Corsair RM850x 80 PLUS Gold, 850 Watts, Fully Modular ATX Power Supply Unit - Black

Product Information

your computer faster and consume less power with support for Modern Standby sleep mode. Zero RPM mode ensures virtually silent operation at low and medium loads. Fully modular

The RM850x achieves high performance with 115V and a top place among Gold 850W PSUs, with 230V. The last time I reviewed the RM850x for Tom’s Hardware, the 850 G7 hadn’t been released, and as you can see on the 115V performance graph, it has a slight lead. I should also point out that I haven’t used the new scoring algorithm for the above graphs because I don’t have data for all PSUs, especially some older ones. The new algorithm considers more factors so that the final scores can change. Epilogue The RMx line has a deserved reputation for premium ripple suppression. For this reason, Corsair adds cable-integrated capacitors to the main ATX, CPU and PCIe cables. Supports Modern Standby sleep mode for extremely fast wake-from-sleep times and better low-load efficiency. The Corsair RM850x is a computer adapter with a total power output of 850 W. It features a single fan with a diameter of 135 mm to ensure efficient cooling. The adapter is equipped with multiple power outputs for different components.

Vampire Power

PLUS Gold Certified: High efficiency operation for lower power consumption, less noise, and cooler temperatures. Resonant LLC Topology with DC-to-DC Conversion: Provides clean, consistent power, reduces coil whine for quieter operation, and enables use of more energy efficient I expect Corsair to update the RMx line soon, offering, among others, 12VHPWR connectors and ATX 3.0 compatibility. If you are not in a hurry to buy a new PSU, you could wait, but if you need a new unit now, you should include the RM850x in your buy list. Other suitable alternative options are the EVGA 850 G7 and the Seasonic GX-850. The Thermaltake GF1 850W is also a good choice.

After almost three years in production, Corsair decided to update its popular RMx line. There are again five members with capacities ranging from 550 W to 1000 W. All are fully modular, and the OEM is still Channel Well Technology. Listed below are the crucial changes over the RMx 2018 units with the RMx 2021 revision: I cannot hide it; I am a big fan of the Corsair RMx PSUs because they offer high performance and reliability at a price that won’t empty your wallet. Currently, the RMx members are among the best in the mid-price category, in every Wattage, from 550W up to 1000W. The OEM of this line is CWT, which also made the previous RMx models, and the exterior design allows you to distinguish the new RMx units from the older ones easily. The triangular perforations on the punched fan grill and the front exhaust are characteristic of Corsair’s fresh PSU designs. The Corsair RM850x is designed to provide reliable power to various computer components. Its specifications indicate that it can handle demanding power requirements for high-performance systems. The presence of a single fan with a 135 mm diameter suggests effective cooling, which is crucial for maintaining stable performance and preventing overheating.

Typical Apple Innovation…

The RM850x is rated Gold by both Cybenetics and 80 PLUS, and it also has a Cybenetics A- rating, meaning that its average noise output is within 25-30 dBA at normal operating temperatures (28-32°C). A more aggressive fan speed profile drives the magnetic bearing fan that the new model has, but still, the PSU’s noise won’t trouble you under normal conditions unless you are super sensitive.

Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation. A 135mm ML fan utilizes a magnetic levitation bearing and custom engineered rotors for high performance, low noise, and superior reliability.

Case will likely be the Crystal 280x or some sort of a Mid Tower. I do need to upgrade as I only have a Fractal Design Nano S which only fits an ITX. The RM850x is a definite improvement compared to its predecessor, offering ALPM support and a better fan. The new RM850x is noisier at high RPM, so overall noise output has notably increased. Still, you cannot call the new RM850x loud, but it lost the title of the quietest 850W Gold unit that its predecessor had. I prefer the ML fan over the FDB one since it is more reliable, especially at high operating temperatures. CORSAIR RM850x Series power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM850x PSUs use only As you can see, the trio can be plumbed in concurrently, alongside two runs of dual 6+2-pin PCIe for a couple of high-powered graphics cards. Having a total of 14 SATA feels overkill in 2021, though.