MG20
MG20 is an unknown Nvidia GPU and SoC that was intended to be used circa 2006 on the Nintendo 3DS (codenamed "Centrair") before Nintendo decided to change the system's GPU to a Digital Media Professionals "PICA200"-based fixed function GPU (at some point between 2007 and 2009). It may be related to the "GoForce" line of chips, but these are not Nvidia designs, instead being created by a company Nvidia acquired called MediaQ and anyway are simply graphics chips rather than full SoCs; it may also be a predecessor to the original NVidia Tegra (which was released in 2008), as they had the same project lead.