Perfect, quiet, fast and powerful is a fast and powerful server. Be careful to follow the intel guide to install Ubuntu on the NUC because you have to upgrade the bios and disable certain options of the bios if not the NUC does not start even after installing Ubuntu.
FYI, I added a 64GB mSATA SSD drive, 8GB of RAM and a Vengeance Wireless Intel (Bluetooth + Wi-Fi).