The ARM Cortex-X4 is a high-performance
CPU core
A multi-core processor (MCP) is a microprocessor on a single integrated circuit (IC) with two or more separate central processing units (CPUs), called ''cores'' to emphasize their multiplicity (for example, ''dual-core'' or ''quad-core''). Ea ...
from
Arm
In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm between the glenohumeral joint (shoulder joint) and the elbow joint. The distal part of the upper limb between ...
, released in 2023 as part of Arm's "total compute solution". It serves as the successor of
ARM Cortex-X3
The ARM Cortex-X3 is the third generation X-series high-performance CPU core from Arm.
It forms part of Arm's Total Compute Solutions 2022 (TCS22) along with Arm's Cortex-A715, Cortex-A510, Immortalis-G715 and CoreLink CI-700/NI-700.
Arch ...
.
X-series CPU cores generally focus on high performance, and can be grouped with other ARM cores, such as
ARM Cortex-A720 or/and
ARM Cortex-A520
The ARM Cortex-A520 is a " little" CPU core model from Arm unveiled in TCS23 (total compute solution) it serves as a successor to the CPU core ARM Cortex-A510. The Cortex-A5xx CPU cores series generally focus on high efficiency, the CPU core can b ...
in a System-on-Chip (SoC).
Architecture changes in comparison with ARM Cortex-X3
The processor implements the following changes:
* ARMv9.2
*
micro-op (MOP) cache removed (previously 1.5k entries)
* Decode width: 10
* Rename / Dispatch width: 10 (increased from 8)
*
Reorder buffer (ROB): 384 entries (increased from 320)
* Execution ports: 21 (increased from 15)
*
Pipeline
A pipeline is a system of Pipe (fluid conveyance), pipes for long-distance transportation of a liquid or gas, typically to a market area for consumption. The latest data from 2014 gives a total of slightly less than of pipeline in 120 countries ...
length: 10 (increased from 9)
* Up to 2 MiB of private L2 cache (increased from 1 MiB)
* DSU-120
** Up to 14 cores (up from 12 cores)
** Up to 32 MiB of shared L3 cache (increased from 16 MiB)
Performance claims:
* 15% peak performance improvement over the Cortex-X3 in smartphones
:(3.4GHz, 2MB L2, 8MB L3).
* 13% IPC uplift over the Cortex-X3, when based on the same process, clock speed,
:and L3 cache (but 2 MiB L2 vs 1 MiB L2) setup (also known as ISO-process).
Architecture comparison
:;"Prime" core
Usage
*
Google
Google LLC (, ) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial ...
•
Tensor G4
*
MediaTek
MediaTek Inc. (), sometimes informally abbreviated as MTK, is a Taiwanese fabless semiconductor company that designs and manufactures a range of semiconductor products, providing chips for wireless communications, high-definition television, h ...
•
Dimensity 9300/9300+
*
Qualcomm
Qualcomm Incorporated () is an American multinational corporation headquartered in San Diego, California, and Delaware General Corporation Law, incorporated in Delaware. It creates semiconductors, software and services related to wireless techn ...
•
Snapdragon 8 Gen 3 (2023)
See also
*
ARM Cortex-A520
The ARM Cortex-A520 is a " little" CPU core model from Arm unveiled in TCS23 (total compute solution) it serves as a successor to the CPU core ARM Cortex-A510. The Cortex-A5xx CPU cores series generally focus on high efficiency, the CPU core can b ...
, related high efficient microarchitecture
*
ARM Cortex-A720, related efficient sustained performance microarchitecture
*
Comparison of ARMv8-A cores
This is a comparison of ARM instruction set architecture application processor cores designed by Arm Holdings (ARM Cortex-A) and 3rd parties. It does not include ARM Cortex-R, ARM Cortex-M, or legacy ARM cores.
ARMv7-A
This is a table com ...
References
{{Application ARM-based chips
ARM processors