---
type: "Topics"
locale: "en"
url: "https://longbridge.com/en/dolphin/post/44349852.md"
description: "$Amazon(AMZN.US) AWS is not trying to beat Nvidia, AMD, or Google. Much of the networking hardware is off-the-shelf, so there may be no need to pay a premium for custom parts. Is networking really cheaper?At first glance on a per-card networking cost basis, AWS's approach works: the rack form factor mirrors GB300, yet per-card networking cost is lower. The savings are mostly in optics: Trn3 uses AECs to reach the top-of-rack (ToR) switch, and optics are only used beyond the ToR. On an equal-compute basis, however, Trn3's networking is not particularly cost-efficient and lacks competitiveness. Based on the chart, Trn3's networking costs about $1,800 per PFLOPS of FP8 compute. That is the highest among the six comparison setups."
datetime: "2026-10-15T03:05:33.000Z"
locales:
  - [en](https://longbridge.com/en/dolphin/post/44349852.md)
  - [zh-CN](https://longbridge.com/zh-CN/dolphin/post/44349852.md)
  - [zh-HK](https://longbridge.com/zh-HK/dolphin/post/44349852.md)
author: "[Dolphin Research](https://longbridge.com/en/dolphin.md)"
generator: "portal-rs"
---

# $Amazon(AMZN.US) AWS is not trying to beat Nvidia,…


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## Comments (1)

- **4M65 · 2026-10-15T16:00:49.000Z**: 👍


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