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ARM Cortex-X3

CPU core From Wikipedia, the free encyclopedia

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

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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.[3]

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Architecture changes in comparison with ARM Cortex-X2

The processor implements the following changes:[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).[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).[2]
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Usage

Architecture comparison

"Prime" core
More information uArch, Cortex-A78 ...

See also

References

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