I joined this board for the Jetson TK1 wiki. I am a big fan of graphics, and therefore follow NVidia closely. My Jetson TK1 board shipped on April 30th - lucky, I know! I want to explore Vision works with a USB connected cam (Logitch C615). I am pleased with how well the board has supported a full-fledged Ubuntu KDE desktop. It actually feels faster than my i7 laptop which literally cost 10x as much (granted, the laptop has a nice screen, an enclosure, and keyboard :) ).
You can see my power and benchmarks for the http://www.phoronix.com/forums/showthread.php?99849-NVIDIA-Tegra-K1-Compared-To-AMD-AM1-APUs&p=416287#post416287. While perhaps the not most scientific, I did go through the trouble of patching into the DC line and using a decent multimeter. I also was able to compile Xonotic, which runs surprisingly well (71fps average on normal settings @ 1080p).