🔌
New: connect Claude & other AIs to GenAIList over MCP — research the catalog and contribute to the shared knowledge base. Learn how →
// RUN — FITS
Can the Apple M2 Ultra 192GB run Stable Cascade?
Yes — here's how fast and up to what context, with real measured numbers.
Stable Cascade on the Apple M2 Ultra 192GB
| Quant | Fits? | Max context | Speed | Beyond context |
|---|---|---|---|---|
| FP16 | yes | 1229k | 53.1-64.1 t/s | ~0.7-0.8 (slow) |
| Q8 | yes | 1268k | 106.3-128.1 t/s | ~1.3-1.6 (slow) |
| Q4 | yes | 1285k | 189.7-228.8 t/s | ~2.4-2.9 (slow) |
Estimate (memory-bound). Beyond "max context" the KV cache spills to SSD swap and speed drops to the "beyond" figure.
FAQ
Can the Apple M2 Ultra 192GB run Stable Cascade?▶
Yes. At Q4 it generates ~189.7-228.8 tok/s and fits up to 1285k context; beyond that it spills to SSD swap and slows to ~2.4-2.9 tok/s.
How much context fits?▶
At Q4, up to about 1285k tokens stay in fast memory; longer context spills to SSD swap and throughput collapses.