To start off installation you are going to want to clean your processor off if you are replacing your current CPU cooler with the NH-U14S. We will be installing this cooler on an LGA 2011 system. First thing is first go ahead and install your thermal paste. Noctua does include their own NT-H1 thermal compound. Once installed install the four included mounting screws to the LGA 2011 bracket. Then install the CPU cooler mounting bracket as shown in the third photo below.
Now you are ready to install the heatsink. Go ahead and remove the fan and line up the heatsink with the knobs on the CPU mounting bracket. Finally just screw it into place to secure it. As you can see there is more than enough room for clearance when it comes to your RAM modules.
Now just put your fan and you are good to go. Noctua was nice enough to send us a second NF-A15 PWM fan. To install it just take the included extra mounting wires and attach them to the fan. Then go ahead and just attach the fan to the other side. The NF-A15 PWM fan also comes with a Y-splitter so you can connect both fans to the CPU fan header on your motherboard. Even with both fans attached you can still see there is room for any size RAM modules.