Like I said the Yun does not and I would bet never will run Windows. If you can get Windows 10 to run on a 400mhz MIPS processor with 64mb of memory and 16mb of storage I would be genuinely impressed. I pointed it out because it's funny, like taking a picture of an iMac and slapping a Windows start menu on it.
Windows NT 3.1 ran on a 66Mhz with 16MB ram, the MIPS and Alpha versions that also existed at the time were incredibly fast if you could afford the hardware (I could not).
Theoretically, an embedded version of just the Windows kernel and basic services might fit that profile, if Microsoft were to resurrect a MIPS version. Also, Windows Phone runs on hardware that's not much faster.
