Question: what is the difference between 32 bit and 64 bit compiler?
Answer: Said in a very simple way, 32-bit CPUs process data in 32-bit chunks, while 64-bit CPUs process data in 64-bit chunks. Perhaps the main advantage is that with a 32-bit register one can address 2^32 memory addresses (about 4 GB of RAM), while 64-bit registers can address 2^64 addresses (17.2 billion GB of RAM).