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Can I run Spark-X2.6-1.7B on a Mac with 96 GB?

Yes

Its published weights (3.42 GB) fit in the 72.0 GB a Mac with 96 GB can use, with room for ≈ 1M tokens of context.

Full analysis of Spark-X2.6-1.7B Everything that runs on Mac with 96 GB Get the weights on Hugging Face
hf download XHToken/Spark-X2.6-1.7B

Files and context on Mac with 96 GB

Each file of Spark-X2.6-1.7B (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 96 GB Context (16-bit)Context (8-bit)
As published3.42 GBFits1M1M
Spark-X2.6-1.7BXHToken/Spark-X2.6-1.7B-GGUF3.42 GBFits1M1M
Q8_0XHToken/Spark-X2.6-1.7B-GGUF1.82 GBFits1M1M
Q4_K_MXHToken/Spark-X2.6-1.7B-GGUF1.77 GBFits1M1M

Spark-X2.6-1.7B on other hardware

Popular models that run on Mac with 96 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.