Can I Run Devstral on Apple M4 Pro?
Autor: Jakub Rusinowski · Ostatnia aktualizacja: 11 września 2026
Yes, but it's tight — Devstral Small 2505 24B at Q4_K_M needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), leaving ~1.4 GB of the Apple M4 Pro's 18 GB usable memory, at ~10 tok/s (est.), with room for up to 16K context.
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Apple M4 Pro Specs
| VRAM | 24 GB unified memory |
| Memory Bandwidth | 273 GB/s |
Devstral Small 2505 24B on the Apple M4 Pro: VRAM by quantization
| Quant | VRAM needed | Fits 24 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.1 GB | ✗ No | — | — |
| Q8_0 | 27.6 GB | ✗ No | — | — |
| Q6_K | 21.8 GB | ✗ No | — | — |
| Q5_K_M | 19.2 GB | ✗ No | — | — |
| Q4_K_M | 16.6 GB | ✓ Yes | 16K | — |
| Q3_K_M | 12.4 GB | ✓ Yes | 32K | — |
| Q2_K | 10 GB | ✓ Yes | 32K | — |
Assumes an 8K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 24 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the Apple M4 Pro: 8K 16.6 GB · 32K 20.7 GB ✗ · 128K 36.8 GB ✗. Past 32K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Devstral Small 2505 24B on 16 GB of system RAM, CPU only: runs, but it is tight.
Devstral Sizes That Fit the Apple M4 Pro (at 8K context)
| Devstral Small 2505 24B | Q4_K_M · 16.6 GB at 8K context · ~10 tok/s (est.) |
| Devstral Small 2 24B | Q4_K_M · 16.6 GB at 8K context · ~10 tok/s (est.) |
Devstral needs ~17 GB but this GPU has 24 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Will Devstral run on the Apple M4 Pro?
Yes, but it's tight — Devstral Small 2505 24B at Q4_K_M needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), leaving ~1.4 GB of the Apple M4 Pro's 18 GB usable memory, at ~10 tok/s (est.), with room for up to 16K context.
Which Devstral variant fits best on the Apple M4 Pro?
Devstral Small 2505 24B at Q4_K_M quantization needs 16.6 GB at 8K context (14.5 GB weights + 2.1 GB KV cache/overhead), estimated ~10 tokens/sec, up to 16K context.
Every Devstral size on the Apple M4 Pro
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Devstral-2 123B | 77.9 GB | Does not fit | — |
| Devstral Small 2505 24B | 16.6 GB | Runs | ~10 tok/s |
| Devstral Small 2 24B | 16.6 GB | Runs | ~10 tok/s |
Devstral on Other GPUs
- Devstral on NVIDIA GeForce RTX 4090
- Devstral on NVIDIA GeForce RTX 3090
- Devstral on AMD Radeon RX 7900 XTX
- Devstral on Apple M3
- Devstral on Apple M2
VRAM Tier
Troubleshooting
- Ollama: "model requires more system memory than is available"
- Which GGUF quant should I download? (Q4 vs Q5 vs Q8)
Buying Guide
← Can I Run It? | Devstral Model Page | Apple M4 Pro GPU Page | VRAM calculator | Check Your Hardware