The Arctic Cooler Pro is good product and it's well priced but I would go for another heat sink, especially for a Quad. I like the Thermalright Ultima, it's relatively compact compare to other top end HS but with the right fan it performs mostly on part with them. If you don't mind a huge heat sink, Thermalright 120 extreme or Tuniq tower are excellent choices. Also, many people like the Zalman 9700. Don't be suprised, all those heat sink are more expensive than the Arctic cooler.