Can Inkling run on Mac Studio M5 Ultra 256GB?
NO — Won’t fit
Q8_0 · 4K context · formula estimate
What this means
The checked Q8_0 build needs about 967.1GB, above this Mac's conservative 248GB working budget.
−719.1GB short
above the working budget
967.1GB
needed at Q8_0
Q8_0
quant selected
0GB
working headroom
needs 967.1 GBworking budget 248 GB · short 719.1 GB
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q8_0 GGUF (856.8 GB) + mmap overhead | 899.6 |
| KV cache | 4K context window | 66.7 |
| Runtime | macOS inference app + compute buffers | 0.8 |
| Total needed | at Q8_0, 4K context | 967.1 |
| Working budget | 256 GB unified memory − conservative macOS reserve | 248 |
| Headroom | memory shortfall | −719.1 |
Pick your quant
| Quant | Download | Memory | Estimated speed | Verdict |
|---|---|---|---|---|
| IQ1_S | 270.2 GB | 351.2 GB | — | ✕ Won't fit |
| Q8_0 ★ | 856.8 GB | 967.1 GB | — | ✕ Won't fit |
Other models on this Mac
Inkling on other Mac Studio M5 Ultra configurations
FAQ
Can the Mac Studio M5 Ultra · 256GB run Inkling?
Not with the quants currently tracked. The selected Q8_0 build needs about 967.1GB, above the 248GB working budget.
Which Inkling quant should I use on this Mac?
None of the tracked quants fit this configuration safely. Choose a smaller model or a Mac with more unified memory.
Which app should I use for Inkling on this Mac?
Start with LM Studio. This page gives the complete point-and-click walkthrough.
Are these speeds measured on a Mac Studio M5 Ultra?
No. The range is a formula estimate based on memory bandwidth, model size, active parameters, cooling, and a 4K context. The app, backend, thermals, and prompt can change real performance.