Musk: Tesla AI5 chip bumped to 96GB as RAM cuts free supply for Optimus
elonmusk · x · 2026-10-02
Elon Musk detailed Tesla's memory tradeoffs for its in-house AI chips: to secure enough LPDDR volume and cut costs for Optimus production, AI5 RAM was halved to 72GB of LP5 and AI6 cut to a third (144GB LP6). He argues memory bandwidth, held constant, matters more than capacity, so performance impact is negligible. He then decided to nudge AI5 up to 96GB, since Tesla would otherwise be the only customer of LP5's min-RAM version.
Related event: Musk cuts Tesla AI5 chip memory to secure Optimus production(4 posts)→
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