ArticleAI CodingLocal AI
96 GB is 77.76 GiB: the real memory ceiling on an M3 Ultra
Metal will not give you the RAM on the box, and the number it does give is not the 75% everyone repeats. I measured the three ceilings on a 96 GB Mac Studio, then measured what modern hybrid-attention models actually spend against them — including a Gemma 4 cache that quietly holds three times its own sliding window.
Mihai Perdum13 min read