Not All AI Racks Are Built the Same presented by QCT

Presenter: [QCT](../../articles/QCT.md) (Quanta Cloud Technology) Event: 2025 OCP Global Summit — Executive Sessions Date: 2025-10-23 Source: YouTube

Overview

QCT's presentation at OCP Global Summit 2025 argues that while all GB200 NVL72 racks share [NVIDIA](../../articles/NVIDIA.md)'s reference design, the engineering choices made by each ODM — in power architecture, hose materials, thermal simulation, and manufacturing scale — determine real-world reliability and TCO. The talk walks through QCT's four-generation development journey from the GH200 Grace Hopper 2U system to the GB200 NVL72 production rack, documenting the specific design changes required at each step. It concludes with liquid cooling infrastructure guidance on water temperature selection, CDU sizing, and wet-vs-dry shipping decisions, plus a company profile and product portfolio overview.