{"data":{"slug":"amd-mi300x","etype":"chip","name":"AMD Instinct MI300X","cat":"GPU","subtitle":"AMD's serious challenge to Hopper — more memory than H100, adopted by Microsoft and Meta.","summary":"The MI300X stacked 8 CDNA3 compute chiplets on 4 base dies — 153 billion transistors, more than any GPU before it — with 192 GB of HBM3 when the H100 had 80. That memory advantage won real deployments: Azure ran GPT-4-class serving on it, Meta served Llama on it, and it proved the ROCm software stack at scale. The knock: software maturity, not silicon, remained AMD's gap.","attrs":[{"g":"Overview","l":"Designer","v":"AMD"},{"g":"Overview","l":"Architecture","v":"CDNA 3, chiplet (8 XCD + 4 IOD)"},{"g":"Overview","l":"Announced","v":"Launched December 2023"},{"g":"Overview","l":"Status","v":"Shipping"},{"b":"Vendor spec","g":"Manufacturing","l":"Foundry / process","v":"TSMC N5 compute dies on N6 base dies"},{"b":"Vendor spec","g":"Manufacturing","l":"Transistors","v":"153 billion"},{"b":"Vendor spec","g":"Manufacturing","l":"Packaging","v":"CoWoS + SoIC 3D hybrid bonding"},{"b":"Vendor spec","g":"Memory","l":"Memory","v":"192 GB HBM3 (8 stacks)"},{"b":"Vendor spec","g":"Memory","l":"Memory bandwidth","u":"TB/s","v":"5.3"},{"b":"Vendor spec","g":"Compute","l":"BF16/FP16 (dense)","u":"TFLOPS","v":"1,307"},{"b":"Vendor spec","g":"Compute","l":"FP8 (dense)","u":"TFLOPS","v":"2,615"},{"b":"Vendor spec","g":"Compute","l":"FP64 matrix","u":"TFLOPS","v":"163.4"},{"b":"Vendor spec","g":"Power","l":"TDP","u":"W","v":"750"},{"b":"Vendor spec","g":"Physical","l":"Form factor","v":"OAM; 8-GPU UBB platform"},{"b":"Vendor spec","g":"Physical","l":"Interconnect","v":"Infinity Fabric — 896 GB/s aggregate per GPU"},{"b":"Reported","g":"Price","l":"Price","v":"Reported meaningfully below H100 street pricing; AMD does not publish list prices"}],"kf":{"node":"TSMC N5/N6","year":2023,"class":"GPU","tdp_w":750,"mem_bw":5.3,"memory":"192 GB HBM3","designer":"AMD"},"aliases":["MI300X","MI300","CDNA3"],"ticker":null,"exchange":null,"hq":null,"founded":null,"website":null,"status":"Shipping","region":null,"asof":"2026-01-15","sources":[{"url":"https://www.amd.com/en/newsroom/press-releases/2023-12-6-amd-delivers-leadership-portfolio-of-data-center-a.html","label":"AMD MI300X announcement"}]},"meta":{"found":true,"count":1,"served_from":"site cache (no live upstream calls)","as_of":"2026-10-14T04:54:07+00:00","disclaimer":"Research and information only — not investment advice. Structured records carry basis labels (vendor spec / reported / estimate); market quotes are delayed/indicative.","attribution":"Records compiled from vendor documentation, official filings and reputable public reporting; market quotes via financial data providers. See /data-sources."}}