AMD

Instinct MI350 and MI400 Series

Active

AMD's data-center GPU line. MI350-series (CDNA 4), led by MI355X (288 GB HBM3E, 8 TB/s, up to 10.1 PFLOPS MXFP4, 1,400 W TBP), is the generation shipping into 2026 and the volume driver of Instinct revenue. MI400-series (CDNA 5), launched July 23, 2026, splits into MI455X for frontier AI and AI factories (432 GB HBM4, 23.3 TB/s, up to 40 PFLOPS FP4, 320 billion transistors) and MI430X for HPC and sovereign AI (up to 288 TFLOPS FP64). ROCm and ROCm.ai are the software stack.

Latest update Sep 18, 2026

Instinct MI350 and MI400 Series

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Current status

MI355X is in production and live at customers including HUMAIN (Aug 31, 2026) and in AMD's MLPerf Inference 6.1 submission (Sep 16, 2026). MI400/MI455X ramps with Helios from late Q3 2026. MI500 series is on the 2027 roadmap.

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Specifications3

MI355X memory / bandwidth

288 GB HBM3E, 8 TB/s, 256 CUs, up to 10.1 PFLOPS MXFP4

MI455X memory / compute
432 GB HBM4, 23.3 TB/s, up to 40 PFLOPS FP4
MI430X HPC
Up to 288 TFLOPS hardware FP64

selected for LUMI-AI and Discovery

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