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Date: Tue, 14 Jan 2014 21:39:43 +0000
From: Peter Maxwell <>
Subject: Re: [PHC] A must read...

On 14 January 2014 21:10, Krisztián Pintér <> wrote:

> Marsh Ray (at Tuesday, January 14, 2014, 9:27:40 PM):
> > Looks like 500 MiB DDR3 is currently $4.22 retail. This doesn't
> > sound cost-prohibitive
> please note that the proposed hypothetical machine consists of 2^32
> units. if you want to add $4 memory to all of them, we are talking
> about 16bn dollars + a new power plant. granted, you work for MS, so
> you can imagine that :) but not many others can.
​The paper says it needs ~2^42​ bytes of memory (page 3).  Assuming we use
500MiB units, it means you'd need around 8,400 of them, give or take.  For
$4.22 a piece, that's less than $36,000.

Unless my arithmetic is off (in fairness, my handling of basic arithmetic
is surprisingly poor so definitely worth double-checking).

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