{"id":"apple-studio-512","status":"catalog","label":"M3 Ultra 512GB unified","vendor":"Apple","family":"apple-silicon","stack":"mlx","vram_mib":524288,"bandwidth_gbs":819,"tdp_w":80,"aliases":["M3 Ultra 512","M3 512","Studio 512","Mac Studio 512"],"refuse":["cuda-only-engines"],"wiki":"M3 Ultra Mac Studio config. 512GB unified at 819 GB/s. Capacity king, not CUDA. Apple later pulled the 512GB SKU from the store — class still exists in the wild.","sources":[{"title":"Apple M3 Ultra newsroom (up to 512GB)","url":"https://www.apple.com/newsroom/2025/03/apple-reveals-m3-ultra-taking-apple-silicon-to-a-new-extreme/"},{"title":"Tom's Hardware: 800–819 GB/s","url":"https://www.tomshardware.com/desktops/apple-debuts-m3-ultra-in-refreshed-mac-studio-with-up-to-512gb-memory"}]}