Can I Run Devstral on Apple M4?
Written by Jakub Rusinowski · Last updated September 11, 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 ~7.4 GB of the Apple M4's 24 GB usable memory, at ~4 tok/s (est.), with room for up to 32K context.
See what else this hardware can run →
or compare on Vast.ai from $0.35/hr (typical low · varies)
As an Amazon Associate we earn from qualifying purchases. Cloud GPU links are referral links — we may earn a commission at no extra cost to you.
Apple M4 Specs
| VRAM | 32 GB unified memory |
| Memory Bandwidth | 120 GB/s |
Devstral Small 2505 24B on the Apple M4: VRAM by quantization
| Quant | VRAM needed | Fits 32 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 50.1 GB | ✗ No | — | — |
| Q8_0 | 27.6 GB | ✗ No | — | — |
| Q6_K | 21.8 GB | ✓ Yes | 16K | — |
| Q5_K_M | 19.2 GB | ✓ Yes | 32K | — |
| Q4_K_M | 16.6 GB | ✓ Yes | 32K | — |
| 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 32 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: 8K 16.6 GB · 32K 20.7 GB · 128K 36.8 GB ✗. Past 128K it no longer fits 32 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 M4 (at 8K context)
| Devstral Small 2505 24B | Q4_K_M · 16.6 GB at 8K context · ~4 tok/s (est.) |
| Devstral Small 2 24B | Q4_K_M · 16.6 GB at 8K context · ~4 tok/s (est.) |
| Devstral 2 22B | Q4_K_M · 15.7 GB at 8K context · ~5 tok/s (est.) |
Devstral needs ~17 GB but this GPU has 32 GB. Rent a RTX 4090 (24 GB)-class GPU by the hour instead of buying one:
Affiliate links — we may earn a commission if you sign up, at no extra cost to you.
Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Is the Apple M4 enough to run Devstral locally?
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 ~7.4 GB of the Apple M4's 24 GB usable memory, at ~4 tok/s (est.), with room for up to 32K context.
What's the best Devstral size for the Apple M4?
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 ~4 tokens/sec, up to 32K context.
Every Devstral size on the Apple M4
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| Devstral-2 123B | 77.9 GB | Does not fit | — |
| Devstral Small 2505 24B | 16.6 GB | Runs | ~4 tok/s |
| Devstral Small 2 24B | 16.6 GB | Runs | ~4 tok/s |
Devstral on Other GPUs
- Devstral on NVIDIA GeForce RTX 5090
- Devstral on Apple M2 Pro
- Devstral on Apple M1 Pro
- Devstral on Apple M5
- Devstral on Apple M3 Pro
Popular Models on the Apple M4
VRAM Tier
Troubleshooting
Buying Guide
← Can I Run It? | Devstral Model Page | Apple M4 GPU Page | VRAM calculator | Check Your Hardware