Back in May 2006, when Microsoft announced Vista system memory requirements of 512 MB for “Vista Capable” and 1 GB for “Vista Premium Ready” classifications, the average XP system had 833 MB and 659 MB of installed memory for Desktop and Portable systems respectively. Once Vista was released in early 2007, most users determined that “more memory was better” as the average installed desktop memory rose relatively quickly to over 2 GB on Vista systems. In recent months, it is not uncommon for PC manufacturers to market Vista systems with 3 GB of RAM. The emergence of 64-bit architecture has also likely played a role in the increase of average RAM.
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