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ARM Cortex-A720

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ARM Cortex-A720
產品化2023
設計團隊ARM Ltd.
微架構ARM Cortex-A720
指令集架構ARMv9.2-A
一級快取每个核心 64/128 KiB (具有奇偶校验的32/64 KiB I-cache,32/64 KiB D-cache)
二級快取每个核心 128–512 KiB
三級快取512 KiB – 32 MiB (可选)
上代產品ARM Cortex-A715
繼任產品ARM Cortex-A725
相關產品ARM Cortex-X4

ARM Cortex-A720是在TCS23(全面计算解决方案)上公布的Arm的一款CPU核心型号[1],它是CPU核心ARM Cortex-A715的继任者。Cortex-A700 CPU核心系列通常专注于高性能和能效,这款CPU核心可以与其家族中的其他核心如ARM Cortex-X4或者和ARM Cortex-A520配合使用,形成一个CPU集群(簇)。它可以作为“big”核心或“LITTLE”核心使用。[2][3][4][5][6][7]

ARM Cortex-A715相比的架构变化

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  • Cortex-A715相比,峰值性能提高了15%
  • 可以缩小到与Cortex-A78相同的尺寸,同时性能提高了10%
  • 二级缓存命中延迟减少到9个周期(从10个周期减少)
  • 预测错误延迟减少到1个周期(从12个周期减少)[4]
  • 二级缓存带宽增加了2倍
  • 与A78相比,没有面积成本的面积优化配置
  • DSU-120
    • 最多可支持14个核心(从12个核心增加)
    • 共享三级缓存最多可达32 MiB(从16 MiB增加)
  • 更新至ARMv9.2

微架构对比

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微架构 Cortex-A78 Cortex-A710 Cortex-A715 Cortex-A720
峰值时钟频率 ~3.0 GHz
解码宽度 4 5
派遣 6/周期 5/周期[8] ?
最大在途指令数 160 ? 192+[9] ?
L0 (Mops条目) 1536[10][11][12] 0
L1-I + L1-D 32/64+32/64 KiB
L2 128–512 KiB
L3 0–8 MiB 0–16 MiB 0–32 MiB
AArch 32-bit和64-bit 64-bit
指令集架构 ARMv8.2-A ARMv9.0-A ARMv9.2-A

另见

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参考资料

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  1. ^ Dahad, Nitin. Arm Total Compute Solution 2023 targets premium smartphones. Embedded.com. 2023-06-02 [2024-01-17] (美国英语). 
  2. ^ New Arm Cortex-A720 and Cortex-A520 CPUs launched - Announcements - Arm Community blogs - Arm Community. community.arm.com. 2023-05-29 [2023-09-16] (英语). 
  3. ^ Cortex-A720. developer.arm.com. [2023-09-16]. 
  4. ^ 4.0 4.1 Bonshor, Gavin. Arm Unveils 2023 Mobile CPU Core Designs: Cortex-X4, A720, and A520 - the Armv9.2 Family. www.anandtech.com. [2023-06-06]. 
  5. ^ A closer look at ARM’s new Cortex-A75 and Cortex-A55 CPUs. Android Authority. 2017-05-31 [2023-06-06] (英语). 
  6. ^ Arm Introduces A New Big Core, The Cortex-A720. WikiChip Fuse. 2023-05-28 [2023-06-06] (美国英语). 
  7. ^ TCS23: The complete platform for consumer computing - Announcements - Arm Community blogs - Arm Community. community.arm.com. 2023-05-29 [2023-09-16] (英语). 
  8. ^ Arm Cortex-X2, A710, and A510 deep dive: New Armv9 CPU designs explained. Android Authority. 2021-05-25 [2023-06-06] (英语). 
  9. ^ Arm Introduces The Cortex-A715. WikiChip Fuse. 2022-06-28 [2023-09-16] (美国英语). 
  10. ^ Frumusanu, Andrei. Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence. www.anandtech.com. [2023-06-06]. 
  11. ^ Documentation – Arm Developer. developer.arm.com. [2023-06-06]. 
  12. ^ Documentation – Arm Developer. developer.arm.com. [2023-06-06]. 
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ARM Cortex-A720
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