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{{專家|subject=計算機科學|subject2=電子學}}
{{Infobox CPU|name=ARM Cortex-A76|size-from=|qpi-fast-unit=|dmi-slowest=|dmi-fastest=|dmi-slow-unit=|dmi-fast-unit=|l1cache={{Nowrap|128 [[Kibibyte|KiB]]}} {{Small|({{Nowrap|64 KiB}} [[I-cache]] with parity, {{Nowrap|64 KiB}} [[D-cache]])}}每核|l2cache={{Nowrap|128-512 KiB}} 每核心|l3cache={{Nowrap|512 KiB-4 MiB}} {{Small|(optional)}}|application=|size-to=|qpi-fastest=|microarch=|arch=A64, A32, and T32 {{Small|(at the EL0 only)}}|extensions=[[ARMv8.1-A]], [[ARMv8.2-A]], Cryptography, RAS, [[ARMv8.3-A]][[輕型目錄訪問協議|LDAPR]]指令, [[ARMv8.4-A]] 點積指令
|numcores=1–4 per cluster|pack1=|sock1=
|core1=|brand1=|variant=[[Arm Neoverse N1]]
|predecessor=[[ARM Cortex-A75]]<br>[[ARM Cortex-A73]]<br>[[ARM Cortex-A72]]|qpi-slow-unit=|qpi-slowest=|image=|code=|image_size=|alt=|caption=|produced-start=2018<ref>{{cite news |last1=Shrout |first1=Ryan |last2=Moorhead |first2=Patrick |title=Ep 23 - 5/31/18 - The Future of Arm with Nandan Nayampally |url=http://www.thetechanalysts.com/home/2018/05/ep-23-the-future-of-arm-with-nandan-nayampal |accessdate=1 June 2018 |publisher=The Tech Analysts Podcast |date=31 May 2018 |archive-date=2018-06-28 |archive-url=https://web.archive.org/web/20180628075257/http://www.thetechanalysts.com/home/2018/05/ep-23-the-future-of-arm-with-nandan-nayampal }}</ref>|produced-end=|soldby=|designfirm=[[安謀控股]]|manuf1=|cpuid=|slowest=|hypertransport-fast-unit=|fastest=3.0 GHz in phones and 3.3 GHz in tablets/laptops|slow-unit=|fast-unit=|fsb-slowest=|fsb-fastest=|fsb-slow-unit=|fsb-fast-unit=|hypertransport-slowest=|hypertransport-fastest=|hypertransport-slow-unit=|successor=[[ARM Cortex-A77]]}}

'''ARM Cortex-A76'''是一個基於[[ARMv8.2-A]]64位[[指令集架構]]設計的[[中央处理器|中央處理器]]以及[[ARM處理器內核列表|ARM內核]]。由[[安謀控股]]旗下[[奧斯汀]]設計中心的奧斯汀團隊設計。

== 設計 ==
[[安謀控股|ARM]]表示，與上一代的[[ARM Cortex-A75]]相比，[[算術邏輯單元|整數]]和[[浮点运算器|浮點性能]]分別提高了25%和35%<ref name="anand">{{cite news|last1=Frumusanu|first1=Andrei|title=Arm Cortex-A76 CPU Unveiled|url=https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse|accessdate=1 June 2018|publisher=Anandtech|date=31 May 2018|archive-date=2018-06-01|archive-url=https://web.archive.org/web/20180601043138/https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse}}</ref>。ARM Cortex-A76是[[ARM Cortex-A73]]和[[ARM Cortex-A75]]的繼任產品，但基於全新設計。

ARM Cortex-A76擁有四條[[超純量]][[乱序执行|亂序執行]]解碼流水線令到A76可以同時讀取4條指令，並且重命名和調度4Mops（每秒數百萬次操作），每個週期8條µops（Micro-operation）。[[乱序执行|亂序執行]]窗口大小為128位。後端是8個執行端，流水線深度為13階段，執行延遲（execution latencies）為11個階段<ref name="anand2">{{cite news|last1=Frumusanu|first1=Andrei|title=Arm Cortex-A76 CPU Unveiled|url=https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse|accessdate=1 June 2018|publisher=Anandtech|date=31 May 2018|archive-date=2018-06-01|archive-url=https://web.archive.org/web/20180601043138/https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse}}</ref><ref>{{Cite web|title=Arm Unveils Cortex-A77, Emphasizes Single-Thread Performance|url=https://fuse.wikichip.org/news/2339/arm-unveils-cortex-a77-emphasizes-single-thread-performance/|access-date=2020-06-18|date=2019-05-26|website=WikiChip Fuse|language=en-US|archive-date=2019-05-28|archive-url=https://web.archive.org/web/20190528085003/https://fuse.wikichip.org/news/2339/arm-unveils-cortex-a77-emphasizes-single-thread-performance/}}</ref>。

ARM Cortex-A76支持非[[特权 (Windows)|特權]]32位應用程序，但[[特权 (Windows)|特權]][[应用程序|應用程序]]必須使用64 位[[ARM架構|ARMv8-A]][[指令集架構|ISA]]，A76還支持讀取[[轻型目录访问协议|LDAPR]]指令 (ARMv8.3-A)，[[點積|點積指令]] (ARMv8.4-A)，PSTATE安全跳過推測存儲（PSTATE Speculative Store Bypass Safe,SSBS）和[[推测执行|推測]]屏障指令（CSDB、SSBB、PSSBB）（ARMv8.5-A）<ref>{{Cite web|title=ARM documentation set for Cortex-A76|url=http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.100798_0300_00_en/index.html|access-date=2019-06-15|website=infocenter.arm.com}}</ref>。

ARM Cortex-A76內存帶寬相對於[[ARM Cortex-A75]]增加了90%<ref>{{cite news|last1=Armasu|first1=Lucian|title=Arm's Cortex-A76 Could Be The First True Challenger To x86 Chips On Laptops|url=https://www.tomshardware.com/news/cortex-76-high-laptop-performance,37158.html|accessdate=1 June 2018|publisher=Tom's Hardware|date=31 May 2018}}</ref><ref>{{cite news|last1=Triggs|first1=Robert|title=Arm Cortex-A76 CPU deep dive|url=https://www.androidauthority.com/cortex-a76-deep-dive-870896/|accessdate=1 June 2018|publisher=Android Authority|date=31 May 2018|archive-date=2021-11-26|archive-url=https://web.archive.org/web/20211126002949/https://www.androidauthority.com/cortex-a76-deep-dive-870896/}}</ref>。[[安謀控股|ARM]]表示，A76的性能預計將是[[ARM Cortex-A73]]的兩倍，并且主要針對在移動應用中的性能。A76性能針對[[筆記型電腦|筆記本電腦]]級別，甚至包括[[Microsoft Windows|Windows]]設備<ref>{{cite news|last1=Hruska|first1=Joel|title=ARM’s New Cortex-A76 SoC Targets Windows Laptop Market|url=https://www.extremetech.com/mobile/270362-arm-cortex-a76-targets-laptop-market|accessdate=1 June 2018|publisher=Extreme Tech|date=31 May 2018|archive-date=2018-06-04|archive-url=https://web.archive.org/web/20180604002027/https://www.extremetech.com/mobile/270362-arm-cortex-a76-targets-laptop-market}}</ref>，并可與[[英特尔|英特爾]]的[[Kaby Lake]]競爭<ref>{{cite news|last1=Bright|first1=Peter|title=ARM promises laptop-level performance in 2019|url=https://arstechnica.com/gadgets/2018/06/arm-promises-laptop-level-performance-in-2019/|accessdate=1 June 2018|publisher=Ars Technica|date=1 June 2018|archive-date=2022-03-21|archive-url=https://web.archive.org/web/20220321152044/https://arstechnica.com/gadgets/2018/06/arm-promises-laptop-level-performance-in-2019/}}</ref>。

ARM Cortex-A76支援[[安謀控股|ARM]]的[[Big.LITTLE|DynamIQ]]技術，與[[ARM Cortex-A55]]節能小核結合使用時，有望作為高性能大核使用<ref name="anand3">{{cite news|last1=Frumusanu|first1=Andrei|title=Arm Cortex-A76 CPU Unveiled|url=https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse|accessdate=1 June 2018|publisher=Anandtech|date=31 May 2018|archive-date=2018-06-01|archive-url=https://web.archive.org/web/20180601043138/https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse}}</ref>。

=== Neoverse N1 ===
2019年2月20日，[[安謀控股|ARM]]宣布基於Cortex-A76重新設計用於基礎設施或者服務器應用的Neoverse N1[[微架構]]（代號為 Ares）。該設計支持多達64或128個Neoverse N1核心<ref>{{Cite web|title=Arm Announces Neoverse N1 & E1 Platforms & CPUs: Enabling A Huge Jump In Infrastructure Performance|url=https://www.anandtech.com/show/13959/arm-announces-neoverse-n1-platform|access-date=2020-06-17|last=Frumusanu|first=Andrei|website=www.anandtech.com|archive-date=2020-09-24|archive-url=https://web.archive.org/web/20200924090159/https://www.anandtech.com/show/13959/arm-announces-neoverse-n1-platform}}</ref><ref>{{Cite web|title=Arm Launches New Neoverse N1 and E1 Server Cores|url=https://fuse.wikichip.org/news/2075/arm-launches-new-neoverse-n1-and-e1-server-cores/|access-date=2020-06-17|date=2019-02-20|website=WikiChip Fuse|language=en-US|archive-date=2021-10-22|archive-url=https://web.archive.org/web/20211022091333/https://fuse.wikichip.org/news/2075/arm-launches-new-neoverse-n1-and-e1-server-cores/}}</ref>。

ARM Cortex-A76 的顯著變化：

* 具有4週期LD指令（LD-use）連貫指令獲取請求（I-cache）和加載和存儲請求（D-cache）
* L2 緩存：每核心512–1024kB
* 使用網狀互連架構（Mesh interconnect）而不是再使用每個集群 1-4 個核心

== 對外授權 ==
ARM Cortex-A76可作為[[半导体IP核|半導體IP核]]授權給被許可方（例如[[高通]]和[[聯發科技|聯發科]]），其設計使其適合與其他IP內核（例如 [[圖形處理器|GPU]]、[[數位訊號處理器]]（DSP）、顯示控制器）集成到一個[[单片系统|片上系統]]（SoC）中。

== 上市產品 ==
ARM Cortex-A76首次用於[[海思半導體|海思]][[麒麟980]]<ref>{{Cite web|title=HiSilicon Announces The Kirin 980: First A76, G76 on 7nm|url=https://www.anandtech.com/show/13298/hisilicon-announces-the-kirin-980-first-a76-g76-on-7nm|access-date=2020-11-13|last=Frumusanu|first=Andrei|website=www.anandtech.com|archive-date=2022-04-22|archive-url=https://web.archive.org/web/20220422201433/https://www.anandtech.com/show/13298/hisilicon-announces-the-kirin-980-first-a76-g76-on-7nm}}</ref>。

ARM 還與高通合作開發了 Cortex-A76 的半定製版本在高通的高端[[Kryo (CPU)|Kryo 495]] ([[高通驍龍元件列表|Snapdragon 8cx]])/[[Kryo (CPU)|Kryo 485]] ([[高通驍龍元件列表|Snapdragon 855]] 和 [[高通驍龍元件列表|855 Plus]]) 中使用，以及高通的中檔[[Kryo (CPU)|Kryo 460]]([[高通驍龍元件列表|Snapdragon 675]]) 和[[Kryo (CPU)|Kryo 470]]([[高通驍龍元件列表|Snapdragon 730]]) [[CPU]]。高通所做的修改之一便是增加[[重排序缓冲区|重排序緩衝區]]以增加[[乱序执行|亂序執行]]窗口大小<ref>{{Cite web|title=Arm's New Cortex-A77 CPU Micro-architecture: Evolving Performance|url=https://www.anandtech.com/show/14384/arm-announces-cortexa77-cpu-ip|access-date=2019-06-16|last=Frumusanu|first=Andrei|website=www.anandtech.com|archive-date=2019-06-15|archive-url=https://web.archive.org/web/20190615151304/https://www.anandtech.com/show/14384/arm-announces-cortexa77-cpu-ip/}}</ref>。

ARM Cortex-A76也用於[[三星Exynos|Exynos 990]]和Exynos Auto V９，還有[[聯發科技|聯發科]][[聯發科技曦力|Helio G90/G90T/G95]]和[[聯發科技天璣|天璣 800]]和[[聯發科技天璣|天璣 820]]以及[[海思半導體|海思麒麟985 5G]]和[[海思半導體|麒麟990 4G/990 5G/990E 5G]]<ref>{{Cite web|title=MediaTek Helio G90 Series|url=https://www.mediatek.com/products/smartphones/mediatek-helio-g90-series|access-date=2020-06-18|date=2020-06-18|last=MediaTek|website=MediaTek|language=en|archive-date=2020-09-24|archive-url=https://web.archive.org/web/20200924145412/https://www.mediatek.com/products/smartphones/mediatek-helio-g90-series}}</ref><ref>{{Cite web|title=MediaTek Dimensity 800|url=https://www.mediatek.com/products/smartphones/dimensity-800|access-date=2020-06-18|date=2020-06-18|last=MediaTek|website=MediaTek|language=en|archive-date=2020-09-24|archive-url=https://web.archive.org/web/20200924133657/https://www.mediatek.com/products/smartphones/dimensity-800}}</ref><ref>{{Cite web|title=MediaTek Dimensity 820|url=https://www.mediatek.com/products/smartphones/dimensity-820|access-date=2020-06-18|date=2020-06-18|last=MediaTek|website=MediaTek|language=en|archive-date=2020-10-21|archive-url=https://web.archive.org/web/20201021173428/https://www.mediatek.com/products/smartphones/dimensity-820}}</ref>。

== 參考文獻 ==
{{Reflist|30em}}
[[Category:微架构]]
[[Category:ARM架構]]

ARM Cortex-A76 - 版本历史

~2026-19096-82：​增加或調整分類

~2026-19096-82：增加或調整分類