Soundwave on 15 July 2014
wspisel (sp?) on NeoGaf said that one of the lead engineers at NTD (Nintendo's tech division) used to work for Qualcomm, which makes the Snapdragon processors.
I think a ARM + Snapdragon duo is more likely, simply because that can probably beat AMD on price for performance. Snapdragon ships its chips in huge volumes as they're used in Samsung phones among other devices.
Something like a customized Snapdragon 808 or 810 for Nintendo?
