Xiaomi Showed an AI Cube Mini PC With Three of Its Own Chips, 1.22TB/s Near-Memory Bandwidth, and 120B Local Inference at 150W

r/LocalLLaMA (775 upvotes, 140 comments), corroborated by VideoCardz and Gizmochina coverage dated 2026-08-24·high signalXBlueskyLinkedInCopy link

On 2026-08-24 Xiaomi unveiled the XRING O3, O100 and D100 alongside an 'AI Cube' prototype mini PC that stacks all three: the O3 mobile SoC, the O100 AI accelerator, and the D100 automotive driving chip. The O100 is built on 6nm with two DRAM layers stacked wafer-on-wafer at a 1.4 micron hybrid-bonding pitch, 28,672 effective data lines, and near-memory bandwidth up to 1.22TB/s. Xiaomi rates the box at 150W sustained and lists local deployment of 120B and 3B models, which would put it in DGX Spark and Strix Halo territory for builders who want a self-contained local inference appliance.