The NH-D14 SE2011 is essentially a standard NH-D14 outfitted with the new SecuFirm2 mounting system for LGA2011. If you aren't familiar with this heatsink, it utilizes six heatpipes in an asymmetrical dual radiator layout. The heatsink is cooled by a 120mm fan as well as a larger 140mm fan, but we will get to that in just a bit.
As you can see from the photos of the retail packaging, not much has changed with Noctua's presentation. The signature white / black / brown heatsink package reveals plenty of specifications on the rear while the front of the fan box opens to reveal a clear cutout so you can see the actual fan and accessories within.
Specifications for the NH-D14 SE2011 and NF-F12 PWM fans are as follows, borrowed from Noctua's website.
And for the NF-F12 PWM...
Notice that the heatsink includes a slightly different 120mm fan, the NF-P12. Despite a faster max rotational speed, the NF-F12 only produces a tiny bit more airflow and is a few decibels louder. The newer fans also use second generation SSO bearings and a custom designed PWM IC for better automatic control. Note that all items carry a standard six year warranty - very nice.
Let's move on and have a closer look at both the heatsink and the new fans.