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If my 6" Sony had a 100000 dpi display, it would contain just over 166 x 10^9 pixels. My desktop has 8x10^9 bytes of RAM; about 20 times less than that if it was grayscale. I'm thinking such a device would be really expensive and have a very slow refresh time. We're just not ready for those kinds of resolutions. But figuring out what kind of resolutions we are ready for is interesting. So, what dpi is reasonable considering current video/memory bandwidth/battery technology?
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