how i understand theres only processors with 32 bits and 64 bits so if i insert cpu with 64bit i only can use 64bits software and windows?
Nope, if you have a 64 bit processor you can run a 32 bit operating system and 32 bit applications as well.
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but if there is game like medal of honor and it writes 64 bit is not supported then i can play that game on pc with 64bits cpu like athlon 64?
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The only time 64 bit will come into play is if your running a 64 bit Operating System, if you have a 64 bit Intel or AMD and run XP 32bit your running 32bit, nothing you can do about it.
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hmm ok so i can install 32 bit operatng system and 64 bit in two diffirent hard drives or splitted up hard drive part right? and what adventages give 64 bit system?
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Yes you can dual boot XP and Vista 64bit on two different drives or two different partitions
64bit
http://zone.ni.com/devzone/cda/tut/p/id/5709
http://www.winsupersite.com/showcase...sta_ff_x64.asp
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thanks stranglehold i think you most helpfull guy in these forums.

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Just so you know, I have a Dual boot system here. One partition is meant for XP 32bit and one partition for Vista 64 bit, and it runs pretty well.
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64-bit Windows also has a subsystem that allows it to run 32-bit applications
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thanks for information guys.

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