Scythe Ashura @ techPowerUp
 

The Ashura is breathing new life into Scythe's CPU cooler lineup. Featuring an offset single tower design, this heatsink offers enough clearance even for the tallest modules in all four memory slots. With a price below $50, it is also quite affordable, while providing decent noise levels and good cooling.
http://www.techpowerup.com/reviews/Scythe/Ashura/