x86 vs x64

x86 vs. x64 is a battle-like debate in the world of computer architecture. Because they both have their unique presence and importance in the industry of computers architecture. So, X86 vs x64 is the frequently …

x86 vs x64

x86 vs. x64 is a battle-like debate in the world of computer architecture. Because they both have their unique presence and importance in the industry of computers architecture. So, X86 vs x64 is the frequently asked question.

But people must have a question that which of the two architectures is better for them. This article has all the perspectives regarding the battle of x86 vs. x64. 

What is x86 architecture?

The x86 architecture is a sequence of Instruction Set Architecture (ISA) for computer processors. It was developed by Intel Corporation in 1978.

x86 states how a computer processor can handle information and run different instructions from the operating system. It also stands for a 32-bit system. 

The ‘x’ in the x86 architecture denotes the ISA. 

What is ISA?

ISA is a conjectural model of a computer that is additionally referred to as computer design. It is essential for a computer that relates to programming, which determines the conduct of machine code.

The x86 architecture is initially a 16-bit instruction set for 16-bit processors. It is based on the intel 8086 microprocessor and its 8088 variant.  After a lot of extensions and addition, it expands to a 32-bit instruction set.

As x86 architecture is a now have 32- it of the instruction set. It means that the binary combination of 0s and 1s for each key and character is of 32 lengths, e.g., 11000111000011110001100101100011. 

Features of x86:

  • This processor introduces the concept of multitasking.
  • x86 provides procedures about the usage and management of the hardware components of the CPU
  • It gives a logical framework on how to execute the instructions over a processor.
  • The x86 helps different software programs and instructions to execute on any processor of the Intel 8086 microprocessor series.

Application of x86:

  • Laptops
  • Gaming consoles
  • Intensive workstation
  • Cloud computing segments

What is x64 architecture?

x64 architecture is similar to the x86 as it is also a series of ISA.  Its architecture has 64-bits CPUs and an operating system. The official name of this by its manufacturers is Intel 64 and AMD 64.

Features of x64:

  • It has a 64-bit long fundamental competence. 
  • x64 can operate large files by mapping the whole file into the process’s address space.
  • It has a large space for the virtual addresses, which able up to 256 TiB that will extend up to 16 EiB. 
  • The x64 also has a large space for a physical address that is able to address up to 256 TiB which will extend up to 4 PiB.

Applications of x64:

  • Mobile processor
  • Supercomputer
  • Video games consoles
  • Virtualization technologies

x86 vs. x64

It has a 32-bit architecture.It has a 64-bit architecture.
Its processors have registers, memory, and a data bus of 32-bits.Its processors have the registers, memory, and data bus of 64-bits
Its maximum addressable memory is 4 GB.Its limit is 2 raised to 64.
It is less powerful.It is more powerful than x86.
To split and store values, many registers are needed.It can store larger values.
It is slower than x64.It can easily handle complex processes fast.
It can only transmit 32-bit of data with its 32-bits bus.It can transmit 64-bit with its 64-bits bus.

x86 vs. x64 – in terms of processor:

The main difference between x86 and x64 is their processor. They both access the RAM in different manners.

x86 has a 32- bit processor and has a limited amount of physical memory. The maximum physical memory of x86 is 4GB.

However, x64 can process both 32 – bit and 64-bit programs efficiently. The 64- bit processor of x64 can handle 8, 16 even 32 GB of physical memory.

X86 vs. x64 – in terms of assembly:

We know that the assembly language consists of the combination of the binary digits 0 and 1. 

As x86 has a 32- bit processor. So, the CPU with x86 architecture can store its assembly in RAM with 0 and 1 with a total number of combinations of 2^32. 

If we calculate 2^32, it gives the result 4,294,967,295. This means in x86, with a 32-bit processor and 4 GB memory, there are over 4 billion memory locations to store data. The number 4 billion and over is huge when storing in only 4GB of memory. 

Nowadays, 4GB can only be enough for basic tasks and data. So, we cannot run multiple or heavy tasks with it. 

When it comes to x64 architecture, it gives you 64- bit and 32- bit memory allocations, which is enough for multiple and heavy programs. The physical memory of x64 is also 8, 16, or 32 GB. That means x64 can handle billions and billions of memory chunks easily. 

X86 vs. x64 – for Windows and Linux:

For both Linux and Windows, choose wisely between x86 and x64 of the processor. The instruction set of x86 is 32- bit and the instruction set of x64 are 64- bit. x86 can process 32-bit with 4GB. While x64 can process both 32- bit and 64-bit with 8 to 32 GB of memory. 

For Windows, it is generally recommended to use x64 (32- bit or 64- bit your choice) because of multi-tasking and compatibility. Linux generally recommended using 32- a bit of processor of either of both architectures because Linux does not have long flags. 

X86 vs. x64- which is better?

Keeping the bits of the instruction set and physical memory of both the processors in mind. Select the architecture according to your needs and wants. If you want a processor for a large amount of memory and functions, go for x64. But if you think that a 32-bit processor with 4GB of memory is enough for you, then go for x64.  


The question of x86 vs. x64 has a clear idea in this article. They access the different amounts of RAM. A system with x86 architecture can only run a 32-bit program with a physical memory of 4GB.

However, x64 can run both 32 bit and 64-bit programs with physical memory 8, 16, and some of it with 32 GB. 

So, x64 stores a large amount of data. Nowadays, all the computers have x64 architecture, and they run 64-bit applications, but these systems also have a separate folder for 32-bit applications with the name “Program Files (x86)”.

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