Corsair RM850X 850-Watt ATX Modular Power Supply
- Fully modular design make PC builds and upgrades easy, as you need to only connect the cables that your system requires
- 850-watt power supply works well for gaming heads who want a reliable and consistent power flow
- ATX form factor permits simultaneous power supply to all the motherboard components while ensuring durable performance
- 135mm magnetic levitation bearing fan and custom engineered rotors offer increased performance, low noise, and greater reliability
- Resonant LLC topology with DC-to-DC conversion ensures clean and consistent power while lessening coil whine for hush operation, and also facilitates use of more energy efficient sleep states
- Reliable 105 degrees Celsius rated, 100% industrial-grade Japanese capacitors produce constant power supply
- Assists Modern Standby sleep mode for superfast wake-from-sleep times and improved load efficiency
- Zero RPM fan mode provides virtually silent operation at low to medium loads
- Two RMx Series EPS12V connectors permit new graphic cards and motherboards
- 80 PLUS Gold certified efficiency makes it low on power consumption and noise while offering cooler temperatures
- RMX (2021) Series ATX Power Supply
- Mounting Screws
- AC Power Cord
- DC Modular Cable Set
- Cable Ties
- Product Manual
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Of the 163 reviewers who responded, 148 would recommend this product.
Averages based on how reviewers feel this product performs.
- it’s DANG loud.- October 6, 2021
It works like a power supply should, but it’s unbearably loud—louder than all of my power supplies, louder than an ancient dell computer you’d see dime a dozen in elementary schools. the weird thing? It’s not heating up. Nothing seems to be wrong about it, the fans just go from super quiet in bios setup to maximum overdrive as soon as i get into windows. maybe i did something wrong? i used all the cords out of the box and tried as hard as i could to brute force all the power supply plugs as snugly as possible. If I’m doing something wrong, please give me your insight i just cant believe this power supply ended up sounding worse than my starter one from 2015.No, I would not recommend this to a friend.
- Bad choice for 3080/3090/miners– 2PCIe cables.- June 15, 2021
Was going to give it a 3 or so but honestly I can’t even manage that. This series is so unbelievable to me. Many downgrades from the previous rm850 and it is at this point 20 or so dollars more. Returning mine and waiting for the old 850 to ship. Main complaint is noise and a very strange cable layout. Be careful as other reviews have pointed out. They are now shipping with 2!! PCIe daisy chained connectors vs the 4 that they originally shipped with. Although there are 5 8 pin connectors on the PSU you have to bug Corsair support if you want to run a 3x 8pin card with dedicated cables. Strangely they ship with 3 EPS/ATX 12v cables that I can’t come up with any reasonable use case for.No, I would not recommend this to a friend.
- Had to buy this for my 3080ti- July 24, 2021
This was an unexpected purchase. Everyone said a 750W P/S was enough for a 3080ti but that would depend on your overall system config, as well as whether you're OCing or not. When I bought my 3080ti, it tripped the OC protection on my old P/S, and had to upgrade to this one. The biggest downside is that the 2020 model only comes with two PCI-E cables (vs. the 2018 model with three), despite what the packaging and modular ports say. If you buy a GPU that needs three PCI-E connectors and you don't wish to use the pigtails, you'll have to buy more cables from Corsair.Yes, I would recommend this to a friend.