AWS 推出了 Graviton3 的機種
source link: https://blog.gslin.org/archives/2023/02/15/11063/aws-%e6%8e%a8%e5%87%ba%e4%ba%86-graviton3-%e7%9a%84%e6%a9%9f%e7%a8%ae/
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AWS 推出了 Graviton3 的機種
Amazon EC2 推出了 Graviton3 的機種：「New Graviton3-Based General Purpose (m7g) and Memory-Optimized (r7g) Amazon EC2 Instances」。
第一波只有一般的 m7g 與記憶體型的 r7g，而計算型的 c7g 大家在 Twitter 上猜應該晚點會放出消息。
目前只在歐美的 us-east-1、us-east-2、us-west-2 與 eu-west-1 區提供，亞洲目前都還沒有這些機種可以用：
M7g and R7g instances are available today in the US East (N. Virginia), US East (Ohio), US West (Oregon), and Europe (Ireland) AWS Regions in On-Demand, Spot, Reserved Instance, and Savings Plan form.
官方宣稱比 Graviton2 的 m6g & r6g 多了 25% 的效能，不過我另外查了一下 us-east-1 上的價錢，也貴了 6% 左右，如果依照官方宣稱的數字計算，大約是 18% 左右的 CP 值提昇，對於有實際上跑滿的 CPU 的人是個不錯的效能提昇：
Today I am happy to tell you about the newest Amazon EC2 instance types, the M7g and the R7g. Both types are powered by the latest generation AWS Graviton3 processors, and are designed to deliver up to 25% better performance than the equivalent sixth-generation (M6g and R6g) instances, making them the best performers in EC2.
裡面有提到在 Graviton3 的一個架構上的大改變是記憶體從 DDR4 變到 DDR5，這使得記憶體的傳輸頻寬提昇了 50%：
Both types of instances are equipped with DDR5 memory, which provides up to 50% higher memory bandwidth than the DDR4 memory used in previous generations.
接下來是看有沒有下放到 t 系列的計畫，像是 t5g 之類的，有的話再用看看好了，不過 blog 這台已經買了三年 RI，等到期間滿了之後說不定都有 Graviton4 或是 Graviton5 了...
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