Possible Duplicate:
32-bit vs 64-bit systems
Will all 32 - bit applications work on a 64 - bit windows 7 Operating System?
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closed as exact duplicate by Diago Nov 1 '09 at 14:28
This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question. See the FAQ for guidance on how to improve it.
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Windows 7 (64-bit) has 32-bit emulation layer and all applications that work in Windows 7 (32-bit) will work with 64-bit version also. However, 32-bit drivers will not work. | |||
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Most will - some which make specific API calls may not (such as Anti Virus, Firewall, drivers or other "high level" software). | |||
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