This is kinda a myth. ARM is fine for HPC or desktop use (hence there have been very high power ARM designs like Fujitsu A64FX, Ampere Altra or the European Rhea), x86 is fine for low power, it’s just more about how the specific chip is tuned for power/raw performance/price.
Apple seems very good (partially) because they pay top dollar for power efficiency and a cutting edge low power process. Most x86 laptop chips make more significant cost tradeoffs, with cheaper dies, higher clocks, more aggressive power curves and so on.
“With RISC, a central processing unit (CPU) implements the processor design principle of simplified instructions that can do less but can execute more rapidly.”
None of this is to say RISC or by extension ARM is bad, just that where everything currently is it’s not a good choice for everyday computing. By design its as light weight and simple as possible so that it can perform its specific function faster and more efficiently with less overhead than a more general purpose processor.
This is kinda a myth. ARM is fine for HPC or desktop use (hence there have been very high power ARM designs like Fujitsu A64FX, Ampere Altra or the European Rhea), x86 is fine for low power, it’s just more about how the specific chip is tuned for power/raw performance/price.
Apple seems very good (partially) because they pay top dollar for power efficiency and a cutting edge low power process. Most x86 laptop chips make more significant cost tradeoffs, with cheaper dies, higher clocks, more aggressive power curves and so on.
It’s not though, ARM themselves admit it. https://www.arm.com/glossary/risc.
“With RISC, a central processing unit (CPU) implements the processor design principle of simplified instructions that can do less but can execute more rapidly.”
None of this is to say RISC or by extension ARM is bad, just that where everything currently is it’s not a good choice for everyday computing. By design its as light weight and simple as possible so that it can perform its specific function faster and more efficiently with less overhead than a more general purpose processor.
Geeks for geeks has a good writeup on it.
https://www.geeksforgeeks.org/computer-organization-risc-and-cisc/