Microsoft Windows 7 Ultimate 64 Bit Full Version DVD with Product Key COA

Windows 7 32 bits and Windows 7 64 bits. The difference between the two are Windows 7 32 bit supports up to 4GB RAM only. Another words, let’s say your computer has 32GB RAM and you install Windows 7 32 bit version, you only see 4GB RAM, after successful install of Windows OS.

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