Hard to find a CPU cooler

I'm finding it hard to find a cooler that will fit without blocking any RAM slots. I currently have Freezer 7 PRO Rev. 2 · CPU · Cooling · ARCTIC (http://www.arctic.ac/en/p/detail?sArticle=4.%3F) which I've used for about a year. I used Corsair Vengeance RAM using all 4 slots on an Asus P8Z68-V Pro mobo. The cooler at the moment is close to flush against the RAM. I'm looking for a new cooler...