ARM Cortex-X4
The ARM Cortex-X4 is a high-performance CPU core from Arm, released in 2023 as part of Arm's "total compute solution". It serves as the successor of ARM Cortex-X3.
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 in a System-on-Chip.
Architecture changes in comparison with ARM Cortex-X3
The processor implements the following changes:- ARMv9.2
- micro-op cache removed
- Decode width: 10
- Rename / Dispatch width: 10
- Reorder buffer : 384 entries
- Execution ports: 21
- Pipeline length: 10
- Up to 2 MiB of private L2 cache
- DSU-120
- * Up to 14 cores
- * Up to 32 MiB of shared L3 cache
- 15% peak performance improvement over the Cortex-X3 in smartphones
- 13% IPC uplift over the Cortex-X3, when based on the same process, clock speed,
Architecture comparison
Usage
- Google • Tensor G4
- MediaTek • List of [MediaTek systems on chips|Dimensity 9300/9300+]
- Qualcomm • List of [Qualcomm Snapdragon systems on chips|Snapdragon 8 Gen 3 ]