GATE CSE IT » Difference Between 32 Bit and 64 Bit Operating Systems

Difference Between 32 Bit and 64 Bit Operating Systems

Introduction

We often hear about 32 bits and 64 bits Operating Systems, yet many computer users aren’t clear about the distinctions between 32-bit and 64-bit. The first thing to note is that the 32-bit and 64-bit distinctions apply to the following three factors:

  1. 32-bit and 64-bit processors.
  2. Operating system supporting 32 & 64 bits.
  3. Software is used to run an operating system that supports 32 bits and 64 bits.

So, the initial phase of technological advancement was in the area of processing power. This was when 64-bit processors were introduced by AMD64 processors in April 2003 – Athlon and Operon.

To accommodate the 64-bit processor, it introduced an operating system that could support 64 bits on the market. For instance, Windows for 32-bit and 64-bit. After this an operating system was introduced and a 64-bit processor that supports 64-bit and software could be used on 64-bit architecture. For instance, Excel applications for 32-bit and 64-bit.

What is a 32-Bit Operating System?

It’s a type of CPU architecture that can transfer 32 bits of information. This can refer to the quantity of information and data your CPU can handle when it is working. Many computers built in the early 1990s and 2000s were 32-bit computers. The register memory will typically refer to one byte. This means that the 32-bit system can process around 4,294,967 bytes (4 GB RAM). Its actual limit is lower than 3.5 GB (generally) because a section of the register memory is used to store different temporary values in addition to memories.

What is a 64-Bit Operating System?

The 64-bit microprocessor enables computers to process data, information, and memory addresses with 64 bits. Such a system can typically be used for reference of 16 exabytes (17,179,869,184 GB) of memory.

The 64-bit computer (a computer that has a 64-bit processor) has more than 4 GB of RAM. This is a million times greater in comparison to what a normal workstation requires connecting to. In short, if your computer has 8 GB of memory, it will require a 64-bit processor. Otherwise, the CPU can’t be accessible to a minimum of 4 GB of memory.

Key Difference Between 32-Bit and 64-Bit Operating Systems

32-Bit Operating Systems64-Bit Operating Systems
Addressable space on 32-bit processors is 4 GB. Addressable space on 64-bit processors is 16 exabytes.
32-bit systems are limited to 3.2 GB RAM. 64-bit systems can allow users to store as much as 17 billion GB of RAM.
Operating systems and applications with 32 bits require 32-bit processors.64-bit OS (Operating Systems) requires a 64-bit CPU.
32-bit processors require a 32-bit operating system.64-bit processors run on 64 or 32-bit operating systems.
32-bit processors are not the ideal choice for stress testing or multitasking.64-bit processors are the best choice to perform multiple tasks at one time.

A specific operating system is designed for computers capable of handling 64 bits simultaneously. Most personal computers are now running 64-bit processors, and 64-bit versions are expected to be common on mobile devices.

In the ideal scenario, there is no way to change the 32-bit processor into a 64-bit one or convert the 32-bit operating system to a 64-bit one because the two architectures are distinct. If you implement a hack, it could affect the entire chain of operations, from the performance of processors to the support for the operating system and software. In terms of compatibility, the main difference between 32-bit and 64-bit systems of operating is that the 32-bit can run an operating system with 32 bits effectively. However, it will not be capable of running a 64-bit operating system, while a 64-bit processor system is able to run 64-bit or 32-bit versions of an Operating System (OS).

If you’re installing an operating system, you must be aware of the processor type on your computer and ensure that you choose the right one. This is essential to know what operating system your system is running. Most modern computers feature 64-bit processors, which offer better performance in all aspects. They allow for better memory usage and speedy operation of the computer.

They also offer better capacity for memory in contrast to 32-bit processors. In some instances, there aren’t 64-bit drivers, which is why 32-bit computers could come in to help. It is the most efficient option to purchase a 64-bit operating system that comes with 64-bit apps that will give you the most efficient performance.