32-bit vs. 64-bit

     There are 32-bit and 64-bit programs. What's the difference? 

     To begin with, a bit is the basic unit of information. In reality, when it comes to running a program most users can't tell the difference between the two. 

     A 32-bit program uses up to 4GB of random access memory (RAM) while it is running. A 64-bit program is capable of utilizing more than 4GB of RAM. 

     Most programs are 32-bit, but large, complicated programs (like, say, games and really large programs) are 64-bit. That's because 64-bit operating systems and programs can handle larger amounts of memory and data more effectively and they execute commands much faster.  

     So, if you have more than 4GB of RAM on your computer, a 64-bit program is better than a 32-bit one. 

     You can run a 32-bit program on both 32-bit and 64-bit operation. Because they are compatible to both 32-bit and 64-bit operating systems, 32-bit programs are still popular.