---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/topics/100000000808969.md"
description: "ALERT🚨🚨: META's CUSTOM AMD MI400-series chip will be half the size of a normal MI455X chip. It is "optimized" for recsys workloads and $/Memory Bandwidth. It will use ~144GB of HBM instead of 432GB. We break it down below👇️ 1/7🧵"
datetime: "2026-07-21T19:52:02.000Z"
locales:
  - [en](https://longbridge.com/en/topics/100000000808969.md)
  - [zh-CN](https://longbridge.com/zh-CN/topics/100000000808969.md)
  - [zh-HK](https://longbridge.com/zh-HK/topics/100000000808969.md)
author: "[@SemiAnalysis](https://longbridge.com/en/profiles/2078041753485574144.md)"
generator: "portal-rs"
---

# ALERT🚨🚨: META's CUSTOM AMD MI400-series chip will …


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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**