ARM Cortex-X2


The ARM Cortex-X2 is a CPU implementing the ARMv9-A 64-bit instruction set designed by ARM Holdings' Austin design centre as part of ARM's Cortex-X Custom program.
It forms part of Arm's Total Compute Solutions 2021 along with Arm's Cortex-A710, Cortex-A510, Mali-G710 and CoreLink CI-700/NI-700.

Architecture changes in comparison with [ARM Cortex-X1]

The processor implements the following changes:
  • ARMv9.0
  • 10 cycle pipeline down from 11, created by reducing the dispatch stage from 2 cycles to 1
  • Reorder buffer increased by 30% from 224 entries to 288
  • dTLB increased by 20% from 40 entries to 48
  • SVE2 SIMD support
  • Bfloat16 data type support
  • Support for Aarch32 removed
  • DSU-110
  • * Up to 12 cores
  • * Up to 16M L3 cache
  • CoreLink CI-700/NI-700
  • * Up to 32MB SLC
Performance claims:
  • Comparing the Cortex-X2 to the Cortex-X1 with the same process,
clock speed, and 4MB of L3 cache :
  • *16% greater integer performance / IPC
  • *100% greater ML performance
  • 30% peak performance improvement over the Cortex-X1 in smartphones
  • 40% faster than an Intel Core i5-1135G7 at 15W

    Architecture comparison

Usage