Browse Definitions :
Definition

ARM processor

Contributor(s): Matthew Haughn, Stephen J. Bigelow

An ARM processor is one of a family of CPUs based on the RISC (reduced instruction set computer) architecture developed by Advanced RISC Machines (ARM).

ARM makes 32-bit and 64-bit RISC multi-core processors. RISC processors are designed to perform a smaller number of types of computer instructions so that they can operate at a higher speed, performing more millions of instructions per second (MIPS).  By stripping out unneeded instructions and optimizing pathways, RISC processors provide outstanding performance at a fraction of the power demand of CISC (complex instruction set computing) devices.

ARM processors are extensively used in consumer electronic devices such as smartphones, tablets, multimedia players and other mobile devices, such as wearables. Because of their reduced instruction set, they require fewer transistors, which enables a smaller die size for the integrated circuitry (IC). The ARM processor’s smaller size, reduced complexity and lower power consumption makes them suitable for increasingly miniaturized devices.

ARM processor features include:

  • Load/store architecture.
  • An orthogonal instruction set.
  • Mostly single-cycle execution.
  • Enhanced power-saving design.
  • 64 and 32-bit execution states for scalable high performance.
  • Hardware virtualization support.

The simplified design of ARM processors enables more efficient multi-core processing and easier coding for developers. While they don't have the same raw compute throughput as the products of x86 market leader Intel, ARM processors sometimes exceed the performance of Intel processors for applications that exist on both architectures.

The head-to-head competition between the vendors is increasing as ARM is finding its way into full size notebooks.  Microsoft, for example, offers ARM-based versions of Surface computers. The cleaner code base of Windows RT versus x86 versions may be also partially responsible -- Windows RT is more streamlined because it doesn’t have to support a number of legacy hardwares.

ARM is also moving into the server market,  a move that represents a large change in direction and a hedging of bets on performance-per-watt over raw compute power. AMD offers 8-core versions of ARM processors for its Opteron series of processors. ARM servers represent an important shift in server-based computing. A traditional x86-class server with 12, 16, 24 or more cores increases performance by scaling up the speed and sophistication of each processor, using brute force speed and power to handle demanding computing workloads.

In comparison, an ARM server uses perhaps hundreds of smaller, less sophisticated, low-power processors that share processing tasks among that large number instead of just a few higher-capacity processors. This approach is sometimes referred to as “scaling out,” in contrast with the “scaling up” of x86-based servers.

The ARM architecture was originally developed by Acorn Computers in the 1980s.

See an introductory lecture on ARM processors:

 

This was last updated in January 2015

Continue Reading About ARM processor

Join the conversation

5 comments

Send me notifications when other members comment.

Please create a username to comment.

thanks,
Cancel
arm can be both and neither be both
http://www.firmcodes.com/difference-microcontroller-microprocessor/
Cancel
Here they tell slitely different: http://www.firmcodes.com/microcontrollers/arm/arm-processors-architecture-overview/

Definitely imagine that which you said. Your
favourite justification seemed to be at the internet the easiest factor to be
aware of. I say to you, I certainly get annoyed at the same time
as other folks consider concerns that they just don’t realize about.
You managed to hit the nail upon the highest as well as
defined out the entire thing without having side effect , people could
take a signal. Will probably be again to get more. Thanks
Cancel
I have a problem
I want fine type processor (DUAL CORE ARM DCIC 0907 485728 1137 K6UGNA)  what is it?
Please say me about this processor and and how buy it?
thanks a lot
Cancel
sooo this is good for the ras pi 4?
Cancel

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

SearchStorage

  • RAM (Random Access Memory)

    RAM (Random Access Memory) is the hardware in a computing device where the operating system (OS), application programs and data ...

  • business impact analysis (BIA)

    Business impact analysis (BIA) is a systematic process to determine and evaluate the potential effects of an interruption to ...

  • M.2 SSD

    An M.2 SSD is a solid-state drive that is used in internally mounted storage expansion cards of a small form factor.

Close