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Corsair

CORSAIR RM Series (2021), White, RM850, 850 Watt, 80 Plus Gold Certified, Fully Modular Power Supply

    • Based on 2,143 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Feb 16
Order within 16 hours and 47 minutes
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Color: White


Size: 850 Watt


Style: RM


Features

  • Fully modular, so you only connect the cables your system needs.
  • Triple EPS12V connectors for full compatibility with modern graphics cards and motherboards.
  • A 140mm rifle bearing fan with a specially calculated fan curve ensures that fan noise is kept to a minimum, even at full load.
  • Zero RPM fan mode for near-silent operation at low to medium loads.
  • Industrial-grade, 105C-rated capacitors deliver solid electrical performance and reliability.

Description

CORSAIR RM Series Fully Modular Ultra-Low Noise Power Supplies deliver consistent 80 PLUS Gold efficient power to your PC. With triple/dual EPS12V cables and four PCIe 8-pin power connectors, RM PSUs have all the connections needed to power today’s most demanding PC upgrades. Industrial-grade, 105°C-rated capacitors deliver superb electrical performance and reliability, backed by a ten-year warranty.

Model Name: RM850


Brand: Corsair


Compatible Devices: Personal Computer


Connector Type: PCI Express


Output Wattage: 850


Form Factor: EPS12V


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 6.3 x 5.91 x 3.39 inches


Item Weight: 1.65 Kilograms


Brand: ‎Corsair


Series: ‎RM850


Item model number: ‎CP-9020232-NA


Item Weight: ‎3.63 pounds


Product Dimensions: ‎6.3 x 5.91 x 3.39 inches


Item Dimensions LxWxH: ‎6.3 x 5.91 x 3.39 inches


Color: ‎White


Manufacturer: ‎Corsair


Country of Origin: ‎China


Date First Available: ‎June 22, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Feb 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • beautiful colors and cables.
Color: White Size: 850 Watt Style: RM
This power supply is awesome. It does its job beautifully and the white cables look really nice. It's also super quiet, which is important to me. I'm happy with this purchase and would 100% Recommend.
Reviewed in the United States on January 3, 2025 by Renny
    • This PSU is killer!!
Color: White Size: 750 Watt Style: RM
Review Image by Matt The Man Matt The Man
Review Image by Matt The Man Matt The Man
The media could not be loaded. Just finished my first PC build and couldn't be happier Build Sheet will also be a review (same review posted on each item for simplicity Case: NZXT H5 Elite The case has a wonderful design that is elegant and sleek the air flow is amazing considering the size. This case comes with X2 140MM RGB DUO NZXT Fans and an RGB Controller, over all 5/5 zero issues. ( This was not purchased on Amazon but as an open box at Best Buy (saved 45 bucks) PSU: Cosair 750w modular Honestly not much to say Cosair makes great products and this fits that bill!! All the wires you could possibly need for a 750w system, definitely has great vaule and looks 5/5 MOBO: GIGABYTE X670E It can be difficult these days to find a white motherboard, but the X670E definitely fits the bill. The board looks great and the built in RGB next to the panel connectors is awesome. This board has 4 NVMe slots Which is great for heavy storage of either games or other files. The GPU Pcie slot is also reinforced to help reduce some of the bigger 40 graphics cards from sagging. Definitely would recommend 5/5 CPU: AMD Ryzen 7700x Overall, a great CPU not really much to say it's a 16 thread 8 core CPU that pairs very well with the 4070 T.I.Super The AM5 design ensures that support for this specific CPU will be around for a while. Some people say the CPU gets hot on under load. I have yet to see any instances of that. 5/5 GPU: Aero OC 4070 Ti Super (16GB) The look and design of this GPU fits my build exactly the way I wanted it to the little R. G. B sign that's on the front of the graphics card. It's a nice touch. This is the OC Addition, which is unlocked from factory to enable overclocking, but with the 16 GB of V.Ram that's on this graphics card with it being the T.I super. overclocking is not required for games Just quite yet, maybe in the future It will but that's what I bought this so I'm semi future proof. 5/5 Ram: T Force RGB DDR5 6000mhz (32GB) Again, sort of like my CPU not really much to say here. The R GB is controllable through the gigabyte control app. Once you set up your p, c, so you could set any custom color and sort of wave pattern that you like. DDR 5 is definitely the way to go nowadays. With the increase speed that you can get on larger sets of Ram. These Ram sticks have a really nice. Metal shell casing on it, which also acts as a heat dissipator which is really great because these chips can get a little hotter at the higher speeds but overall no issues and the RGB looks great 5/5 CPU Cooler: Noctua DH15 Not much to say here.This is the best air cool.Ed around to market the rise in 7700X CPU Runs a little hotter than most other Amd Chipsets but this cooler has zero issues keeping it under control 5/5 Secondary Display: WOWNOVA 5" Computer Display I was entirely impressed with the design look and feel of this 5 inches display .It comes preloaded with presets that you're able to customize to your liking and you can upload your own as well!!. This is a very nice aesthetic touch inside the computer and also allows you to keep track of whatever information you're looking to keep track of as where it comes to the system functions of your pc Storage: Samsung 970 Pro (500GB) (STRICTLY FOR OS) Storage: Samsung 980 Pro (2TB) Game Storage This is pretty self-explanatory and the NVME storage or PC i.e. Gen. 5 storage is some of the best way to store games and run operating systems from .All other storage forms are a thing that have passed.This is going to get you the max performance when it comes to storing or running your OS bought at best buy Fans that came with case: X2 140MM NZXT DUO RGB X1 120MM NZXT Toliet Fan These fans came with the NZXt H5 elite.I've had 0 issues with them.Their great fans That NZXT makes a great product to keep positive airflow Fans Purchased : X4 120 MM NZXT DUO RGB I purchased all 4 of these on Amazon as open boxes as these specific fans are not in stock with NZXT currently, the open box was in very good shape and the fans have been functioning with 0 issues very impressed with the open box item I received this time. The RGB on these fans are absolutely amazing. One thing I will note though is NZXTs RGB controllers only control 3 fans per controller. So for every 3 fans that you have in your case, you will need an additional controller. TOTAL COST $2348 Bench Marks MW3 Max settings Consistent 160 to 180 FPS @1440P SPIDER MAN REMASTERED/ God Of War Ultra/Max Settings Consistent 130 FPS@1440p ... show more
Reviewed in the United States on April 6, 2024 by Matt The Man Matt The Man
    • Great buy! Easy to install everything. Idiot proof :P
Color: White Size: 850 Watt Style: RM
I honestly know nothing about building pcs nonetheless fixing one. My PSU went out after exactly 2 years of having it (Thanks CyberPower). I was extremely intimidated but last night I sat on the floor with my pc and cut the zip tied off and unplugged everything that needed to be unplugged with the old PSU and I worked on the Corsair PSU one by one till I had it all connected. Took about an hour for me mostly because I was being so careful with everything. Everything clicked in perfectly and was a breeze setting up. It even came with zip ties which was nice because I had to cut the previous ones off. I plugged it in and pushed the button and WA-LA it turned on! I've been on it all day today and it's running great. It's also a lot quieter than the one that came with my pc originally. Highly recommend! I've been using a Corsair headset for years so I knew I could trust Corsair again with this. I got the 850w for $109. Well worth the cost and I love that the wires are white which matches my pc case ;) ... show more
Reviewed in the United States on July 22, 2024 by Jessica
    • works and is quite
Color: White Size: 850 Watt Style: RM
corsair makes some great products and this is one of them. its quite and works great
Reviewed in the United States on January 9, 2025 by vernor reece
    • Quality!
Color: White Size: 850 Watt Style: RM
Works perfectly. Powers my rig flawlessly and plenty of cables to go along with it. Fan is nearly silent only turning on when the power supply is under load, even then it’s almost silent.
Reviewed in the United States on August 20, 2024 by Brandon C
    • A PSU for my white PC build
Color: White Size: 850 Watt Style: RM
I got this for 3 main reasons: 1. It's Corsair, and it's a gold-rated PSU. 2. 850W gives me plenty of room to upgrade my new PC in the future. 3. It's white, the cables are white, and my new PC is a white build with black accents, so this is perfect. If you're new to PC building, you can cheap out on so much of the build if you need to save money, but DON'T cut corners on the power supply. I splurged a bit more than I normally might on this one, but honestly, it's well worth it. ... show more
Reviewed in the United States on January 21, 2025 by RB
    • Would have been 5/5 if not for mislabeling.
Color: White Size: 850 Watt Style: RM
This is an excellent power supply and the sleeved white cables simply look so clean and perfect for a white build like mine. I am giving it 4/5 starts due to mine only coming with 2 PCIE GPU cables. But advertised says 4? Am I missing something? Otherwise, it's flawless.
Reviewed in the United States on August 25, 2024 by Drew
    • My go to PSU
Color: White Size: 850 Watt Style: RM
Use this for all my customers builds running 3070/4070s! Great PSU. I use it in my personal rig!
Reviewed in the United States on January 9, 2025 by Oscar C.

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