n est pas precisé dans l annonce aprés juste a changer celui ci
Bu7md –
It comes with only two 8 pin outputs one cable splits into two 8 pin and the another cable normal 8 pin and it has one new gpu output PCIe 5 for the new gpuâs . The cables looks nice and easy to adjust and install.Itâs small it can fits almost all cases easily.