what is the difference between fire tablet 7 and 8?
Screen: The screen is the biggest difference between the two 2017 Fire tablets. The 7-inch model has a 1024 x 600 screen (16:9 ratio with 171 ppi) and the Fire HD 8 has a 1280 x 800 screen (16:10 ratio with 189 ppi). ... Also the Fire HD 8 supports HD video and the $49 Fire only supports SD video.