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Memory Cost

In: Computers and Technology

Submitted By adamporter
Words 254
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The price and capacities of RAM and hard drive storage have come a long way in the past 30 years. Take for instance, in 1981 an 18MB hard drive cost $2500, today a 1TB hard drive costs $150. In 1990 RAM costs were $50 per MB and today one can purchase 2GB RAM for approximately $50. that there is a strong exponential correlation in the capacity vs cost ratio, where r=0.9916. During the last 30 years the capacity per unit cost ratio has nearly doubled approximately every 14 months. The regression equation is given by:
Many TB+ drives have become available which recently broken the $0.10/GB boundary, whilst the next milestone being $0.01/GB or $10/TB. If historical trends continue, then 10 years from now the cost per GB of hard drive capacity will become $0.0000351 per GB or $0.0351 per TB. For $100, one could purchase a 2,849TB drive 10 years from now, based on the analysis of historical trends. Although 120 PB drives are currently available in the server and super computing market, consumer grade hard drives aren’t available in these sizes, as the physical size and cost per PB is too great for the marketability in the consumer market. Based on historical trends, one could forecast the availability of a consumer level 100TB hard drive in the next five years. It must be noted all figures pertain to magnetic storage, solid state storage has been omitted for the sake of brevity.

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