ARM Cortex-X2
The ARM Cortex-X2 is a microarchitecture 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.[2]
| General information | |
|---|---|
| Launched | 2021 |
| Designed by | ARM Ltd. |
| Performance | |
| Max. CPU clock rate | 2.84 GHz[1] to 3.92 GHz[1] |
| Cache | |
| L1 cache | 128 KiB (64 KiB I-cache with parity, 64 KiB D-cache) per core |
| L2 cache | 512–1024 KiB per core |
| L3 cache | 512 KiB – 8 MiB (optional) |
| Architecture and classification | |
| Architecture | ARMv9-A |
| Microarchitecture | ARM Cortex-X2 |
| Products, models, variants | |
| Product code name(s) |
|
| Variant(s) | |
| History | |
| Predecessor | ARM Cortex-X1 |
Architecture changes in comparison with ARM Cortex-X1
The processor implements the following changes:[3][4][5]
- 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
- Comparing the Cortex-X2 with 8MB of L3 cache to the Cortex-X1 with 4MB of L3 cache:
- 16% greater integer performance
- 100% greater ML performance
Usage
- MediaTek Dimensity 9000[6]
- Qualcomm Snapdragon 8 Gen 1[7]
- Samsung Exynos 2200[8]
See also
- ARM Cortex-A710, related high performance microarchitecture
References
- Dr. Ian Cutress (December 14, 2021). "The Snapdragon 8 Gen 1 Performance Preview: Sizing Up Cortex-X2". anandtech.com. AnandTech. Retrieved March 3, 2022.
- Ltd, Arm. "Cortex-X Custom CPU program". Arm | The Architecture for the Digital World. Retrieved 2021-12-02.
- "Arm Launches Its New Flagship Performance Armv9 Core: Cortex-X2". WikiChip Fuse. 2021-05-25. Retrieved 2021-12-03.
- Frumusanu, Andrei. "Arm Announces Mobile Armv9 CPU Microarchitectures: Cortex-X2, Cortex-A710 & Cortex-A510". www.anandtech.com. Retrieved 2021-12-03.
- "Documentation – Arm Developer". developer.arm.com. Archived from the original on 2021-12-03. Retrieved 2021-12-03.
- "Summit Dimensity9000| Latest 5G Snapdragon Processor | Qualcomm". i.mediatek.com. 17 November 2021. Retrieved 2021-12-02.
- "Qualcomm Snapdragon 8 Gen 1 Mobile Platform | Latest 5G Snapdragon Processor | Qualcomm". www.qualcomm.com. 17 November 2021. Retrieved 2021-12-02.
- "Exynos 2200 | Processor".
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