[M] Crucial Ballistix Tactical 16GB DDR3 PC3-12800 Low Profile Memory Kit Review
 

The new Ballistix Tactical memory kits from Crucial are also available in Low Profile format, which means that they have lower height for permitting a better clearance in systems which require it and also operate at a lower voltage (1.35V).

http://www.madshrimps.be/articles/article/1000387/