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Can I run K2-Horizon-7B-GGUF on a Mac with 128 GB?

Yes

Its BF16 file (18.0 GB) fits in the 96.0 GB a Mac with 128 GB can use, with room for ≈ 512K tokens of context.

Full analysis of K2-Horizon-7B-GGUF Everything that runs on Mac with 128 GB Get the BF16 file on Hugging Face
ollama run hf.co/IFM/K2-Horizon-7B-GGUF:BF16

Files and context on Mac with 128 GB

Each file of K2-Horizon-7B-GGUF (and of GGUF versions the site has analyzed), and how much context fits next to it, with the context cache in 16-bit or 8-bit.

FileSizeOn Mac with 128 GB Context (16-bit)Context (8-bit)
BF1618.0 GBFits512K512K

K2-Horizon-7B-GGUF on other hardware

Popular models that run on Mac with 128 GB

Assumes 75% of the Mac's memory is usable (macOS's default limit for the GPU; it can be raised) and at least 4K tokens of context for one conversation, with the context cache in 16-bit unless noted. Fits leaves at least 20% of that memory for context; Tight leaves less.