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{{專家|subject=計算機科學|subject2=電子學}}
{{NoteTA|G1=IT}}
{{Infobox CPU|name=ARM Cortex-X1|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]])}} per core|l2cache={{Nowrap|512–1024 KiB}} 每核|l3cache={{Nowrap|512 KiB – 8 MiB}} {{Small|(optional)}}|application=|size-to=|qpi-fastest=|microarch=ARM Cortex-X1|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]] dot product
|numcores=1–4 per cluster|pack1=|sock1=
|core1=|brand1=|variant=[[ARM Cortex-A78]]
|predecessor=[[ARM Cortex-A77]]|qpi-slow-unit=|qpi-slowest=|image=|code=|image_size=|alt=|caption=|produced-start=2020|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-X2]]}}

'''ARM Cortex-X1'''是一個基於[[ARM架構|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，而且是ARM Cortex-X 定制 (CXC) 計劃的一部分<ref name=":0">{{Cite web|title=Introducing the Arm Cortex-X Custom program|url=https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-cortex-x-custom-program|access-date=2020-06-18|website=community.arm.com|language=en|archive-date=2021-05-14|archive-url=https://web.archive.org/web/20210514140804/https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-cortex-x-custom-program}}</ref><ref name=":1">{{Cite web|title=Cortex-X Custom CPU program|url=https://www.arm.com/products/cortex-x|access-date=2020-06-18|last=Ltd|first=Arm|website=Arm {{!}} The Architecture for the Digital World|language=en|archive-date=2022-04-16|archive-url=https://web.archive.org/web/20220416164631/https://www.arm.com/products/cortex-x}}</ref>。

== 設計 ==
ARM Cortex-X1設計基於[[ARM Cortex-A78]]，但經過重新設計，因爲只是為了提高性能，因此沒有考慮到性能、功耗和面積 (PPA) 的平衡。[[安謀控股|ARM]]表示，ARM Cortex-X1提供比[[ARM Cortex-A77]]的[[算術邏輯單元|整數]]性能提高 30%和機器學習性能提高100%<ref name=":22">{{Cite web|title=Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence|url=https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging|access-date=2020-06-18|last=Frumusanu|first=Andrei|website=www.anandtech.com|archive-date=2022-04-08|archive-url=https://web.archive.org/web/20220408045418/https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging}}</ref><ref name=":32">{{Cite web|title=Arm Cortex-X1: The First From The Cortex-X Custom Program|url=https://fuse.wikichip.org/news/3543/arm-cortex-x1-the-first-from-the-cortex-x-custom-program/|access-date=2020-06-18|date=2020-05-26|website=WikiChip Fuse|language=en-US|archive-date=2022-04-03|archive-url=https://web.archive.org/web/20220403212835/https://fuse.wikichip.org/news/3543/arm-cortex-x1-the-first-from-the-cortex-x-custom-program/}}</ref><ref name=":42">{{Cite web|title=Arm Unleashes CPU Performance With Cortex-X1|url=https://www.forbes.com/sites/tiriasresearch/2020/05/26/arm-unleashes-cpu-performance-with-cortex-x1/|access-date=2020-06-18|last=McGregor|first=Jim|website=Forbes|language=en|archive-date=2022-04-03|archive-url=https://web.archive.org/web/20220403212838/https://www.forbes.com/sites/tiriasresearch/2020/05/26/arm-unleashes-cpu-performance-with-cortex-x1/}}</ref><ref name=":52">{{Cite web|title=Arm Cortex-X1 and Cortex-A78 CPUs: Big cores with big differences|url=https://www.androidauthority.com/arm-cortex-x1-cortex-a78-1119666/|access-date=2020-06-18|date=2020-05-26|website=Android Authority|language=en-US|archive-date=2022-03-31|archive-url=https://web.archive.org/web/20220331092345/https://www.androidauthority.com/arm-cortex-x1-cortex-a78-1119666/}}</ref>。

ARM Cortex-X1擁有5條[[超純量]][[乱序执行|亂序執行]]解碼流水線並包含3K macro-OP（MOPs）緩存。X1每個週期可以獲取5條指令和8Mops，並且每個週期可以重命名和調度8Mops和16µops（Micro-operation）。[[乱序执行|亂序執行]]窗口大小為224位，[[後端匯流排|後端]]有15個執行端，流水線深度為13個階段，執行延遲（execution latencies）為10個階段，X1還具有4x128b SIMD單元<ref name=":2">{{Cite web|title=Arm's New Cortex-A78 and Cortex-X1 Microarchitectures: An Efficiency and Performance Divergence|url=https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging|access-date=2020-06-18|last=Frumusanu|first=Andrei|website=www.anandtech.com|archive-date=2022-04-08|archive-url=https://web.archive.org/web/20220408045418/https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging}}</ref><ref name=":3">{{Cite web|title=Arm Cortex-X1: The First From The Cortex-X Custom Program|url=https://fuse.wikichip.org/news/3543/arm-cortex-x1-the-first-from-the-cortex-x-custom-program/|access-date=2020-06-18|date=2020-05-26|website=WikiChip Fuse|language=en-US|archive-date=2022-04-03|archive-url=https://web.archive.org/web/20220403212835/https://fuse.wikichip.org/news/3543/arm-cortex-x1-the-first-from-the-cortex-x-custom-program/}}</ref><ref name=":4">{{Cite web|title=Arm Unleashes CPU Performance With Cortex-X1|url=https://www.forbes.com/sites/tiriasresearch/2020/05/26/arm-unleashes-cpu-performance-with-cortex-x1/|access-date=2020-06-18|last=McGregor|first=Jim|website=Forbes|language=en|archive-date=2022-04-03|archive-url=https://web.archive.org/web/20220403212838/https://www.forbes.com/sites/tiriasresearch/2020/05/26/arm-unleashes-cpu-performance-with-cortex-x1/}}</ref><ref name=":5">{{Cite web|title=Arm Cortex-X1 and Cortex-A78 CPUs: Big cores with big differences|url=https://www.androidauthority.com/arm-cortex-x1-cortex-a78-1119666/|access-date=2020-06-18|date=2020-05-26|website=Android Authority|language=en-US|archive-date=2022-03-31|archive-url=https://web.archive.org/web/20220331092345/https://www.androidauthority.com/arm-cortex-x1-cortex-a78-1119666/}}</ref>。

ARM Cortex-X1支持[[Big.LITTLE|DynamIQ]]技術，與[[ARM Cortex-A78]]和[[ARM Cortex-A55]]結合使用時，可用作高性能大核<ref name=":02">{{Cite web|title=Introducing the Arm Cortex-X Custom program|url=https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-cortex-x-custom-program|access-date=2020-06-18|website=community.arm.com|language=en|archive-date=2021-05-14|archive-url=https://web.archive.org/web/20210514140804/https://community.arm.com/developer/ip-products/processors/b/processors-ip-blog/posts/arm-cortex-x-custom-program}}</ref><ref name=":12">{{Cite web|title=Cortex-X Custom CPU program|url=https://www.arm.com/products/cortex-x|access-date=2020-06-18|last=Ltd|first=Arm|website=Arm {{!}} The Architecture for the Digital World|language=en|archive-date=2022-04-16|archive-url=https://web.archive.org/web/20220416164631/https://www.arm.com/products/cortex-x}}</ref>。

== 與ARM Cortex-A78的架構變化 ==

* 性能提升約20% (約30%（A77）)<ref>{{Cite web|title=Cortex-X1 - Microarchitectures - ARM - WikiChip|url=https://en.wikichip.org/wiki/arm_holdings/microarchitectures/cortex-x1|access-date=2021-02-13|website=en.wikichip.org|language=en|archive-date=2022-02-14|archive-url=https://web.archive.org/web/20220214103230/https://en.wikichip.org/wiki/arm_holdings/microarchitectures/cortex-x1}}</ref>
** 整數性能提高30%
** 機器學習性能提高100%
* [[乱序执行|亂序執行]]窗口大小已增加到 224位 ( A78有160位)
* SIMD 單元提升到4x128b (A78有2x128b)
* 面積增加15%
* 5條解碼流水線 (A78有4條)
* 8 MOPs/cycle 解碼緩存帶寬 (A78是 6 MOPs/cycle)
* B L1D 緩存+ 64 KB L1I緩存 ( A78是32/64 KB L1)
* L2緩存有1MB/每核 (A78最大支援512KB/每核)
* L3緩存有8MB (A78最大支援4MB)

== 對外授權 ==
ARM Cortex-X1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 ==

* [[三星集团|Samsung]] [[三星Exynos|Exynos 2100]]<ref>{{Cite web|title=Exynos 2100 5G Mobile Processor: Specs, Features {{!}} Samsung|url=https://www.samsung.com/semiconductor/minisite/exynos/products/mobileprocessor/exynos-2100/|access-date=2021-01-13|website=Samsung Semiconductor|language=en|archive-date=2022-01-06|archive-url=https://web.archive.org/web/20220106182055/https://www.samsung.com/semiconductor/minisite/exynos/products/mobileprocessor/exynos-2100/}}</ref>
* [[高通驍龍元件列表|Qualcomm Snapdragon 888]](+)<ref>{{Cite web|title=Qualcomm Snapdragon 888 5G Mobile Platform {{!}} Latest 5G Snapdragon Processor {{!}} Qualcomm|url=https://www.qualcomm.com/products/snapdragon-888-5g-mobile-platform|access-date=2021-01-13|website=www.qualcomm.com|archive-date=2021-06-01|archive-url=https://web.archive.org/web/20210601172132/https://www.qualcomm.com/products/snapdragon-888-5g-mobile-platform}}</ref>
* [[Google Tensor]]<ref>{{Cite web|title=The “Google Silicon” team gives us a tour of the Pixel 6’s Tensor SoC|url=https://arstechnica.com/gadgets/2021/10/the-google-silicon-team-gives-us-a-tour-of-the-pixel-6s-tensor-soc/|date=2021-10-19|last=Amadeo|first=Ron|website=[[Ars Technica]]|access-date=2022-03-26|archive-date=2021-10-19|archive-url=https://web.archive.org/web/20211019170500/https://arstechnica.com/gadgets/2021/10/the-google-silicon-team-gives-us-a-tour-of-the-pixel-6s-tensor-soc/}}</ref>

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

ARM Cortex-X1 - 版本历史

~2026-19096-82：​增加或調整分類

~2026-19096-82：增加或調整分類