32-bit vs 64-bit

What is the difference between 32-bit and 64-bit architecture:

Everyone is using the computer in today's world. Imagine a life without a computer and smartphone is just impossible. But there is always been a confusion among many of the person's mind that which one is better 32-bit or 64-bit, which one is fast or which one gives the better performance. So let's try to clarify all these questions........ 

What is this 32 or 64 bit mean?

A 32-bit architectural processor means that the processor is having 32 address lines and the processor can exchange up to 32-bit data at a time or we can say that it can calculate a 32-bit integer data at a time. And the same thing applies to the 64-bit processor it can process 64-bit data at a time. But the main point is that In a 32-bit processor the maximum RAM you can interface is 4GB. This is so because of 2^32 = 4GB. If you want more than 4GB RAM then you have to switch to the 64-bit architecture. whatever you are using a Smartphone or a Computer same thing applies to both.

The bigger number is always better?

Every normal people thought that the bigger the number the better the performance. But this is not always true. Also according to the above point, it is quite clear that 64-bit is faster than 32-bit. But actually, it not purely correct. Sometimes you find that 32-bit is faster than 64-bit in some cases. This condition occurs when you have a 32-bit Software running on a 64-bit processor. In that case, your OS cannot fully utilize your system and the optimisation between hardware and software is not up to mark. Even in the today's time, there is so many software which is of 32-bit and which can perform better on 32-bit architecture. So if you have less than 4GB RAM in your system then you should install 32-bit OS in your system, it will provide you better performance.