半导体芯闻·2025-05-15 10:07Core Viewpoint - AMD's Instinct MI325X accelerator faces significant commercial challenges due to limited scalability and shipment delays, especially in comparison to Nvidia's offerings [1][2]. Group 1: Scalability and Performance - The maximum scalable configuration for AMD's Instinct MI325X and MI355X is limited to 8 GPUs, while Nvidia's B200 can scale up to 72 GPUs using NVLink interconnect [2]. - To build a cluster with more than 8 GPUs based on AMD, a shift to a different architecture is required, which reduces scalability [2]. - The MI325X has high power consumption (1000W) and does not show significant performance improvements over the MI300, complicating upgrades from existing platforms [2]. Group 2: Market Reception and Future Prospects - Microsoft expressed disappointment with AMD's GPUs as early as 2024, leading to a lack of follow-up orders, although Oracle and other companies have shown renewed interest due to AMD's price reductions [3]. - If the MI355X is competitively priced and supported by robust software, it may gain some traction, but it will still struggle to compete with Nvidia's rack-scale GB200 NVL72 [3]. - SemiAnalysis suggests that the MI355X could succeed in non-rack scale deployments if it has a competitive total cost of ownership (TCO) and improved software [3].