Who is better ARM Cortex A9 Dual Core or ARM Cortex A7 Quad Core?

1. When the number of cores is quad-core, arm

cortex

A9 is better than ARM both from single-threaded and multi-threaded

cortex

A7 is much better.

2. Single-core ARM

cortex

The theoretical performance of the A9 is a dual-core ARM

cortex

A7 performance.

3. The programs on the mobile phone are very focused on single-core performance, so armcortex

A9 is better than ARM

cortex

A7 is good.

First of all, we must understand a concept ARM Cortex-A9 is just a commercial solution ARM designed the ARM Cortex-A9 itself, and sold the license of this solution to companies such as MediaTek, Rockchip, Qualcomm, Apple, NVIDIA, Huawei, etc.

Cortex, ARM, A9, quad-core.

First of all, we must understand a concept ARM Cortex-A9 is just a commercial solution ARM designed the ARM Cortex-A9 itself, and sold the license of this solution to companies such as MediaTek, Rockchip, Qualcomm, Apple, NVIDIA, Huawei, etc.

A7 is low-end, power-saving, and has a small chip area, while A17 is high-end, with strong performance and high power consumption.

1. The purpose of A12 is to replace A9 and position the mid-range, and the performance is said to be 40% higher than A9, and A15 is said to be 60% better than A9, catching up with A17 and saving power compared to A17.

2. A9 is positioned in the mid-range, and now its position is more embarrassing, the performance is slightly higher than that of A7, and the power consumption is not ideal.

3. For chips with the same frequency and process, A7 is only a quarter of the area of A17 chips, and the power consumption is only 17% of A17, while the performance reaches half of A17.

The ARM processor is the first low-power cost RISC microprocessor designed by Acorn**** in the UK.

ARM processors are inherently 32-bit designed, but they also come with a 16-bit instruction set, which typically offers up to 35% savings over 32-bit equivalent**, while retaining all the benefits of a 32-bit system.

Not Qualcomm's. ARM Cortex-A9 is a processor from Arm UK, the world's leading provider of semiconductor intellectual property.

The ARM Cortex-A9 is an instruction set based on the ARMV7 A-series processors, and many major processor applications are increasingly demanding performance to enable faster data rates, more services, and more new features, such as encryption and security with a rich, dynamic user interface.

In such applications, consumer demand is the main driver of product development, so reducing the cost of the end product is a major challenge for manufacturers. It's not just about competition: it's also about opening up new markets in developing countries, which have much less disposable income than the Western world.

The ARM architecture (formerly known as the Advanced RISC Machine, earlier known as the Acorn RISC Machine) is a 32-bit RISC processor architecture that is widely used in many embedded system (EMPEDDED) designs, such as mobile phones, MIDs, smart MP4s and other portable products.

Its counterpart is the x86 architecture, which is applied to computers, laptops, tablets, etc. The common ARM9, ARM11, Cortex A8, and Cortex A9 on the market all refer to the core of the ARM architecture, of which ARM9 and ARM11 are mainly used in economic products, which are all low-end, and Cortex A8 and Cortex A9 are mainly used in high-end products, such as Apple iPhone. Blue Devil W10 and Taipower T760 are indeed products that apply Cortex A9 core, which is very good, compared to the previous generation of Blue Devil products W9 has been greatly improved by Taipower's previous generation product T720, and the new product Aino Novo8 on the market at the same time is also A9 core, which is more cost-effective.

**The CPU (Central Processing Unit) is a very large-scale integrated circuit, which is the computing core and control unit of a computer. Its function is mainly to interpret computer instructions as well as process data in computer software. **The processor mainly consists of combinators (ALUs, arithmetic logic units) and caches, as well as buses that enable the data, control and state between them.

Together with internal memory and input and output (IO) devices, it is known as the three core components of electronic computers.

English logic components; The arithmetic logic component can perform fixed-point or floating-point arithmetic operations, shift operations, and logical operations, as well as address operations and transformations.

Register components, including general-purpose registers, specialized registers, and control registers.

General-purpose registers can be divided into two types: fixed-point and floating-point, which are used to store the temporary storage of register operations and intermediate (or final) operation results during instruction execution.

General-purpose registers are an important part of the processor, and most instructions need to access them. The width of the general-purpose register determines the width of the data path inside the computer, and the number of ports can often affect the parallelism of the internal operation.

Dedicated registers are registers that are needed to perform some special operations.

The area of a single core chip in the ARM A75 and A73 architectures is as follows:

a75：。a73：。

a55：。a53：。

Moreover, dual-core A73+, quad-core A53+, and quad-core A35 mainly refer to the CPU processor architecture.

Performance: The basic performance of the dual-core A73 is the same as that of the quad-core A53, but the single-core performance of the A73 is stronger, and the co-frequency performance of the A73 is about twice that of the A53, but the power consumption is about 3 times, and the A53 is more power-efficient.

Components: In descending order, ARM processors can be roughly sorted as: Cortex-A73 processor, Cortex-A57 processor, Cortex-A53 processor, Cortex-A15 processor, Cortex-A12 processor, Cortex-A9 processor, Cortex-A8 processor, Cortex-A7 processor, Cortex-A5 processor, ARM11 processor Zhaoyouzu, ARM9 family fraudster, ARM7 processor, and some lower mobile phone products are basically no longer used.