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This is a newer version of the affordable CX650M PSU which is one of the most popular mid-range, 650W semi-modular power supplies. The improvements seem to be primarily the improved appearance of the case and the upgrade from a sleeve bearing to a rifle bearing fan. Efficiency is better than 85% in a range from about 150 Watts to 500 Watts (at 120V). In this price range the efficiency looks a bit like a bell curve (it's not linear). It appears that the internals have changed a wee bit as well as the case in this update. Its a solid build with Corsair specific design. The components are pretty decent which means better life at higher temperatures. One of the chip changes is a Power Integrations TNY290PG Off-Line Switcher. 5 year warranty. The 120 mm fan is quiet. At room temp, using my laser tach, it clocks in the 600's till above around 300W. Then it ramps to around 2000 RPM at 600W. Good noise profile unless you run it hard. The older version would bottom out in the 800's. No change in cables or the 140mm case depth from the last model: two sleeved, blacked-out native cables, 5 flat ribbon-style modular cables of decent length with 115mm between the SATA connectors and 100mm between the molex. Nice warning on the case about using Corsair modular cables (modular cables tend not to have standardized plugs on the PSU side).

comes with white cables PCIE 5.1 ready

packaged well comes with tons of cables

-Great Power delivery -Great Build Quality

Confidence in rock solid performance

The product works as intended, delivered on time, and was super easy to set up in my case. The PSU does not overheat and the fans are quiet.

Excellent power output

came a week before expected so shipping was perfect. the psu is perfect but my own fault I didnt math it up right to figure out my power needs maxed out so I need to get a few more watts but seller is on point for perfect condition and delivery hoping they have a couple slightly more wattage

Just had a nearby lightning strike and lost power for a split second, but my computer was fine and stayed on with no issues. Hold-up time definitely works as advertised. The universal cables make building with this so easy. No more trying to reach ports at the far end of the PSU when you want to upgrade a device, you can just take them all out, and just redo it without worrying about what goes where.

Received my order allot sooner than the day promised, inspect and installed, works great, very pleased with my purchase. Thank you for your business, much appreciated.

Thank you for replacement, came in today in a very timely manner

Runs quiet and cool. Received everything as advertised. No issues with my computer running for 8-12 hours a day.

- High efficiency - 850W in SFX (not SFX-L) form factor - plenty of power - Fully modular - Silent - 12 pin GPU power connector for 4070ti or similar

While gaming eating up ~100w for the CPU and ~300w for the GPU I rarely see the power supply fan spin because, presumably, it doesn't need to. That's pretty nice.

1300w, native atx3.0

Modular, hybrid fan mode, atx 3.0 and 12vhpwr. Platinum efficency, screws included included everything you need and more for future upgrades.

- Looks and feels very high quality. - Only 15cm x 15cm - Totally quiet, no coil whine

First time buying BeQuiet. Very sturdy and well made. Modular design is great so you only use what you need. So far it is reliable and no problems. For me and my build the cables are of sufficient length.

- Incredibly easy to install - Worked first try without any fuss - Cables click into place satisfyingly but are still removable without breaking your fingers