if you are buying this for performance, dont buy it. CM V8 GTS is just for the fancy look. even CM Hyper 212 EVO is better in price/performance wise. in that price u'll get a better Liquid Cooling heatsink. "Corsair H80" or "Antec Kuhler H2O 920".
This CPU cooler is without doubt more for them badass looks than anything else. That doesn't mean this won't perform. I am running my i5 4670K at a very comfortable 50 degrees Celsius under load and 30 at idle. (Room temp: 24-26). Installation was a bit of a pain but not too much of it thankfully if done right. Remember to remove the fans and install the RAM before installing this cooler. And do it outside of the box for the most hassle free installation.