The NH-C14S takes the already great design of the NH-C14 and refines it to a new level. What does the NH-C14S bring to the table? It gets the job done with a single, more powerful fan, and the new offset of the fin stack provides clearance for the first PCIe slot on your motherboard. The C-type design gives you a much lower profile that lets you build your system in most HTPC-style cases. You still get the options of using either Low Profile mode or High Clearance mode. And of course, all that air the NF-A14 moves through the cooler gets directed down across the RAM modules, VRM, and other motherboard components. That amounts to extra cooling for free. The SecuFirm2? mounting system is just the greatest thing. Installing a cooler really can't be much easier. It really needs to be an industry standard in my opinion.