NES Mini teardowns have begun, chips identified
Ars Technica 2016-11-05

Enlarge / Warning's printed on the underside... and I see a screw to possibly get into the controller ports... (credit: Kyle Orland)
Reviews and impressions of the NES Mini hardware began to circulate this week (including our own from yesterday). The next step, of course, is unscrewing of the nostalgic little box to see how it ticks—and whether its limited functionality might ever be expanded, either officially or by hackers.
The first major image of the NES Mini's motherboard hit the Internet thanks to Gamespot Senior Reviews Editor Peter Brown. His shots were shared and scrutinized by members of Reddit's Nintendo community. Code numbers on chips led those users to determine that the system (which emulates NES games and displays them on 1080p displays) is primarily fueled by an AllWinner R16 "system-on-chip" solution.
If the chip works as advertised by Chinese manufacturer AllWinner, as opposed to being customized for the NES Mini in any way, then it includes a dual-core Mali-400 GPU which could be powerful enough to pump out as many as 55 million triangles per second (in its 28nm, 500MHz variant). There's also a quad-core ARM Cortex-A7 CPU, which has been clocked at 1.2GHz in smartphones, as well as 256MB of DDR3 RAM and 512MB of NAND flash storage.