Can I Run Devstral on Apple M3 Pro?
Written by Jakub Rusinowski · Last updated September 29, 2026
Yes, comfortably — 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 ~10.4 GB of the Apple M3 Pro's 27 GB usable memory, at ~5 tok/s (est.), with room for up to 64K context.
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Apple M3 Pro Specs
| VRAM | 36 GB unified memory |
| Memory Bandwidth | 153 GB/s |
Devstral Small 2505 24B on the Apple M3 Pro: VRAM by quantization
| Quant | VRAM needed | Fits 36 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.1 GB | ✗ No | — | — |
| Q8_0 | 27.6 GB | ✗ No | — | — |
| Q6_K | 21.8 GB | ✓ Yes | 32K | — |
| Q5_K_M | 19.2 GB | ✓ Yes | 32K | — |
| Q4_K_M | 16.6 GB | ✓ Yes | 64K | — |
| Q3_K_M | 12.4 GB | ✓ Yes | 64K | — |
| Q2_K | 10 GB | ✓ Yes | 64K | — |
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 36 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 M3 Pro: 8K 16.6 GB · 32K 20.7 GB · 128K 36.8 GB ✗. Past 128K it no longer fits 36 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 24 GB of system RAM, CPU only: runs comfortably.
Devstral Sizes That Fit the Apple M3 Pro (at 8K context)
| Devstral Small 2505 24B | Q4_K_M · 16.6 GB at 8K context · ~5 tok/s (est.) |
| Devstral Small 2 24B | Q4_K_M · 16.6 GB at 8K context · ~5 tok/s (est.) |
| Devstral 2 22B | Q4_K_M · 15.7 GB at 8K context · ~6 tok/s (est.) |
Devstral needs ~17 GB but this GPU has 36 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
Devstral on the Apple M3 Pro — does it fit?
Yes, comfortably — 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 ~10.4 GB of the Apple M3 Pro's 27 GB usable memory, at ~5 tok/s (est.), with room for up to 64K context.
Which Devstral variant fits best on the Apple M3 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 ~5 tokens/sec, up to 64K context.
Every Devstral size on the Apple M3 Pro
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Devstral-2 123B | 77.9 GB | Does not fit | — |
| Devstral Small 2505 24B | 16.6 GB | Runs | ~5 tok/s |
| Devstral Small 2 24B | 16.6 GB | Runs | ~5 tok/s |
| Devstral 2 22B | 15.7 GB | Runs | ~6 tok/s |
Devstral on Other GPUs
- Devstral on NVIDIA GeForce RTX 5090
- Devstral on Apple M4
- Devstral on Apple M2 Pro
- Devstral on Apple M1 Pro
- Devstral on Apple M5
Popular Models on the Apple M3 Pro
VRAM Tier
Troubleshooting
Buying Guide
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