title_body: Kindle vs Kindle paperwhite, is the resolution really important for eyes?
upvoted_answer: Here's a comparison of 300 ppi (Voyage, Oasis, 2015 Paperwhite) vs 221 ppi (2014 and earlier Paperwhite) vs 167 ppi (Classic Kindle).
  
  
  
  Actual dimensions seem to be
  
  
  1072 x 1448 (300 ppi)
  758 x 1024 (221 ppi)
  600 x 800 (167 ppi)
  
  
  The 300 ppi can legitimately claim to be nearly indistiguishable from paper to my eye, once you factor in the natural fuzziness of eInk and the 16 shades of grey.