Looks like it is Allwinner R16 SoC - Quad A7 + MAli 400. https://www.pcper.com/news/Systems/NES-Classic-PCB-Pictured-Online https://www.pcper.com/news/Systems/

Looks like it is Allwinner R16 SoC - Quad A7 + MAli 400. https://www.pcper.com/news/Systems/NES-Classic-PCB-Pictured-Online https://www.pcper.com/news/Systems/NES-Classic-PCB-Pictured-... Wow - but I can see that it will be cheap.