VRAM Calculator
Pick your GPU or Mac and what you use models for. Every open-weight model the site knows is sized for your hardware, graded on fit, given a speed estimate from its memory bandwidth, and ranked by how well it matches the job. A Mac is graded against the memory macOS lets its GPU use, not all of it. Where community benchmarks exist on the same card, the measured number replaces the estimate.
M5 Pro·24 GB unified memory·307 GB/s
macOS lets the GPU use 16 of the 24 GB, and raising it would leave too little for macOS itself.
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Email me new reportsNobody has reported Llama 3.1 8B on the M5 Pro 24GB yet.
Memory assumes an F16 KV cache at 32k context; Perfect is under 60% of the pool, Good under 85%, Marginal under 98%. Offload paths cap at Good. Speed is the memory bandwidth divided by the bytes read per token, at 85% efficiency (measured on this chip); a community median at the same quant replaces it. Click a row for the breakdown.
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