Amazon stock jumps as AWS unveils new AI chip: Is Nvidia losing its grip as Google pushes TPUs and Amazon claims Trainium 3 is 50% cheaper and 4.4× faster for AI training?

Amazon stock jumps after AWS unveils its in-house AI chip, Trainium3. The company claims it is 4.4x faster than its previous generation. Energy efficiency improves fourfold, while memory bandwidth gets a major boost. Each UltraServer can hold up to 144 chips. Early tests suggest AI training costs drop up to 50% versus Nvidia GPUs. Investors cheered the news, pushing AMZN shares higher. Trainium3 promises faster, cheaper AI model training and inference.

Dec 2, 2025 - 21:00
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Amazon stock jumps as AWS unveils new AI chip: Is Nvidia losing its grip as Google pushes TPUs and Amazon claims Trainium 3 is 50% cheaper and 4.4× faster for AI training?
Amazon stock jumps after AWS unveils its in-house AI chip, Trainium3. The company claims it is 4.4x faster than its previous generation. Energy efficiency improves fourfold, while memory bandwidth gets a major boost. Each UltraServer can hold up to 144 chips. Early tests suggest AI training costs drop up to 50% versus Nvidia GPUs. Investors cheered the news, pushing AMZN shares higher. Trainium3 promises faster, cheaper AI model training and inference.

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