On 2014-09-27 15:30, Ian Kelly wrote:
On Fri, Sep 26, 2014 at 12:53 PM, Abohfu venant zinkeng
<vice...@gmail.com> wrote:
This site was written by a person (in 2009) who had considered this
amazing trend. He collected a lot of data about hard drive capacity
and price. The formula he extrapolated by using the data he found
is
cost per gigabyte = 10-0.2502(year-1980) + 6.304 where year is the
year for which the extrapolated cost was desired. This formula is
based on data from 1980 to 2010.
A nice illustration in the perils of extrapolation. Per the formula,
hard drives should be $0.006 per gigabyte now. I don't see anything
on newegg.com for less than $0.03 per gigabyte; the best deals appear
to be at the 2 TB level. And we're only 4 years out of the data
range.
It also seems odd to quantify technical advancement in a way that is
easily affected by fluctuations in the strength of the US dollar.
I once did a calculation of my own about the cost of RAM.
In 1981 the BBC Micro was released. There were 2 versions, model A with
16K and model B was 32K. The price difference was £100, so that's £100
for 16K of RAM.
Today you can get 16GB of RAM for about the same price.
If you'd wanted that much RAM 30 years ago, it would've cost you £100m!
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