I bought this because my CPU cooler was dying and I needed a quiet, futureproof cooler that would support a variety of CPU sockets.
The NH-C14 cooler is far bigger than any cooler I've ever used before. After reading some of the reviews, I was concerned about whether it would fit into my case, but it turned out to be a non-issue.
Noctua has a motherboard/CPU socket compatibility list for this model, located here:
Be sure to look for your motherboard/CPU on that list. To be safe, check inside your case and see if you have any components (e.g. a large video card cooler) that might get in the way as well.
To install this, I had to remove my motherboard from the case in order to mount the back-plate underneath the CPU socket. I kept my setup in "Dual-Fan mode", which means that both of Noctua's NF-P14 140mm fans went in alongside the heat-sink. For thermal paste, I opted to use an Arctic Silver cleaning/paste kit: Arctic Silver 5 Thermal Compound 3.5 Grams with ArctiClean 60 ML Kit
Overall, the install took about a half hour, mainly because I was being extra careful with where I put all my motherboard cabling. The trickiest part turned out to be screwing the motherboard back in because my top-mounted power supply and the Noctua cooler were crowding the top. I had to unscrew my power supply in order to get the last motherboard screw in.
The fans spun up and reached operational speeds at first boot. This cooler is very, very quiet. After checking the temps in BIOS, this unit is keeping CPU idle temps consistently at 26 - 27 C. My CPU no longer locks up under heavy load while I'm processing audio/video. Problem solved.
I highly recommend this CPU cooler, especially if you're planning to do a motherboard/CPU swap in the future, and need a silver bullet solution that will keep your CPU cool, and your room quiet, for years to come.