Can I buy Win 7?

June 16, 2014, 4:52 am

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but it comes with a 64-bit OS installed, does that mean I will be unable to replace it with a 32-bit XP installation?

Depends on whether XP 32-bit drivers are available. 32-bit software runs on 64-bit capable machines.

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Is 32 vs. 64 bit purely a software thing, or does it mean the hardware is also different?

The hardware is different. 64 bit addressing is not possible on 32-bit hardware. But, of course, 32 bit addressing is possible on 64-bit hardware.

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