Structurally speaking, the main differences between a 32-bit CPU, or central processing unit, and a 64-bit processor are faster speeds, more transistors, and more advanced silicon processes enacted during the manufacturing stages.
Binary language is that with which a computer reads and stores sequences of random numeral 1′s and 0′s as they pertain to data and memory. Due to a far greater binary range, a computer built with a 64-bit processor is capable of numerical calculations into the quadrillions and quintillions.
A 32-bit processor’s binary calculation maximum lies in the trillions. To remove any confusion, a million is the numeral one followed by six zeroes, while a quadrillion is one followed by fifteen zeroes, and a quintillion is followed by eighteen zeroes.
The downside is that while computers began to be issued with 64-bit processors several years ago, the software is only just emerging that is designed to take full advantage of that kind of power. Innumerable personal and desktop computers equipped with 32-bit processors will not be replaced for a while to come, nor can those be upgraded for 64-bit utility.
Relatively speaking, developers have not been creating software for operating systems based on 64-bit capability for much time. It will be some time before the larger processor replaces its predecessor as the norm. Nor
The slow transition from general use of 32-bit to 64-bit processors can be likened to a tank with a cannon that fires a certain kind of shell. The cannon’s diameter can fire shells that are much larger, but the smaller ones it uses are more efficient. Now a new, spectacular explosive shell can be fired with the same cannon, but a much, much larger cannon will have to replace the one the tank now has.
Purchase of a 64-bit processor is, for many, currently an unnecessary expense.