MadShrimps posted a review on the Corsair Vengeance Low Profile 16GB 1600MHz C10 Dual Channel DDR3 Memory Kit A quote from the article:

Thanks to the extra clearance the Vengeance LP memory kits offer, we are able to mount even bigger CPU heatsinks or accommodate them inside cases with cramped space. The modules have different colors depending on their technical specifications and as far as we have seen the stock speed can be raised a bit more in order to benefit from more bandwidth.

 Corsair Vengeance Low Profile 16GB 1600MHz C10 Dual Channel DDR3 Memory Kit Review @ Madshrimps