6.0 KB · ⇊ 4 parts · ⤓ Micron 6.0 KB · ⤓ HTML 82.1 KB

top

The ARM Cortex-X3 is the third generation X-series high-performance CPU core from Arm.cite-ref-0-1-0[1]cite-ref-androidauthority-2022-06-28-2-0[2]

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.cite-ref-3[3]

• Architecture changes in comparison with ARM Cortex-X2

• Usage

• Architecture comparison

• See also

• References

The processor implements the following changes:cite-ref-4[4]

• Decode width: 6 (increased from 5)

• Rename / Dispatch width: 8

• micro-op (MOP) cache: 1.5k entries (reduced from 3k)

• Reorder buffer (ROB): 320 entries (increased from 288)

• Execution ports: 15

• Pipeline length: 9 (reduced from 10)

Performance claims:

• 25% peak performance improvement over the ARM Cortex-X2 in smartphones

(3.3GHz, 1MB L2, 8MB L3).cite-ref-5[5]

• 11% IPC uplift over the ARM Cortex-X2, when based on the same process,

clock speed, and cache setup (also known as ISO-process).cite-ref-androidauthority-2022-06-28-2-1[2]

• Google • Tensor G3

• MediaTek • Dimensity 9200cite-ref-6[6]

• Qualcomm • Snapdragon 8 Gen 2cite-ref-7[7]

"Prime" core

| uArch | Cortex-A78 | Cortex-X1 | Cortex-X2 | | Cortex-X4 | Cortex-X925 |

|---|---|---|---|---|---|---|

| Code name | Hercules | Hera | Matterhorn-ELP | Makalu-ELP | Hunter-ELP | Blackhawk |

| Architecture | ARMv8.2 | ARMv8.2 | ARMv9 | ARMv9 | ARMv9.2 | ARMv9.2 |

| Peak clock speed | ~3.0 GHz | ~3.0 GHz | ~3.0 GHz | ~3.3 GHz | ~3.4 GHz | ~3.8 GHz |

| Decode width | 4 | 5 | 5 | 6 | 10 [ 8 ] | 10 [ 8 ] |

| Dispatch | 6/cycle | 8/cycle | 8/cycle | 8/cycle | 10/cycle | 10/cycle |

| Max in-flight | 2x 160 | 2x 224 | 2x 288 | 2x 320 | 2x 384 | 2x 768 |

| L0 (Mops entries) | 1536 [ 9 ] | 3072 [ 9 ] | 3072 [ 9 ] | 1536 | 0 [ 8 ] | |

| L1-I + L1-D | 32+32 KiB | 64+64 KiB | 64+64 KiB | 64+64 KiB | 64+64 KiB | 64+64 KiB |

| L2 | 128–512 KiB | 0.25–1 MiB | 0.25–1 MiB | 0.25–1 MiB | 0.5–2 MiB | 2–3 MiB |

| L3 | 0–8 MiB [ 10 ] | 0–8 MiB [ 10 ] | 0–16 MiB | 0–16 MiB | 0–32 MiB | 0–32 MiB |

• ARM Cortex-A715, related high performance microarchitecture

• Comparison of ARMv8-A cores, ARMv8 family

cite-note-0-11. ↑ "Next-gen Armv9 CPUs unleash compute performance - Arm Community". arm.com. 2022-06-28. Retrieved 2023-09-16.

cite-note-androidauthority-2022-06-28-22. ↑ "Arm Cortex-X3 and Cortex-A715: Next-gen CPUs redefined". Android Authority. 2022-06-28. Retrieved 2022-10-08.

cite-note-33. ↑ "Second generation Arm Total Compute Solutions - Arm Community". arm.com. 2022-06-28. Retrieved 2023-09-16.

cite-note-44. ↑ "Arm Unveils Next-Gen Flagship Core: Cortex-X3". WikiChip Fuse. 2022-06-28. Retrieved 2023-09-16.

cite-note-55. ↑ "ARM unveils Cortex-X3 (+25% peak performance) and Cortex-A715 (+20% efficiency)". GSMArena. Retrieved 2022-10-08.

cite-note-66. ↑ "MediaTek Launches Flagship Dimensity 9200 Chipset for Incredible Performance and Unmatched Power Savings". MediaTek. 2022-11-08.

cite-note-77. ↑ "Snapdragon 8 Gen 2 Defines a New Standard for Premium Smartphones". qualcomm.com. 2022-11-15. Retrieved 2022-11-15.

cite-note-1-81. "Arm Cortex-X4, A720, and A520: 2024 smartphone CPUs deep dive". Android Authority. 2023-05-29. Retrieved 2023-06-01.

cite-note-2-92. "Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence". anandtech.com. Archived from the original on May 26, 2020. Retrieved 2023-06-01.

cite-note-103. citerefschor2020Schor, David (2020-05-26). "Arm Cortex-X1: The First From The Cortex-X Custom Program". WikiChip Fuse. Retrieved 2023-05-30.