On a large screen, PPI is not as important as on a smaller screen. On a 15" notebook, a ~100 ppi screen is perfectly fine and a larger ppi actually causes a fair bit of eyestrain due to the size of fonts, UI controls etc. Until we get a truly resolution independent OS (Snow Leopard maybe?), highly dense large size screens are not going to be the holy grail.
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On a large screen, PPI is not as important as on a smaller screen. On a 15" notebook, a ~100 ppi screen is perfectly fine and a larger ppi actually causes a fair bit of eyestrain due to the size of fonts, UI controls etc. Until we get a truly resolution independent OS (Snow Leopard maybe?), highly dense large size screens are not going to be the holy grail.
Hm, I have a 12" with 1400x1050, and its pretty eyestraining, and I'm only getting 145ppi?!
160 seems scary :(