Included with the NH-C14 package are a multitude of accessories. This includes sets of power adapters with inline resistors, Noctua branded them as Ultra Low Noise Adapters, which reduce the speed (and thus noise output) of the fans. Screws and mounting accessories are included should you choose to use only one fan on the heatsink, and opt to use the other fan for something else. A tube of Noctua's NT-H1 thermal compound and a metal Noctua case badge round out the included accessories.
The included SecuFirm2 mounting system for AMD's AM2, AM2+, AM3, AM3+, FM1 sockets require the use of the original backplate for the retention bracket normally included with the motherboard. The Noctua mounting system screws into the backplate, then the heatsink is screwed onto the mounting system.
The included SecuFirm2 Intel mounting bracket is compatible with LGA1366, LGA1156, LGA1155, LGA775 sockets. The system uses the heatsink mounting holes around the CPU socket. Depending on which socket you have, there are three different screw positions in the bracket system. Available on request from Noctua is an LGA2011 mounting bracket.
Using the Intel SecuFirm2 mounting bracket set with LGA1155 spaced mounting holes on our ASRock Z68 Extreme3 motherboard, there were no clearance issues around the socket. Clearance wise, the Intel SecuFirm2 mounting bracket doesn't exceed the perimeter of space used by the stock Intel cooler.
When a fan is installed on the bottom of the radiator, the maximum height of installed RAM is 1.9 inches. This can accomodate some common third party heatspreaders that aren't too tall.
For those with more exotic varieties of RAM with tall heatsinks, you can remove the bottom fan, which gives approximately 3 inches of clearance. This should allow you to accomodate most, if not all RAM on the market. The only issue where you might have clearance issues is with memory cooling fans. But since the NH-C14 provides downward airflow over RAM slots, this becomes a moot point.
While the NH-C14 appears large from most angles, it's base is nice and small, so it shouldn't interfere with motherboard components when installed.
The NH-C14 looks huge when installed and viewed from the top. While it covers a large part of our test motherboard, ASRock's Z68 Extreme3 Gen3, there were no conflicts with any of our add-in cards or components.