oebaca,
I would say about 95% of all these cheap Chinese players use an Actions chipset, the rest use a SigmaTel or Sunplus version. These player use a single CPU to process all the players functions and are not very powerful (30Mhz I am told, but can not confirm) which is why they are only able to perform simple tasks one at a time and can only process video at lower frame rates. I doubt they have the power to run NES games.
The next step up is the Rockchip which will multitask and support .avi video at higher frame rates.
The dearer players like Meizu, Teclast, Sansa and Anal etc ( I am sure it has a better translation in Chinese) use dual chips one to run the players main functions and a dedicated Audio chip which gives them better audio quality and options but are 2 to 3 times the price of the Action based players but a better long term investment.
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