architecture - 64bit Applications and Memory Limits -

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can explain me how 64 bit applications, 64bit os, , 64 bit cpu fit establish how memory addressable application?

for example, how addressable memory application affected if run 64bit application on 64bit cpu, 32bit os?

or 64bit cpu 64bit os , 32bit application?

what happens when run 64bit application on 32bit cpu?

you can't run 64-bit application on 32-bit cpu/os.

a 64-bit os running on 64-bit processor has unlimited memory. address space 0 2^64, or 18.4 exabytes.

a 32-bit application running on 64-bit os/processor gets 32-bit address space, 4gb.

more detail: http://cnx.org/content/m13082/latest/


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