BENCHMARK REPORT
Can I Run Qwen 2.5 Coder 32B Instruct on Apple M3 Pro (18GB Unified)?
Comprehensive technical verdict based on static weights, dynamic KV Cache (8k baseline context window), and CUDA runtime overhead.
Official Verdict
NO — CUDA OOM
Executive Hardware Compatibility Summary: Qwen 2.5 Coder 32B Instruct on Apple M3 Pro (18GB Unified)
Authoritative verdict, memory allocation, and token generation performance:
Direct Answer: CUDA OOM — Deficit of 10.0 GBQwen 2.5 Coder 32B Instruct exceeds dedicated physical VRAM and triggers PCIe layer offloading on Apple M3 Pro (18GB Unified) (18GB). At standard Q4_K_M 4-bit quantization and an 8,192-token context window, total memory demand is 23.75 GB (19.98 GB weights + 2.12 GB dynamic KV cache + 1.15 GB OS & CUDA buffers). Physical VRAM is exceeded by 5.75 GB, forcing 33 transformer layers to offload across the PCIe bus to host DDR RAM. Estimated generation throughput is ~1.3 tokens/sec (~769.2 ms per token) with prompt prefill processing reaching ~77 tok/s.
Run Verdict
CUDA OOM (Offload)
Total Required VRAM
23.75 GB / 18 GB
Decoding Speed
~1.3 tok/s (769.2ms)
Safe Context Window
Offload to RAM
Hardware Architecture & VRAM Topology
Apple SiliconApple M3 Pro (18GB Unified) • 150 GB/s Bandwidth (Apple Unified Memory)
Token Generation
~1.3 tok/s(769.2 ms)
OOM SPILL
VRAM Utilization Breakdown23.75 GB / 13.7 GB (173%)
VRAM Limit (13.7G)
19.98G
2.12G
-10.05G Spill
Weights
19.98 GB
KV Cache
2.12 GB
Activation
0.5 GB
OS/Driver
1.15 GB
Overflow
10.05 GB
Hardware Chokepoint: PCIe Bus Throttling Active
GPU VRAM (18 GB)
31 / 64 Layers Loaded
150 GB/s Bus
PCIe 4.0 x16 Bottleneck
31.5 GB/s
-97% Bandwidth Drop
Host DDR5 System RAM
33 Layers Offloaded
+11.8 GB RAM Siphoned
Why does your generation speed collapse to ~1.3 tok/s? Because for every single generated token, model weights across the 33 offloaded layers must be transferred across the 31.5 GB/s PCIe slot from host system RAM.
Context Window vs VRAM Scaling Curve
Blue line indicates total VRAM demand across context lengths; Red dashed line is physical VRAM ceiling.
CUDA OOM — Deficit of 10.0 GB
oom33/64 layers will spill to CPU RAM, causing severe PCIe bandwidth throttling (est. 1.3 tok/s).
Throughput
~1.3 tok/s
769.2 ms / token
Headroom
-10.05 GB
173% of capacity
Layers Fit
31 / 64
33 on DDR5
Max Safe Ctx
0
Tokens before OOM
Host DDR RAM Status:Fits in DDR RAM (+11.8 GB used of 32 GB)
Static Permalink:
Open Static Report/can-i-run/qwen-2-5-coder-32b-on-apple-m3-pro-18gReady-to-Run CLI Commands
# Note: Model requires CPU offloading (31/64 layers on GPU)
ollama run qwen2.5-coder:32bCommands include automatic memory ceiling flags and model layer offload configurations calculated above.
Cloud Hardware Failover
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Hardware Specification Summary
GPU ArchitectureApple Silicon
Memory Bandwidth150 GB/s
Model Parameters32.8B (LLM)
Attention ArchitectureGrouped-Query (GQA)
Prompt Prefill Speed~77 tok/s (TTFT ~106390ms)
Benchmark Context Tested8,192 tokens
Global Compatibility Matrix for Apple M3 Pro (18GB Unified)
Evaluated at Standard Q4_K_M Precision with 8,192 Tokens Context Window
Compatibility Index
58% (33/57)
31 Pass2 Tight24 OOM
| Model & Architecture | Category | Parameters | Required VRAM | Fit Status | Est. Speed | Simulate |
|---|---|---|---|---|---|---|
DeepSeek-R1 (671B Full MoE)MLAMoE DeepSeek | MoE | 671B(37B active) | 411.16 GB | OOM (-397.46G) | ~0.6 tok/s | Simulate |
DeepSeek-V3 (671B Base/Chat)MLAMoE DeepSeek | MoE | 671B(37B active) | 411.16 GB | OOM (-397.46G) | ~0.6 tok/s | Simulate |
DeepSeek-R1-Distill-Llama-70B DeepSeek | LLM | 70.6B | 47.6 GB | OOM (-33.9G) | ~0.6 tok/s | Simulate |
DeepSeek-R1-Distill-Qwen-32B DeepSeek | LLM | 32.8B | 23.75 GB | OOM (-10.05G) | ~1.3 tok/s | Simulate |
DeepSeek-R1-Distill-Qwen-14B DeepSeek | LLM | 14.7B | 11.94 GB | 100% VRAM Fit | ~11.7 tok/s | Simulate |
DeepSeek-R1-Distill-Llama-8B DeepSeek | LLM | 8B | 7.33 GB | 100% VRAM Fit | ~21.6 tok/s | Simulate |
DeepSeek-R1-Distill-Qwen-8B DeepSeek | LLM | 8.03B | 7.48 GB | 100% VRAM Fit | ~21.5 tok/s | Simulate |
DeepSeek-R1-Distill-Qwen-7B DeepSeek | LLM | 7.6B | 6.49 GB | 100% VRAM Fit | ~22.7 tok/s | Simulate |
DeepSeek-R1-Distill-Qwen-1.5B DeepSeek | LLM | 1.8B | 2.61 GB | 100% VRAM Fit | ~95.8 tok/s | Simulate |
DeepSeek-Coder-V2 Lite (16B / 2.4B MoE)MLAMoE DeepSeek | MoE | 15.7B(2.4B active) | 11.21 GB | 100% VRAM Fit | ~71.8 tok/s | Simulate |
DeepSeek-Coder-V2 (236B / 21B MoE)MLAMoE DeepSeek | MoE | 236B(21B active) | 146.23 GB | OOM (-132.53G) | ~0.6 tok/s | Simulate |
Qwen 2.5 Coder 72B Instruct Qwen | LLM | 72.7B | 48.87 GB | OOM (-35.17G) | ~0.6 tok/s | Simulate |
Qwen 2.5 72B Instruct Qwen | LLM | 72.7B | 48.87 GB | OOM (-35.17G) | ~0.6 tok/s | Simulate |
Qwen 2.5 VL 72B (Vision Flagship) Qwen | LLM | 72.7B | 48.87 GB | OOM (-35.17G) | ~0.6 tok/s | Simulate |
Qwen 2.5 VL 7B (Vision) Qwen | LLM | 7.61B | 6.5 GB | 100% VRAM Fit | ~22.7 tok/s | Simulate |
Qwen 2.5 Coder 32B Instruct Qwen | LLM | 32.8B | 23.75 GB | OOM (-10.05G) | ~1.3 tok/s | Simulate |
Qwen 2.5 Coder 14B Instruct Qwen | LLM | 14.7B | 11.94 GB | 100% VRAM Fit | ~11.7 tok/s | Simulate |
Qwen 2.5 Coder 7B Instruct Qwen | LLM | 7.6B | 6.49 GB | 100% VRAM Fit | ~22.7 tok/s | Simulate |
Qwen 2.5 Coder 1.5B Instruct Qwen | LLM | 1.54B | 2.45 GB | 100% VRAM Fit | ~112 tok/s | Simulate |
Qwen 2.5 32B Instruct Qwen | LLM | 32.8B | 23.75 GB | OOM (-10.05G) | ~1.3 tok/s | Simulate |
Qwen 2.5 14B Instruct Qwen | LLM | 14.7B | 11.94 GB | 100% VRAM Fit | ~11.7 tok/s | Simulate |
Qwen 2.5 7B Instruct Qwen | LLM | 7.6B | 6.49 GB | 100% VRAM Fit | ~22.7 tok/s | Simulate |
Qwen 2.5 3B Instruct Qwen | LLM | 3.1B | 3.59 GB | 100% VRAM Fit | ~55.6 tok/s | Simulate |
Qwen 2.5 0.5B Instruct Qwen | LLM | 0.49B | 1.8 GB | 100% VRAM Fit | ~180 tok/s | Simulate |
Llama 3.3 70B Instruct Llama | LLM | 70.6B | 47.6 GB | OOM (-33.9G) | ~0.6 tok/s | Simulate |
Llama 3.1 70B Instruct Llama | LLM | 70.6B | 47.6 GB | OOM (-33.9G) | ~0.6 tok/s | Simulate |
Llama 3.1 405B Instruct Llama | LLM | 405B | 252.77 GB | OOM (-239.07G) | ~0.6 tok/s | Simulate |
Llama 3.1 8B Instruct Llama | LLM | 8B | 7.33 GB | 100% VRAM Fit | ~21.6 tok/s | Simulate |
Llama 3.2 3B Instruct Llama | LLM | 3.2B | 4.28 GB | 100% VRAM Fit | ~53.9 tok/s | Simulate |
Llama 3.2 1B Instruct Llama | LLM | 1.23B | 2.41 GB | 100% VRAM Fit | ~140.2 tok/s | Simulate |
Llama 3.2 11B Vision Instruct Llama | LLM | 10.6B | 8.92 GB | 100% VRAM Fit | ~16.3 tok/s | Simulate |
Llama 3.2 90B Vision Instruct Llama | LLM | 89B | 59.46 GB | OOM (-45.76G) | ~0.6 tok/s | Simulate |
Microsoft Phi-4 (14B) Phi | LLM | 14.7B | 12.01 GB | Tight Fit | ~11.7 tok/s | Simulate |
Microsoft Phi-3.5 Mini (3.8B) Phi | LLM | 3.82B | 6.91 GB | 100% VRAM Fit | ~45.1 tok/s | Simulate |
Google Gemma 2 9B Instruct Gemma | LLM | 9.2B | 9.79 GB | 100% VRAM Fit | ~18.7 tok/s | Simulate |
Mistral Small 3 (24B Instruct) Mistral | LLM | 24B | 18.12 GB | OOM (-4.42G) | ~2.4 tok/s | Simulate |
Mistral NeMo (12B Instruct) Mistral | LLM | 12.2B | 10.15 GB | 100% VRAM Fit | ~14.1 tok/s | Simulate |
Mistral 7B Instruct v0.3 Mistral | LLM | 7.25B | 6.88 GB | 100% VRAM Fit | ~23.8 tok/s | Simulate |
Codestral 22B (Mistral AI) Mistral | LLM | 22.2B | 17.02 GB | OOM (-3.32G) | ~2.8 tok/s | Simulate |
Mistral Large 2 (123B) Mistral | LLM | 123B | 79.77 GB | OOM (-66.07G) | ~0.6 tok/s | Simulate |
Mixtral 8x7B (MoE 47B)MoE Mistral | MoE | 46.7B(12.9B active) | 31.15 GB | OOM (-17.45G) | ~2.7 tok/s | Simulate |
Mixtral 8x22B (MoE 141B)MoE Mistral | MoE | 141B(39B active) | 89.67 GB | OOM (-75.97G) | ~0.6 tok/s | Simulate |
Pixtral 12B (Multimodal) Mistral | LLM | 12.4B | 10.28 GB | 100% VRAM Fit | ~13.9 tok/s | Simulate |
Gemma 2 27B Instruct Gemma | LLM | 27.2B | 21.26 GB | OOM (-7.56G) | ~1.7 tok/s | Simulate |
Google Gemma 2 2B Instruct Gemma | LLM | 2.6B | 3.84 GB | 100% VRAM Fit | ~66.3 tok/s | Simulate |
GLM-4 9B Chat (Zhipu AI) GLM | LLM | 9.4B | 7.79 GB | 100% VRAM Fit | ~18.3 tok/s | Simulate |
FLUX.1 [dev] (12B DiT) FLUX | ImageGen | 12B | 15.68 GB | OOM (-1.98G) | ~5.4 tok/s | Simulate |
FLUX.1 [schnell] (4-step) FLUX | ImageGen | 12B | 15.68 GB | OOM (-1.98G) | ~5.4 tok/s | Simulate |
Stable Diffusion XL (SDXL 1.0) SDXL | ImageGen | 3.5B | 7.51 GB | 100% VRAM Fit | ~49.3 tok/s | Simulate |
Stable Diffusion 1.5 (Classic) SD | ImageGen | 1B | 5.78 GB | 100% VRAM Fit | ~172.4 tok/s | Simulate |
Whisper Large v3 (1.5B) Whisper | Audio | 1.5B | 3.64 GB | 100% VRAM Fit | ~114.9 tok/s | Simulate |
Kokoro 82M (Text-to-Speech) Kokoro | Audio | 0.082B | 1.56 GB | 100% VRAM Fit | ~180 tok/s | Simulate |
Wan2.1 (14B Text-to-Video) Wan | ImageGen | 14.2B | 18.72 GB | OOM (-5.02G) | ~3.7 tok/s | Simulate |
Wan2.1 (1.3B Video) Wan | ImageGen | 1.3B | 7.28 GB | 100% VRAM Fit | ~132.6 tok/s | Simulate |
HunyuanVideo (13B Video DiT) Hunyuan | ImageGen | 13B | 19.69 GB | OOM (-5.99G) | ~3.8 tok/s | Simulate |
Stable Diffusion 3.5 Large (8B) SD | ImageGen | 8.1B | 13.3 GB | Tight Fit | ~21.3 tok/s | Simulate |
BAAI BGE-M3 (Multilingual Embedding) BAAI | LLM | 0.56B | 2.54 GB | 100% VRAM Fit | ~180 tok/s | Simulate |
Qwen 2.5 Coder 32B Instruct Context Scaling Matrix on Apple M3 Pro (18GB Unified)
Dynamic KV Cache footprint and generation throughput measured across sequence lengths (Q4_K_M weights):
| Context Window | KV Cache Memory | Total VRAM Demand | Compatibility Status | Offloaded Layers | Est. Generation Speed |
|---|---|---|---|---|---|
| 2,048 tokens (2k) | 0.53 GB | 22.16 GB / 18 GB | CUDA OOM | 28 layers on RAM | ~1.5 tok/s |
| 4,096 tokens (4k) | 1.06 GB | 22.69 GB / 18 GB | CUDA OOM | 29 layers on RAM | ~1.4 tok/s |
| 8,192 tokens (8k)Standard Baseline | 2.12 GB | 23.75 GB / 18 GB | CUDA OOM | 33 layers on RAM | ~1.3 tok/s |
| 16,384 tokens (16k) | 4.24 GB | 25.87 GB / 18 GB | CUDA OOM | 39 layers on RAM | ~1.1 tok/s |
| 32,768 tokens (32k) | 8.48 GB | 30.11 GB / 18 GB | CUDA OOM | 53 layers on RAM | ~0.6 tok/s |
Hardware Compatibility Q&A: Qwen 2.5 Coder 32B Instruct on Apple M3 Pro (18GB Unified)
Technical answers for memory allocation, CUDA overhead, and execution parameters.
Can Apple M3 Pro (18GB Unified) run Qwen 2.5 Coder 32B Instruct?
CUDA OOM — Deficit of 10.0 GB. 33/64 layers will spill to CPU RAM, causing severe PCIe bandwidth throttling (est. 1.3 tok/s). At an 8k context window, total VRAM demand is 23.75 GB compared to Apple M3 Pro (18GB Unified)'s 18 GB frame buffer.
How much VRAM does Qwen 2.5 Coder 32B Instruct require?
At standard Q4_K_M quantization and 8k context, Qwen 2.5 Coder 32B Instruct requires approximately 23.75 GB of VRAM. This includes 19.98 GB for model weights, 2.12 GB for dynamic KV cache (Grouped-Query Attention (GQA)), 0.5 GB for activation buffers, and 1.15 GB for OS display and CUDA runtime overhead.
What generation speed (tokens/sec) can I expect on Apple M3 Pro (18GB Unified)?
Estimated autoregressive token generation speed is ~1.3 tokens per second with a per-token latency of ~769.2 ms, powered by 150 GB/s memory bandwidth. Prompt prefill processing reaches ~77 tok/s (TTFT ~106390 ms).
What causes CUDA Out-of-Memory (OOM) when running Qwen 2.5 Coder 32B Instruct?
CUDA OOM occurs when total memory consumption exceeds Apple M3 Pro (18GB Unified)'s 18 GB physical VRAM. While model weights stay static, the KV cache grows with every conversation token. When VRAM fills up, inference engines (like Ollama or llama.cpp) must offload remaining layers across the PCIe bus (31.5 GB/s) to host system RAM, causing generation speed to drop sharply.
How do I run Qwen 2.5 Coder 32B Instruct locally on Apple M3 Pro (18GB Unified)?
You can run Qwen 2.5 Coder 32B Instruct directly with Ollama using "ollama run qwen-2-5-coder-32b". For advanced serving with vLLM or llama.cpp, copy the ready-to-run CLI commands in the CLI Commands section above with optimal context, quantization, and GPU layer offload parameters.
Related Hardware Benchmarks & Model Alternatives
Compare Qwen 2.5 Coder 32B Instruct and Apple M3 Pro (18GB Unified) against alternative configurations:
Recommended Alternative GPUs for Qwen 2.5 Coder 32B Instruct
Explore how Qwen 2.5 Coder 32B Instruct performs across other budget, midrange, and flagship architectures:
Other Popular Models You Can Run on Apple M3 Pro (18GB Unified)
Verified open-weights LLMs and image models that fit within Apple M3 Pro (18GB Unified)'s 18GB VRAM:
Dual GPU Showdown: Apple M3 Pro (18GB Unified) vs NVIDIA GeForce RTX 4090
Compare memory bandwidth (150 GB/s vs 1008 GB/s), VRAM headroom (18GB vs 24GB), and inference speed head-to-head.
Frequently Asked Questions (FAQ)
Model weights are only one part of total VRAM consumption. When you prompt a model, the KV Cache (Key-Value Cache) stores all historical tokens. At 32k or 64k context, standard GQA attention can demand an additional 4GB to 12GB of VRAM! Combined with activation buffers and OS background consumption (0.8GB on Windows), total memory spikes beyond hardware capacity.