China Mobile has completed an expansion of its intelligent computing center in Hohhot, Inner Mongolia, according to Inner Mongolia Daily. The project, buildings B25 and B27 at China Mobile's Hohhot data center in the Horinger New Area, was built by China Construction Third Engineering Bureau and covers about 44,500 square meters with 120 MW of total IT power.
Once the expansion is in operation, the site's total computing capacity will reach 20,100 PFLOPS, of which 16,700 PFLOPS is intelligent computing for AI workloads. The report did not specify the numerical precision behind those figures. About 90% of the capacity is meant to serve the Beijing-Tianjin-Hebei region, and green electricity accounts for 88% of supply.
The Hohhot campus is part of the national Eastern Data, Western Computing program, which moves computing loads from power-hungry eastern cities to western regions with cheaper renewable energy. It is a core node in China Mobile's 4+N+31+X computing network and a hub in the national integrated computing network. Over a 400G OTN backbone, one-way transmission latency between Hohhot and Beijing is 3.5 milliseconds, according to Securities Times, which the report says meets the needs of latency-sensitive enterprise customers in the Beijing area.
The Hohhot intelligent computing center has been billed as the largest single-site intelligent computing center operated by any telecom carrier in the world. Before this expansion it went into production in December 2025 with roughly 20,000 AI accelerator cards, and more than 85% of its AI chips are domestically made. IT Home separately cites an AI scale of 19,000 cards for the Hohhot node, built with heterogeneous computing, GPU pooling and cold-plate liquid cooling.
Cooling and power are the site's other selling points. Large-scale cold-plate liquid cooling and an AI energy management system bring average power usage effectiveness down to 1.15. In 2025 the center bought 750 million kWh of green power through direct supply and medium- to long-term contracts, cutting carbon dioxide emissions by 370,000 tonnes. The Horinger New Area sits at the heart of Inner Mongolia's wind and solar base, among the largest in China.
China Mobile also runs what it calls the largest single-cluster carrier intelligent computing center in Harbin.
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