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The Kernel Hacker's Bookshelf: Ultimate Physical Limits of Computation

The Kernel Hacker's Bookshelf: Ultimate Physical Limits of Computation

Posted Jun 19, 2008 10:44 UTC (Thu) by enodev (guest, #14913)
Parent article: The Kernel Hacker's Bookshelf: Ultimate Physical Limits of Computation

Why doesn't the author take the volume of a modern cpu or hard disk into account when
calculating the storage/calculation power of a current laptop? I mean the data storing volume
of a 2.5" hard disk platter is about 
(3.14*6cm^2*50um) = 6e-4 dm^2 ~= 1e-3 dm^3. So only 16 orders of magnitude to go... . Same
applies for the volume of a cpu die. Or do I miss something?


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The Kernel Hacker's Bookshelf: Ultimate Physical Limits of Computation

Posted Jun 19, 2008 17:22 UTC (Thu) by vaurora (guest, #38407) [Link]

In the original article, the author makes it much more clear that we are assuming nothing
about what the technology of computers in the future looks like.  In particular, we're not
assuming that the storage of the computer is compartmentalized into a small box containing
spinning rust-covered disks. :) All the calculations are based solely on the mass and volume
of the computer, with no assumptions about distribution.

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