Noctua NH-P14 FLX 140mm Silent Computer Cooling Fan Unboxing & First Look Linus Tech Tips
This fan is silent AND deadly. It's a 140mm fan that fits into a 120mm mounting spot. That means that you get to spin at even lower RPM than traditional 120mm fans, move a ton of air, and you don't have to get a new case that supports 140mm fans!