▷ What is an arm processor and how does it work?
Table of contents:
- What is an ARM processor and what is the difference with the Intel or AMD processor of my gaming PC
- ARM is the best example of energy efficiency in processors
In this article we will see what an ARM processor is and its importance in the world in which we live. ARM is a term that you will have read many times, especially when buying a new smartphone or tablet. These types of processors are increasingly used, so it is very important to understand well how they work.
What is an ARM processor and what is the difference with the Intel or AMD processor of my gaming PC
ARM is a company and at the same time, ARM is a processor architecture that develops and sells that company. The super technical definition of an ARM processor is a RISC-based architecture-based CPU developed by Acorn Computers in the 1980s and now developed by Advanced RISC Machines, ARM.
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ARM is a company in England that develops and designs a processor architecture. The ARM abbreviation for processor design means Acorn RISC Machine, and the ARM abbreviation for the company that designs and sells the license to use that architecture means Advanced RISC Machines. The ARM company designs a method to build processors and companies like Qualcomm, Apple and Samsung license it to build their own custom processors. Many other companies also license ARM design. Most devices that are small and battery operated.
RISC stands for reduced instruction set computing. The Intel or AMD processor you'll find on your PC is a CISC (Complex Instruction Set Computing) processor. The two different types are designed for different needs. A RISC processor is designed to execute fewer instructions (instructions define which orders can be sent to a processor through a program) than a CISC processor. Because they can do fewer things, they can have a higher frequency and perform more MIPS (millions of instructions per second) than a CISC processor.
ARM is the best example of energy efficiency in processors
By reducing the number of instructions the processor can process, you can create a simpler circuit inside the chip. An RISC processor uses fewer transistors which, in turn, use less power. Because the circuits are simple, a smaller array size can be used to build the processor. Matrix size is the measurement of a chip in the silicon wafer on which a processor is built. When the chip size is smaller, more components with less wiring can be placed on the surface of the processor. This makes ARM processors small and consume much less energy.
Small, fast and simple ARM processors are perfect for things like phones. A phone doesn't ask the CPU to process things like 3D collision data, or try to run hundreds of threads on its limited number of cores. Mobile software, both the operating system and the applications running on it, are encrypted and optimized for the small instruction set used by the ARM processor. But that does not mean that ARM CPUs are not powerful.
The current ARM specification enables 32-bit and 64-bit design, hardware virtualization, advanced power management that can interface with user software, and a load / storage architecture that is primarily orthogonal and single-cycle execution. All you need to know is that it means that ARM processors are also very good at things other than phones or media players, things like supercomputers. ARM has an excellent performance-watt ratio. Properly encoded software can do more per watt of electricity used in an ARM chip than in a CISC CPU. This makes it easy to scale things like servers and supercomputers when using ARM processors.
You can get the required amount of raw computing power from 24 CISC CPU cores, or you can get it from hundreds of small, low-power ARM cores. CISC cores will use their computing power to perform the necessary calculations on just a few CPU cores and threads, while ARM cores will spread the tasks across many low-capacity, less complex cores. ARM cores are much higher in number, but they do not need more power or more space than CISC cores. This makes scaling - that is, adding more computing power to a processor design - easier with ARM.
In the end, a single instance of an ARM processor will never be as powerful as something like an Intel Core i7 that you would find on a gaming PC. But that Intel Core i7 uses roughly 12 times more energy, needs an active cooling system, and will never fit into a phone's body. The less complex ARM processor works well when software is written to support it directly, and due to its low-power feature set and small design, it's easy to add a few high-speed clock cores to run the advanced software we all want to use on our phones.
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This ends our article on what an ARM processor is and how it works, remember that you can leave a comment if you have any questions or suggestions. You can also share the article on social networks so that it can help more users who need it.
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