I've bought/build a few of these now, replacing much larger computers. The i5 is plenty fast for 90 percent of what people do on computers. My particular use is in an audio production studio. Added components: The Samsung 840 m.sata, 8 gigs of memory, and the intel 7260 wireless / Bluetooth module. Put them together, installed windows, and all worked well.The computer is very stable. Windows 7 works great on one, I have Windows 8 on another. Intel supplies the drivers and as of mid June 2014, everything seems very stable. It's quiet and runs cool. If you have something intensive (editing/encoding video, etc.) you will hear the fans spin up a bit. Under most normal workloads you don't hear it. USB 3.0 works flawlessly for me with the NUC; that has not been my experience with some other desktops.The monitor output feeds a Monoprice 2560 x 1440 monitor via displayport. The only issue I've had is sometimes bios won't display on this monitor. I hook it up to a lower resolution older dell monitor via hdmi and I can adjust bios.This seems like the future of desktop computer for many people. You can attach it on the back of many monitors. It's so small you can pop it in a bag and take it with you if needed.Very impressed with what intel is doing with this series. Hopefully an i7 is on the way this year or next.