Noctua NH-L9x65 @ techPowerUp
 

Pint-sized and full of pep, the Noctua NH-L9x65 takes an already solid design and scales it up. Made with compatibility in mind, it keeps clear of memory and first expansion slot while offering a quieter alternative to stock coolers. With the quality you expect and the low noise output you desire, can the NH-L9x65 deliver on performance?

http://www.techpowerup.com/reviews/Noctua/NH-L9x65/