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▶ 6:05 · $NVDA · Why Positron AI is Choosing LPDDR over HBM for Next-Gen LLM | Researcher Conversations at GTC
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Why Positron AI is Choosing LPDDR over HBM for Next-Gen LLM | Researcher Conversations at GTC

2026-04-16 · 2 company · 4 thematic
sentiment
1 bull1 bear0 neu
speakers
thomas summers

Founder and CEO of Positron, a chip startup developing inference accelerators using systolic arrays and LPDDR memory; previously shipped FPGA-based Archer product and announced Oracle partnership.

quote
“Going from Hopper to Blackwall actually had the ratio of your um matrix matrix, your your gem performance um uh that's when when you go to matrix vector on on Hopper it was a 16 to to one ratio of matrix matrix matrix vector, which is your…”
—thomas summers
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Nvidia's Blackwell worsened matrix-vector ratio to 32:1, neglecting inference efficiency
Nvidia's architectural focus on dense matrix-matrix training workloads caused the matrix-vector performance ratio to degrade from 16:1 on Hopper to 32:1 on Blackwell, even as tota…
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Positron bets on LPDDR memory and 1:1 matrix-vector ratio to slash inference costs
Positron's next-gen Azimov chip uses commodity LPDDR memory to deliver 2.3TB per chip at 400W — 6-8x the memory capacity of Nvidia's B200 at a quarter of the power — while its sys…