True. So that limit doesn't exist anymore. I stand corrected. However this wasn't true when the N9 was out. On the other hand, comparing the E7 with the N9 I'd always take the N9 despite the artifacts and not-so-good color. 180, (even if they are more 'real') ppi is too low. With subpixels able to shrink more, we could have 800x480 rgb AMOLED on the N9 today, or qHD pentile. What would be best then given that 260ppi is not too low? How far can you go up the ppi count until you can't tell the difference? At extreme ppi's which one looks better? X ppi RGB or X*1.33 ppi pentile.