SoC
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
  • Arm Cortex M3
  • Contact
Reading: Will The Arm Architecture Replace The X86/X64 Architecture?
SUBSCRIBE
SoCSoC
Font ResizerAa
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
Search
  • Home
  • Arm
  • Arm Cortex M0/M0+
  • Arm Cortex M4
Have an existing account? Sign In
Follow US
  • Looking for Something?
  • Privacy Policy
  • About Us
  • Sitemap
  • Contact Us
© S-O-C.ORG, All Rights Reserved.
Arm

Will The Arm Architecture Replace The X86/X64 Architecture?

Neil Salmon
Last updated: September 17, 2023 8:53 am
Neil Salmon 6 Min Read
Share
SHARE

The short answer is that while ARM is making inroads into areas traditionally dominated by x86/x64 like PCs and servers, a complete replacement is unlikely in the near future. However, ARM’s advantages in power efficiency and customizability make it a growing threat in an increasing number of applications.

Contents
Introduction to ARM and x86 ArchitecturesARM’s AdvantagesARM’s Push Into PCs and ServersBarriers to ARM Replacing x86The Path ForwardConclusion

Introduction to ARM and x86 Architectures

ARM and x86 are two fundamentally different CPU architectures that have their own strengths and weaknesses. Here’s a quick overview:

  • ARM is a RISC (Reduced Instruction Set Computer) architecture originally developed in the 1980s for use in embedded systems and mobile devices. It excels in power efficiency thanks to its simpler instruction set and design optimized for low power consumption.
  • x86 refers to the CISC (Complex Instruction Set Computer) architecture used in most PCs and servers dating back to the 1970s. x86 excels in performance through features like pipelining, branch prediction, and out-of-order execution.

Historically, x86 dominated personal computing while ARM dominated mobile. But as technological advances have blurred the lines between PCs and mobile devices, ARM has begun expanding into areas traditionally dominated by x86.

ARM’s Advantages

ARM’s main advantages over x86 include:

  • Power efficiency – ARM CPU cores consume much less power than x86. This allows longer battery life in mobile devices.
  • Customizability – Companies can license and customize ARM cores for specific needs. x86 is only made by Intel and AMD.
  • Cost – ARM processors tend to be cheaper as they require fewer transistors. This makes them ideal for mass market consumer devices.
  • Ecosystem – The ARM ecosystem has broad industry support with most mobile SoC vendors using ARM cores.

These advantages have allowed ARM to dominate mobile computing. As of 2022, over 150 billion ARM processors have been shipped compared to about 15 billion x86 processors. All modern smartphones, tablets, smartwatches, and other mobile devices use ARM processors.

ARM’s Push Into PCs and Servers

Buoyed by its advantages in mobile, ARM has begun pushing into PCs and servers which have traditionally relied on x86 processors from Intel and AMD.

For PCs, ARM-based processors from companies like Qualcomm, Samsung, and Apple offer longer battery life compared to x86. Microsoft also added ARM support in Windows to enable ARM-based Windows laptops. While performance is still behind top x86 chips, ARM’s progress in PCs continues steadily.

In servers, ARM is promising big power savings for large data centers. Amazon and Ampere Computing are releasing high-performance ARM server chips challenging incumbents like Intel Xeon. Although adoption is still early, ARM’s power efficiency gives it a major opportunity in servers.

Barriers to ARM Replacing x86

While ARM has made progress in PCs and servers, significant barriers remain before it can displace x86 completely:

  • Legacy software support – Most existing software is designed only for x86. Emulation on ARM still lags native x86 performance.
  • Ecosystem inertia – The existing x86 Windows/Linux ecosystem has huge inertia. Most companies are still conservative about adopting ARM.
  • Performance – Top-end x86 chips still outperform ARM. Apple’s M1 is the first ARM chip to truly match x86 performance.
  • Enterprise features – X86 offers mature enterprise features like ECC memory which are still developing on ARM.

It will likely take many more generations of ARM innovation before it can catch up to x86’s ecosystem maturity and top-end performance.

The Path Forward

Rather than a wholesale replacement, ARM is more likely to slowly gain share in specific segments playing to its strengths:

  • Mobile and embedded devices – ARM will continue dominating this space where power efficiency is critical.
  • Low-cost PCs and Chromebooks – ARM stands a strong chance here catering to basic computing needs.
  • Specialized servers – For large data centers optimizing every watt, ARM can carve out a presence.
  • High-performance computing – ARM is expanding into supercomputers and AI accelerators using its customizability.

But the scale and inertia of the x86 ecosystem means it will stay as the dominant architecture powering business PCs, high-end gaming rigs, and mission-critical servers for the foreseeable future.

Rather than a wholesale replacement, we are likely to see an increasing presence of ARM-powered devices co-existing and complementing the mature x86 landscape.

Conclusion

ARM’s power efficiency and customizability give it disruptive potential across a wide range of computing segments. But the massive x86 ecosystem is unlikely to be wholly replaced in the near future. A more gradual adoption of ARM in mobile, embedded, and select server applications is the likely path forward as the two architectures complement each other with their respective strengths.

Newsletter Form (#3)

More ARM insights right in your inbox

 


Share This Article
Facebook Twitter Email Copy Link Print
Previous Article Fail to add JTAG/swd debug into Cortex-M0
Next Article Is X64 Compatible with ARM?
Leave a comment Leave a comment

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

2k Followers Like
3k Followers Follow
10.1k Followers Pin
- Sponsored-
Ad image

You Might Also Like

How much memory does the Cortex-M35P have?

The Cortex-M35P from ARM is a new microcontroller targeted for…

6 Min Read

What is the difference between link register and stack?

The link register and stack are two important concepts in…

8 Min Read

Reverse Engineering ARM Binaries

Reverse engineering ARM binaries involves taking apart and analyzing ARM…

8 Min Read

ARM Cortex-M Architecture

The ARM Cortex-M is a group of 32-bit RISC ARM…

7 Min Read
SoCSoC
  • Looking for Something?
  • Privacy Policy
  • About Us
  • Sitemap
  • Contact Us
Welcome Back!

Sign in to your account