Steven Kramp 16 GB · RTX 4080
files too big (rounded size)
about 385.50 GB short
My measured card; usable free memory is not verified.
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Steven Kramp / @SelfHostedSI · Local AI lab
Muse Spark Open 816B A42BUD-Q3_K_XL
File size only: 401.5 GB (rounded source); not run yet.
Download this model's data (JSON)Files, not parameter estimates
401.5 GB (rounded source)
unsloth/Muse-Spark-Open-816B-A42B-GGUF
Source: Hugging Face file listing. Retrieved . File total recorded from the Hugging Face listing, rounded to 0.1 GB; exact bytes were not retained.
Hugging Face listings can change. These are dated file-size records; a revision hash was not retained. Download size does not prove that a runtime can load the model.
Fits on paper
Subtract this variant's recorded file size from each memory budget; the remainder is the upper bound for context and other overhead.
Decimal: 1 GB = 1,000,000,000 bytes; 1 TB = 1,000 GB. These are arithmetic comparison budgets, not verified usable hardware capacities. The answer can change with GB/GiB: 512 GiB = 549,755,813,888 bytes. The measured RTX 4080 has 16 GB VRAM; every other device name only labels a comparison budget.
24 GB · RTX 3090/4090
files too big (rounded size)
about 377.50 GB short
Comparison budget; not measured.
32 GB · RTX 5090
files too big (rounded size)
about 369.50 GB short
Comparison budget; not measured.
128 GB · DGX Spark
files too big (rounded size)
about 273.50 GB short
Comparison budget; I do not own one. Usable free memory is lower and not verified.
256 GB · Mac Studio M5 Ultra or 2× DGX Spark
files too big (rounded size)
about 145.50 GB short
One Mac Studio M5 Ultra, or the sum of two DGX Sparks (two memories, not one pool). Not measured.
512 GB · Mac Studio M5 Ultra
files fit on paper (rounded size)
about 110.50 GB left
Planned; not delivered.
1 TB · 2× Mac Studio
files fit on paper (rounded size)
about 598.50 GB left
Across two planned machines; not one shared memory pool.
GB values are rounded to 0.01 GB for display; “left” is what remains for context, runtime and the operating system. Exact bytes are in this model's data (JSON).
Budget minus model files leaves an upper bound for context, runtime buffers and the operating system; no context length or runtime compatibility is promised. Exactly filling a budget leaves no room for context, so the answer is “no room for context on paper”; files larger than the budget are “files too big”.
Two Mac Studio machines, 512 GB each; not delivered. Two DGX Sparks are likewise two memories, not one pool. A model split across two machines needs a compatible runtime and must fit each machine's allocation. This table is arithmetic, not a cluster test.
Append-only run history · oldest first
Approved measurements
Output tokens/s, time to first token, measured context window, power and € per million tokens: not measured yet. No Mac measurements yet.
The JSON is an extract of approved measurement fields. Internal paths and operational notes are excluded. New runs append here; the model URL stays the same.