AMD MI455X Early Tests Reveal 23.3TB/s HBM4 Bandwidth
Early tests of AMD's MI455X show it features 432GB of HBM4 with a peak bandwidth of 23.3TB/s. However, its pin speed of 7.5 Gbps lags behind Nvidia's reported 10.7 Gbps.
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’s HBM4 data rate trails Nvidia’s 10.7 Gbps per pin claim — zephyr_z9 · 2026-07-24
- AMD's MI455X reportedly delivers 432GB of HBM4 and 23.3TB/s bandwidth — art_zucker · 2026-07-24