Review on Noctua NF-P12 redux-1700 PWM: Optimized 4-Pin Cooling Fan for Exceptional Performance at 1700 RPM (120mm, Grey) by Nate Nelson

Noctua is known for good fans in two ugly colors. I needed a pair of fans, so I decided to try two NF-P12 Redux fans that were designed to run on air pressure. This is one 1700rpm fan, the other is noctua NF-P12 redux-1300 PWM high performance silent 120mm fan, ideal for PC case, CPU heatsink and water cooling heatsink, award winning premium Model in affordable gray reduction. Two shades of gray instead of brown and brown. Colors aren't the best, but better. They don't have rubber feet. In my case I can't say it matters. They don't hop around. Both fans are very similar. They come with silver screws instead of the black ones everyone else is using now. Speed Test: If I set them below 25% they still run at their minimum speed. 1300s run from about 350 to 1300 rpm, 1700s from about 500 to 1680 rpm. Sound: At or below 1000 rpm they are silent. At 1100 rpm I start to hear them. At 13:00 they can be heard clearly. At full speed of 1680 RPM on this fan, it makes a lot of noise. Conclusions: If you can't control the fan speed and it gets stuck at full power, I recommend a 1300 RPM model. As long as you can set a custom fan curve, I would suggest buying a 1700 RPM fan. It's only 150 rpm faster at low revs, is still quiet up to 1000 rpm, can be comfortable up to 1300 rpm but can hit almost 1700 rpm when needed. I wonder if the extra cost rubber pads improve the sound at top speed.