X86 vs. X64: Know the Difference
By Shumaila Saeed || Published on February 7, 2024
X86 refers to a 32-bit instruction set architecture for CPUs, while X64, also known as x86-64, is a 64-bit extension of the x86 architecture.
Key Differences
X86, originally based on the Intel 8086 microprocessor, is a 32-bit architecture widely used in computers for decades. X64, also called AMD64 or Intel 64, enhances the x86 architecture to 64-bit, allowing for more complex and powerful computing tasks.
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Feb 07, 2024
X86 systems can address up to 4GB of RAM directly, which was sufficient for computing needs in the past. X64 systems can address a much larger memory space, exceeding 4GB, making them suitable for modern applications that require more memory.
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In terms of software compatibility, x86 is well-supported with a vast library of applications. X64 systems can run x86 software through emulation or compatibility layers but are optimized for 64-bit applications.
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Performance-wise, x64 can handle larger data sets and perform more calculations per clock cycle compared to x86. This makes x64 more efficient for tasks like video editing, 3D rendering, and large-scale scientific computations.
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From a hardware perspective, most modern CPUs support x64, which has become the standard in personal computing. X86, while still in use, is primarily found in older or less powerful devices.
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Comparison Chart
Software Support
Wide range of 32-bit applications
Supports both 32-bit and 64-bit applications
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Performance
Sufficient for basic tasks
Higher performance for demanding tasks
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Hardware Presence
Common in older or low-power devices
Standard in modern computing devices
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X86 and X64 Definitions
X86
X86 is a 32-bit computing architecture.
My old laptop uses the x86 architecture.
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X64
X64 allows for greater memory addressing than x86.
With x64, I can use more than 4GB of RAM in my system.
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X86
X86 refers to the family of microprocessors based on the Intel 8086 CPU.
X86 processors were a breakthrough in the early days of personal computing.
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X64
X64 is a 64-bit extension of the x86 architecture.
My new computer is based on the x64 architecture for better performance.
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X86
X86 architecture supports up to 4GB of RAM.
My x86-based server is limited to 4GB RAM.
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X64
X64 is optimized for modern, demanding applications.
I use x64 systems for high-end gaming and video editing.
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X86
X86 processors are known for their extensive use in early PCs.
Many classic games were designed for x86 systems.
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X64
X64 supports running 32-bit (x86) applications.
My x64 PC can still run my older x86 programs.
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X86
X86 is compatible with a wide range of legacy software.
I run several older software programs on my x86 system.
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X64
X64 is the standard in contemporary personal computing.
Most software today is developed for x64 computers.
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X86
(computing) Any of a family of instruction set architectures based on that used by the Intel 8086 microprocessor.
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X86
Specifically, the 32-bit version of the x86 instruction set architecture.
The x86 version of Windows 7 only supports a maximum of 4 GiB of RAM; 64-bit Windows can support a lot more.
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X86
(rare) Specifically, the original, 16-bit version of the x86 instruction set architecture.
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Repeatedly Asked Queries
What is the main difference between x86 and x64?
x86 is a 32-bit architecture, while x64, also known as x86-64, is a 64-bit extension of the x86 architecture.
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Feb 07, 2024
What does x86 refer to in computing?
x86 refers to a family of instruction set architectures (ISAs) based on the Intel 8086 CPU.
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Is x64 more powerful than x86?
Generally, yes. x64 architecture supports larger amounts of memory and can be more efficient in processing certain tasks.
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What does x64 stand for?
x64 stands for 64-bit Extended, an extension of the x86 architecture to 64 bits.
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How do I know if my computer is x86 or x64?
Check your system properties in the operating system; it will specify if your OS and processor are 32-bit (x86) or 64-bit (x64).
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Can x64 operating systems use more RAM than x86 systems?
Yes, x64 systems can theoretically use up to 16 exabytes of RAM, far exceeding the 4 GB limit of x86 systems.
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Why are some programs still available in x86 versions?
For compatibility with older or less powerful systems that only support x86 architecture.
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Are x86 and x64 software compatible with each other?
No, software designed for x64 systems cannot run natively on x86 systems due to architectural differences.
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Can an x86 OS run on an x64 processor?
Yes, but it will not take advantage of the 64-bit capabilities of the processor.
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Can x64 processors run x86 programs?
Yes, x64 processors are backward compatible and can run x86 (32-bit) programs.
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Are all modern processors x64?
Most modern processors are x64, as they offer better performance and capacity than x86.
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Can I install x64 drivers on an x86 system?
No, drivers are specific to the architecture and must match the system's architecture.
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Why was x64 developed?
x64 was developed to enhance performance and allow computers to use more than 4 GB of RAM, a limitation of x86 systems.
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Are x64 systems more secure than x86?
x64 systems can offer enhanced security features, but overall security depends on the operating system and user practices.
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Do gaming PCs prefer x64 architecture?
Yes, gaming PCs typically use x64 architecture for better performance and to handle more memory.
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Are mobile phones x86 or x64?
Most modern smartphones use architectures different from x86 or x64, like ARM.
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Can I upgrade from an x86 to an x64 system?
It requires a complete reinstallation of the operating system and compatible hardware.
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Is x64 software faster than x86?
It can be, especially in tasks that require handling large amounts of data or memory.
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Is Linux available in both x86 and x64 versions?
Yes, many Linux distributions are available in both x86 (32-bit) and x64 (64-bit) versions.
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What is the future of x86 architecture?
While x64 is more prevalent, x86 is still used in some applications, particularly where low power and compatibility are key.
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Feb 07, 2024
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About Author
Written by
Shumaila SaeedShumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.
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