Re: Storage Cost Calculation

Date	2014-09-27 16:41 +0100
From	MRAB <python@mrabarnett.plus.com>
Subject	Re: Storage Cost Calculation
References	<CAH+Vmq=BO2TJvf-CUPuug_xFRGfhU7CUBSg41X40m-6eAgf-Sw@mail.gmail.com> <CALwzid=+wAxCbYD6fuVjh_O2Fkso+ZH1S7jibfefEwmfFwQ5Cw@mail.gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.14430.1411832704.18130.python-list@python.org> (permalink)

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On 2014-09-27 15:30, Ian Kelly wrote:
> On Fri, Sep 26, 2014 at 12:53 PM, Abohfu venant zinkeng
> <vicezik@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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Re: Storage Cost Calculation MRAB <python@mrabarnett.plus.com> - 2014-09-27 16:41 +0100
  Re: Storage Cost Calculation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-28 11:14 +1000
    Re: Storage Cost Calculation Chris Angelico <rosuav@gmail.com> - 2014-09-28 11:37 +1000
      Re: Storage Cost Calculation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-28 12:47 +1000
        Re: Storage Cost Calculation Chris Angelico <rosuav@gmail.com> - 2014-09-28 13:35 +1000
          Re: Storage Cost Calculation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-09-28 14:39 +1000
            Re: Storage Cost Calculation Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-09-28 11:32 -0400
        Re: Storage Cost Calculation Ian Kelly <ian.g.kelly@gmail.com> - 2014-09-27 23:04 -0600
        Re: Storage Cost Calculation Duncan Booth <duncan.booth@invalid.invalid> - 2014-09-28 20:07 +0000
          Re: Storage Cost Calculation Denis McMahon <denismfmcmahon@gmail.com> - 2014-09-29 14:44 +0000

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