Corsair RMX White Series (2018), RM850x, 850 Watt, 80+ Gold Certified, Fully Modular Power Supply - White, 80 PLUS Gold (CP-9020188-NA)

My husband’s job is in the computer engineering field, and we own many, many computer-related items. He saw this and had to have it. He said he wanted it to replace the OEM power supply in an eight year old Dell Optiplex 790 that has been running FreeBSD 24/7 as a lightweight personal server. He stress tested it for two weeks with regular load plus power intensive CPU and hard drive loads using the stress-ng utility and observed no problems or excessive noise. My husband really likes that this has modular cables because there are no unused/spares to tie up out of way or to block airflow. This supply’s connectors are tight and have a thumb-clip to hold it/them in place. When powered-on, the fan spins up then turns off in less than a minute in what Corsair is calling Zero RPM fan mode. However, if a high CPU or hard drive load is imposed on the system the fan spins up again. We like this but would caution that this could cause localized excessive heat (e.g. hard drive) inside any computer cases that are designed with the assumption that the power supply fan is always moving air through the case. When it is on at what is assumed full speed, the 140mm fan is large enough to move a good volume of air fairly quietly. As it isn’t listed what come with this power supply, it includes: 1 modular 24-Pin ATX motherboard power cable, 2 modular cables, each supplying power to three SATA drive power connectors, 1 modular cable that supplies power to four IDE (a.k.a 4-Pin Molex) drive power connector, 2 modular cables, each supplying power to two 6/8 combo PCIe power connectors, 2 modular 8-Pin CPU power cables (EPS12V), 4 black case screws, and 10 black tie-wraps. We are both very happy with this, and I highly recommend it!

Excellent build quality and easy to build with!

Plenty of room to upgrade and always been reliable

Took 3 weeks before they shipped the item even though it was CONSTANTLY in stock

Excelente producto, embalaje y rendimiento

I carefully installed this PS, but the MB wouldnt fire up. Installed an old PS and it worked. I checked it with a PS checker, no 12 volts. Returned it to Amazon and got a refund quickly.

My PC has entered the forced upgrades phase of life. The no-name power unit gave up after about 4 years. It was a 600w. The Corsair fit perfectly, came with small screws/hardware, and most importantly, a selection of new harnesses that had everything I needed. Color matches case too. Im real happy with it.

Item not working.

I was upgrading to a 3070 so I needed a new power supply. This one seems to run fine and no issues yet. My problem is with the cords, like a lot of others on here. They weren’t necessarily too stiff for me, but specifically the two cord sets of 6+2 are impossible to get to plug in the best way.

Twice I have ordered this product and twice it arrived NOT WORKING. What kind of recycled garbage are they sending out? Do NOT recommend unless you like being charged for incompetence.