AMD Unveils MI455X with 432GB HBM4 for Rack-Scale AI
AMD introduced the Instinct MI455X GPU designed for rack-scale AI, featuring 432GB of HBM4 memory that exceeds the combined total of five H100s. The ROCm ecosystem is already being updated to support developers with this new high-bandwidth architecture.
2026-07-24 ~ 2026-07-24 · 2 related posts
- Episode 1: AMD Unveils MI455X with 432GB HBM4 for Rack-Scale AI(2026-07-24, 2 posts)
- Episode 2: AMD MI455X Early Tests Reveal 23.3TB/s HBM4 Bandwidth(2026-07-24, 2 posts)
- AMD MI455X Architecture Breakdown: First Rack-Native GPU with HBM4 — ryanshrout · 2026-07-24
- AMD’s MI455X brings 432GB of HBM4 per GPU and day-one ROCm support — LysandreJik · 2026-07-24