The ARM Cortex-X3 is the third generation X-series high-performance CPU core from Arm.[1][2][3] 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.[4]

Architecture changes

in comparison with ARM Cortex-X2

The processor implements the following changes:[1][5][6]

  • 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 Cortex-X2 in smartphones (3.3GHz, 1MB L2, 8MB L3).[1][7]
  • 11% IPC uplift over the Cortex-X2, when based on the same process, clock speed, and cache setup (also known as ISO-process).[3]

Usage

Architecture comparison

uArch Cortex-A78 Cortex-X1 Cortex-X2 Cortex-X3 Cortex-X4 Cortex-X925 Cortex-X930
Code name Hercules Hera Matterhorn-ELP Makalu-ELP Hunter-ELP Blackhawk Travis
Architecture ARMv8.2 ARMv9 ARMv9.2
Peak clock speed ~3.0 GHz ~3.25 GHz ~3.4 GHz ~3.8 GHz ~
Decode Width 4 5 6 10[10] 10
Dispatch 6/cycle 8/cycle 10/cycle
Max in-flight 2x160 2x224 2x288 2x320 2x384 2x768
L0 (Mops entries) 1536[11] 3,072[11] 1536 None[10]
L1-I + L1-D 32+32 KiB[12] 64+64 KiB 64+64 KiB
L2 128–512 KiB 256KiB – 1 MiB 0.5 – 2 MiB 0.5 – 3 MiB
L3 0–8 MiB 0–16 MiB 0–32 MiB 0–32 MiB

See also

References

  1. ^ a b c "Next-gen Armv9 CPUs unleash compute performance - Announcements - Arm Community blogs - Arm Community". community.arm.com. 2022-06-28. Retrieved 2023-09-16.
  2. ^ "Second generation Arm Total Compute Solutions - Announcements - Arm Community blogs - Arm Community". community.arm.com. 2022-06-28. Retrieved 2023-09-16.
  3. ^ a b "Arm Cortex-X3 and Cortex-A715: Next-gen CPUs redefined". Android Authority. 2022-06-28. Retrieved 2022-10-08.
  4. ^ "Second generation Arm Total Compute Solutions - Announcements - Arm Community blogs - Arm Community". community.arm.com. 2022-06-28. Retrieved 2023-09-16.
  5. ^ "Arm Unveils Next-Gen Flagship Core: Cortex-X3". WikiChip Fuse. 2022-06-28. Retrieved 2023-09-16.
  6. ^ "Arm Cortex-X3 and Cortex-A715: Next-gen CPUs redefined". Android Authority. 2023-04-18. Retrieved 2023-09-16.
  7. ^ "ARM unveils Cortex-X3 (+25% peak performance) and Cortex-A715 (+20% efficiency)". GSMArena.com. Retrieved 2022-10-08.
  8. ^ "MediaTek Launches Flagship Dimensity 9200 Chipset for Incredible Performance and Unmatched Power Savings". MediaTek (Press release). 2022-11-08.
  9. ^ "Snapdragon 8 Gen 2 Defines a New Standard for Premium Smartphones". www.qualcomm.com. Hawaii: Qualcomm. 2022-11-15. Retrieved 2022-11-15.
  10. ^ a b "Arm Cortex-X4, A720, and A520: 2024 smartphone CPUs deep dive". Android Authority. 2023-05-29. Retrieved 2023-06-01.
  11. ^ a b Frumusanu, Andrei. "Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence". www.anandtech.com. Retrieved 2023-06-01.
  12. ^ Schor, David (2020-05-26). "Arm Cortex-X1: The First From The Cortex-X Custom Program". WikiChip Fuse. Retrieved 2023-05-30.
Allikas: https://en.wikipedia.org/wiki/ARM_Cortex-X3
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