SINOLINK SECURITIES·2025-09-28 09:15Investment Rating - The report suggests focusing on sectors driven by domestic AI development, such as servers and IDC, as well as sectors benefiting from overseas AI growth, including servers and optical modules [5] Core Insights - Nvidia plans to invest $100 billion in OpenAI to build AI data centers with a capacity of at least 10GW, which will significantly enhance OpenAI's computational capabilities [1][54] - Google’s Gemini 2.5 Flash Image model has gained significant traction, completing over 200 million image edits in its first week and attracting 10 million new users, indicating a surge in computational demand [1][55] - Microsoft has introduced a microfluidic cooling technology that reduces GPU chip temperatures by 65%, enhancing efficiency and supporting higher power density designs [1][56] - Alibaba Cloud announced a 380 billion yuan AI infrastructure plan, significantly increasing its daily call volume and launching new AI models and servers [1][9] - Domestic AI models are rapidly iterating, with increasing computational demands and a shift towards domestic supply chains [1] Summary by Sections Server Sector - The server index increased by 0.63% this week and 2.96% this month, driven by partnerships like SAP and OpenAI's "OpenAI for Germany" initiative [2][7] - Google’s Gemini model has significantly boosted token usage and computational demand, contributing to Alphabet's market value surpassing $3 trillion [7] Optical Modules - The optical module index decreased by 4.66% this week but increased by 2.73% this month, with Nvidia's investment in AI data centers positively impacting optical module manufacturers [2][8] IDC - The IDC index rose by 2.15% this week and 1.49% this month, with Alibaba Cloud's daily call volume increasing 15 times and a substantial investment in AI infrastructure [3][9] Liquid Cooling - Microsoft’s microfluidic cooling technology is expected to enhance AI chip performance and reduce energy costs, with a planned $30 billion investment in AI infrastructure [1][15]