Meta’s custom AMD MI400 chip is said to use 144GB of HBM, not 432GB
rwang07 · x · 2026-07-22
A SemiAnalysis report says Meta’s custom AMD MI400-series chip will be about half the size of a normal MI455X chip.
- The chip is reportedly optimized for recommender workloads and cost per memory bandwidth.
- Meta is said to use about 144GB of HBM instead of 432GB.
- The post is a reaction to that hardware-specific design choice, which points to Meta’s continuing push toward custom inference hardware.
More from Infra
- Anthropic S-1: training infra edge cut per-task cost 40% and doubled revenue growth — BenBajarin · 2026-10-26
- Rewriting scaling law study: optimal synthetic data share rises from 10% to 32% with compute — heghbalz · 2026-10-26
- US states halt new data centers as 72% of Americans oppose local builds — YvesMulkers · 2026-10-26
- $5M Seed Round Can't Afford One DeepSeek Training Run: GPU-less AI Startup's Three Paths — FinanceYF5 · 2026-10-26
- HBM demand shifts: low-stack inference plans shelved, Rubin to go 12-high only — BenBajarin · 2026-10-26
- CircuitHub unveils The Grid, a factory-scale robot making PCBs in the US twice as fast as Shenzhen — garrytan · 2026-10-26