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ARM Cortex-X2
Microprocessor core model by ARM

The ARM Cortex-X2 is a central processing unit implementing the ARMv9-A 64-bit instruction set designed by ARM Holdings' Austin design centre as part of ARM's Cortex-X Custom (CXC) program. It forms part of Arm's Total Compute Solutions 2021 (TCS21) along with Arm's Cortex-A710, Cortex-A510, Mali-G710 and CoreLink CI-700/NI-700.

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Architecture changes in comparison with ARM Cortex-X1

The processor implements the following changes:345

  • 10 cycle pipeline down from 11, created by reducing the dispatch stage from 2 cycles to 1
  • Reorder buffer (ROB) 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 from 8 cores)
    • Up to 16M L3 cache (up from 8 MB)
  • CoreLink CI-700/NI-700
    • Up to 32MB SLC
  • ARMv9.0

Performance claims:

  • Comparing the Cortex-X2 to the Cortex-X1 with the same process, clock speed, and 4MB of L3 cache (also known as ISO-process):
    • 16% greater integer performance / IPC
    • 100% greater ML performance
  • 30% peak performance improvement over the Cortex-X1 in smartphones (3.3 GHz, 1MB L2, 8MB L3)
  • 40% faster than an Intel Core i5-1135G7 at 15W (3.5 GHz, 1MB L2, 16MB L3)

Usage

See also

References

  1. Ltd, Arm. "Cortex-X Custom CPU program". Arm | The Architecture for the Digital World. Retrieved 2021-12-02. https://www.arm.com/products/cortex-x ↩

  2. "Arm Total Compute solutions powering decade of compute - Architectures and Processors blog - Arm Community blogs - Arm Community". community.arm.com. 2021-05-25. Retrieved 2023-09-16. https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/total-compute-solutions ↩

  3. "Arm Launches Its New Flagship Performance Armv9 Core: Cortex-X2". WikiChip Fuse. 2021-05-25. Retrieved 2021-12-03. https://fuse.wikichip.org/news/5269/arm-launches-its-new-flagship-performance-armv9-core-cortex-x2/ ↩

  4. Frumusanu, Andrei. "Arm Announces Mobile Armv9 CPU Microarchitectures: Cortex-X2, Cortex-A710 & Cortex-A510". www.anandtech.com. Retrieved 2021-12-03. https://www.anandtech.com/show/16693/arm-announces-mobile-armv9-cpu-microarchitectures-cortexx2-cortexa710-cortexa510 ↩

  5. "Documentation – Arm Developer". developer.arm.com. Archived from the original on 2021-12-03. Retrieved 2021-12-03. https://developer.arm.com/documentation/101803/0200/ ↩

  6. "Summit Dimensity9000| Latest 5G Snapdragon Processor | Qualcomm". i.mediatek.com. 17 November 2021. Retrieved 2021-12-02. https://www.qualcomm.com/products/snapdragon-8-gen-1-mobile-platform ↩

  7. "Snapdragon 7+ Gen 2 Mobile Platform". Qualcomm. Retrieved 17 March 2023. https://www.qualcomm.com/products/application/smartphones/snapdragon-7-series-mobile-platforms/snapdragon-7-plus-gen-2-mobile-platform ↩

  8. "Qualcomm Snapdragon 8 Gen 1 Mobile Platform | Latest 5G Snapdragon Processor | Qualcomm". www.qualcomm.com. 17 November 2021. Retrieved 2021-12-02. https://www.qualcomm.com/products/snapdragon-8-gen-1-mobile-platform ↩

  9. "Exynos 2200 | Processor". https://www.samsung.com/semiconductor/minisite/exynos/products/mobileprocessor/exynos-2200/ ↩