One novel aspect of the Havik 120's design are the edges of its aluminum fins. Each fin has a blunt knife edge which helps ease airflow through the aluminium fin stack by decreasing air flow resistance. If you look really closely at the Havik 120, you'll see a 1mm edge taper from 0.5mm down to about 0.25mm. Gigabyte tried a similar technique in 2006 with good results. Xigmatek have rolled this technique out on several of its own-brand heatsinks like the Prime SD1484 which Frostytech recently tested.