Xigmatek Dragoon and Cuirassier Memory Heat Spreaders Review
 

Memory cooling is one of those things that most people leave untouched. There may be several reasons for this: the foremost being that the stock heat spreaders on most memory modules will be sufficient for most user’s needs. But occasionally, there will of course be users who need to push their memory to the limit – particularly overclockers and gaming enthusiasts. These users will therein need some hardcore cooling for their precious RAM. With that in mind I introduce you to the Xigmatek Dragoon and Cuirassier heat spreaders.
http://tech-reviews.co.uk/reviews/xi...eat-spreaders/

if LN2 cooling on memory doesn't change overclocking potential... we pretty much can conclude what difference an air cooled heatsink will make ;)