Lao Guo's Learning Space

Sep 22, 2026 · Industry Insights

M5 Ultra 64 vs 80 Core GPU: What ¥9750 Buys – Not Faster LLM Decoding

The article compares Apple M5 Ultra 64-core and 80-core GPU variants, revealing that the ¥9750 price difference adds 16 GPU cores, 6 CPU cores, and 512GB memory support, but identical 1.2TB/s memory bandwidth means LLM decoding speed remains unchanged; the upgrade only benefits GPU-intensive tasks like 3D rendering and video effects.