The ARM Cortex-X2 is a
central processing unit
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, an ...
implementing the
ARMv9-A
AArch64 or ARM64 is the 64-bit extension of the ARM architecture family.
It was first introduced with the Armv8-A architecture. Arm releases a new extension every year.
ARMv8.x and ARMv9.x extensions and features
Announced in October 2011, AR ...
64-bit
instruction set
In computer science, an instruction set architecture (ISA), also called computer architecture, is an abstract model of a computer. A device that executes instructions described by that ISA, such as a central processing unit (CPU), is called an ' ...
designed by
ARM Holdings
Arm is a British semiconductor and software design company based in Cambridge, England.
Its primary business is in the design of ARM processors (CPUs). It also designs other chips, provides software development tools under the DS-5, RealView an ...
'
Austin
Austin is the capital city of the U.S. state of Texas, as well as the seat and largest city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, it is the 11th-most-populous city ...
design centre as part of ARM's Cortex-X Custom (CXC) program.
Architecture changes in comparison with
ARM Cortex-X1
The ARM Cortex-X1 is a central processing unit implementing the ARMv8.2-A 64-bit instruction set designed by ARM Holdings' Austin design centre as part of ARM's Cortex-X Custom (CXC) program.
Design
The Cortex-X1 design is based on the ARM C ...
The processor implements the following changes:
* 10 cycle pipeline down from 11, created by reducing the dispatch stage from 2 cycles to 1
* reorder buffer increased by 30% from 224 entries to 288
* dTLB increased by 20% from 40 entries to 48
* SVE2 SIMD support
*Bfloat16 data type support
* Support for Aarch32 removed
*Comparing the Cortex-X2 with 8MB of L3 cache to the Cortex-X1 with 4MB of L3 cache:
**16% greater integer performance
**100% greater ML performance
Usage
* MediaTek
Dimensity 9000/9000+
* Qualcomm
Snapdragon 8/8+ Gen 1
* Samsung
Exynos 2200
See also
*
ARM Cortex-A710
The ARM Cortex-A710 is the successor to the ARM Cortex-A78, being the First-Generation Armv9 “big” Cortex CPU. It is the companion to the ARM Cortex-A510 "LITTLE" efficiency core. It was designed by ARM Ltd.'s Austin centre. It is the fourt ...
, related high performance microarchitecture
References
ARM processors
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