Today’s most pc and laptops comes in two variant – 32 bit and 64 bit operating system. Let us take further knowledge about this
First understand what is a bit?
A bit (short for binary digit) is the smallest unit of digital information, represented by either 0 or 1. Arranging a series of bits in sequence creates a binary math language that the processing chips can understand. As a result, CPUs are identified by their ability to process these sequences (32-bit or 64-bit). 8 bit = 1 Byte
Now let see the difference:
The terms 32-bit and 64-bit refer to the way a computer's processor (also called a CPU), handles information. The 64-bit version of Windows handles large amounts of random access memory (RAM) more effectively than a 32-bit system
The main differences between the 32-bit versions of Windows and the 64-bit versions of Windows relate to memory accessibility, memory management, and enhanced security features. The security features that are available in the 64-bit versions of Windows include the following:
Kernel Patch Protection
Support for hardware-backed Data Execution Protection (DEP)
Mandatory driver signing
Removal of support for 32-bit drivers
Removal of the 16-bit subsystem
One of the greatest advantages of using a 64-bit version of Windows is the ability to access physical memory (RAM) that is above the 4-gigabyte (GB) range. Depending on the version of Windows that is installed, a 64-bit version of Windows supports from 1 GB of RAM to more than 128 GB of RAM. The ability to address more physical memory lets Windows minimize the time that is required to swap processes in and out of physical memory. Therefore, Windows can manage processes more efficiently. This memory management feature helps improve the overall performance of Windows .
Advantages when you install a 64-bit version of Windows
Increased memory support beyond that of the 4-GB addressable memory space that is available in a 32-bit operating system
Increased program performance for programs that are written to take advantage of a 64-bit operating system
Enhanced security features
What to consider when you install a 64-bit version of Windows Vista:
You can use softwares built for 32bit processor but you cannot use 32bit drivers on 64bit processor.
You can’t Can I upgrade from a 32-bit version of Windows to a 64-bit version of Windows.
To install a 64-bit version of Windows Vista, you need a processor that's capable of running a 64-bit version of Windows.