Quote:
Originally Posted by davidfor
Are you sure of that? Doing that probably means the device spends more time rendering each page. That's more CPU per page, and it probably means more "ink" on the page. Which might mean it's more expansive to draw that page.
And I have no idea. It's one of those things I wondered about when the larger screens came out. If the same apparent font size is used on a 6" ereader and a 7.8" ereader, assuming all else is the same, which uses more power?
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Quote:
Originally Posted by DuckieTigger
Without considering light, they should use the same even if a full page refresh with flash occurs every same amount of pages. With light, the bigger one probably uses more as thereis so much more extra space constantly lit.
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To be a bit more specific, with the light off, the 7.8" reader uses 69% more power per page turn because it has 69% more pixels, but it needs 1/1.69 as many page turns, because it has 69% characters per page. Justification, paragraph length, and chapter length will cause these ratios to vary. That is, the cost per page turn ratio is pretty much fixed, but the total number of page turns per book for each reader will vary.
So, as DuckieTigger writes, on average, it is a wash, but YMMV.