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may be this will help u<br />
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<a href="http://www.w7forums.com/windows-7-64-bit-vs-32-bit-t484.html" rel="ugc">http://www.w7forums.com/windows-7-64-bit-vs-32-bit-t484.html</a>
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we have these two options to go . why we need to select 32 bit over 64 bit ?
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we have these two options to go . why we need to select 32 bit over 64 bit ?

may be this will help u

http://www.w7forums.com/windows-7-64-bit-vs-32-bit-t484.html

Windows 7  32 bit vs 64 bit

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.