GPU 也將邁入膠水多核化,繼 NVIDIA 公 - 3C
By Dorothy
at 2021-01-04T21:36
at 2021-01-04T21:36
Table of Contents
GPU 也將邁入膠水多核化,繼 NVIDIA 公布研究計畫後 AMD 也註冊了 MCM GPU 專利
by Chevelle.fu
2021.01.04 11:13AM
雖然過去將多個晶圓之間以高速通道連接後封裝的 CPU 一度被看不起,也被戲稱膠水多
核技術,但 AMD 的 Zen 架構一步一步改善多晶圓之間的效率,以及顧及半導體電晶體容
納數量、良率與成本,現在採用多晶圓封裝 CPU 已經不再是吳下阿蒙,而日前 NVIDIA
也在 HotChip 大會公布多晶圓設計的 GPU 原型與研究成果,外界認為很可能即是未來代
號 Hopper 的新架構,根據最新的資訊指出, AMD 也申請了 MCM GPU 專利,意味未來
GPU 也將逐步邁向多晶圓封裝組合。
依照 AMD 所註冊的專利,其 MCM GPU 的設計理念與目前 Zen CPU 類似,將多個 GPU 晶
圓之間以 High Bandwidth Passive Crosslink 連接,並且每個晶圓都可直接與 CPU 溝
通,而各個 GPU 晶圓也都具備獨立的快取,每個 GPU 晶圓也可視為一顆獨立 GPU 。
藉由將晶圓模組化設計,意味著 GPU 廠商可以透過設計一顆基本單位的 GPU 延伸出多種
GPU 產品,且藉由較簡化的電晶體設計能夠使良率提高,進一步降低生產與設計成本,
不過對各 GPU 晶圓之間的協作與工作分配就相當重要,畢竟像是 Zen CPU 剛推出時也曾
遇到系統工作分配方式不佳導致效率下降的問題,但顧及研發成本與設計複雜度越來越高
的 CPU 與 GPU ,確實此類多晶圓封裝會成為未來主流。
根據較早的傳聞指出, AMD 可能會自 RDNA3 之後轉向 MCM 化,藉此與預期在相近時間
登場的 NVIDIA Hoper 抗衡,但也有可能 MCM 設計會率先出現在對效能更吃重的加速器
產品,而後再導入消費級產品。
https://www.cool3c.com/article/158970
AMD:膠水我很擅長,看看我Ryzen和TR要多少黏多少
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