I replace my PC's fans every 2 – 3 years and when it comes to cooling my computer I always go to Corsair for both cooling my CPU with Corsair's closed loop water cooling kits or Corsair's case fans for system cooling.
These are pretty much the next generation of cooling fans and with today's advancement in technology, these fans do the job excellently.
They move a lot of air at lower speeds which in turn makes for premium cooling and quiet operation, they also look great for the gaming enthusiasts who like to show-off their hardware with their built-in LED lighting which can be controlled via lighting node fan hub and Corsair software.
Great fans, fantastic design, super quiet, perfect for my PC.