Question

Can you have 64-bit programs on 32-bit os with 64-bit processor?

Answer 1

You can't run 64 bit's program on 32(x86) bit even with 64 bit processor.

You do need to install OS of 64 bit to run a 64 bit's program.

There are some difference between 32 bit and 64 bit OS

they're commonly known as architecture of machine.

32 bit OS or processors process less instructions.

A 32-bit system can access 2^32 memory addresses

Whereas a 64 bit can access 2^64 memory addresses

Machines made in early 1900 and 2000 deals with 32 bit system.

Now a days, 64 bit is common.