Originally Posted by WillysJeepMan
The PPI spec is the latest marketing gimmick. They have to do something to steer people from one device to another.
Not true. There's all the difference in the world between the 300+dpi of my iPad 3, and the 150-odd dpi of the older iPad 2. It makes a tremendous difference to the readability of the screen, especially for text, which the higher resolution makes it comfortable to read at a much smaller size.