MODEL ARCHITECTURE SPEC • ALIBABA CLOUD32.5B Dense

Qwen 2.5 Coder 32B Instruct VRAM & inference speed

32.5B Total ParamsDense Architecture64 Layers • 8 KV Heads32K Default Ctx (Max 128K)Ollama: qwen2.5-coder:32b

Accurate memory requirements, KV cache footprint, and tokens/sec generation benchmarks for running Qwen 2.5 Coder 32B Instruct across local GPUs, Apple Silicon Macs, and cloud instances.

✓ FITS IN VRAM25.22 GB (47%)~8 t/s

Model & Target Hardware

interactive
The #1 Open-Source Coding Benchmark Model for 24GB–32GB GPUs
GPU Topology / Quantity:Single GPU / Unified SoC
Qwen 2.5 Coder 32B Instruct on Apple Mac Mini M4 Pro (64GB Unified Memory)

✓ Fits Comfortably in VRAM

✓ FITS IN VRAM
Required VRAM
25.22 GB
47% of hardware capacity (54 GB)
Est. Decode Speed
~8 tok/s
Dense model @ 273 GB/s
Available Headroom
+28.78 GB
Safe for OS display & full context
Memory Allocation & Headroom
25.22 GB allocated of 54 GB capacity
47% utilized
Weights: 19.5 GB
KV: (32K): 4.29 GB
Overhead: 1.43 GB
Free Headroom: +28.78 GB
⚡ Architecture & Throughput Transparency: Single-user decode speed (~8 tok/s) is memory-bandwidth bound at batch size = 1 on Apple Mac Mini M4 Pro (64GB Unified Memory) (273 GB/s). Prompt prefill / TTFT (~116 tok/s) is compute-bound and utilizes GPU Tensor cores. Actual latency varies with FlashAttention-2 and runtime engine (Ollama/vLLM/llama.cpp).
OLLAMA_FLASH_ATTENTION=1 OLLAMA_KV_CACHE_TYPE=q8_0 ollama run qwen2.5-coder:32b

Quantization Precision Matrix

32K ctx • KV: Q8_0
QuantizationWeightsKV CacheTotal VRAMEst. SpeedFit Status
FP1616 bpw65 GB4.29 GB72.32 GB (134%)~1 t/sPARTIAL
Q8_08.5 bpw34.45 GB4.29 GB40.7 GB (75%)~5 t/sFITS
Q6_K6.56 bpw26.65 GB4.29 GB32.62 GB (60%)~6 t/sFITS
Q5_K_M5.68 bpw23.07 GB4.29 GB28.92 GB (54%)~7 t/sFITS
Q4_K_M4.8 bpw19.5 GB4.29 GB25.22 GB (47%)~8 t/sFITS
FP44.25 bpw17.23 GB4.29 GB22.87 GB (42%)~9 t/sFITS
IQ3_XS3.3 bpw13.32 GB4.29 GB18.83 GB (35%)~12 t/sFITS

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Hardware Compatibility Matrix for Qwen 2.5 Coder 32B Instruct

Standard Q4_K_M precision with 32K context window and Q8_0 KV cache

18 Systems Benchmarked
Hardware SystemVRAM EnvelopeRequired VRAMHeadroomEst. Decode SpeedCompatibilityTest Fit
NVIDIA GeForce RTX 5090 (32GB GDDR7)
Consumer GPU • 1792 GB/s
32 GB25.22 GB+6.78 GB~59 tok/s✓ FITSTest Fit →
NVIDIA GeForce RTX 4090 (24GB GDDR6X)
Consumer GPU • 1008 GB/s
24 GB25.22 GB-1.22 GB~7 tok/s⚡ PARTIALTest Fit →
2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)
Multi-GPU Rig • 936 GB/s
48 GB25.22 GB+22.78 GB~28 tok/s✓ FITSTest Fit →
NVIDIA GeForce RTX 5080 (16GB GDDR7)
Consumer GPU • 960 GB/s
16 GB25.22 GB-9.22 GB0 (OOM)✕ OOMTest Fit →
NVIDIA RTX 4070 Ti Super (16GB)
Consumer GPU • 672 GB/s
16 GB25.22 GB-9.22 GB0 (OOM)✕ OOMTest Fit →
NVIDIA GeForce RTX 3060 (12GB)
Consumer GPU • 360 GB/s
12 GB25.22 GB-13.22 GB0 (OOM)✕ OOMTest Fit →
Apple Mac Mini M4 Pro (64GB Unified Memory)
Apple Silicon • 273 GB/s
54 GB25.22 GB+28.78 GB~8 tok/s✓ FITSTest Fit →
Apple Mac Studio M4 Max (128GB Unified Memory)
Apple Silicon • 546 GB/s
112 GB25.22 GB+86.78 GB~17 tok/s✓ FITSTest Fit →
Apple Mac Studio M5 Ultra (256GB Unified Memory)
Apple Silicon • 890 GB/s
236 GB25.22 GB+210.78 GB~28 tok/s✓ FITSTest Fit →
AMD Strix Halo Mini-PC (Ryzen AI Max+ 395 128GB)
Unified APU / Mini-PC • 256 GB/s
110 GB25.22 GB+84.78 GB~7 tok/s✓ FITSTest Fit →
NVIDIA DGX Spark (128GB Grace-Blackwell Unified)
AI Appliance • 273 GB/s
118 GB25.22 GB+92.78 GB~9 tok/s✓ FITSTest Fit →
NVIDIA H100 SXM (80GB HBM3 Cloud GPU)
Datacenter Cloud GPU • 3350 GB/s
80 GB25.22 GB+54.78 GB~118 tok/s✓ FITSTest Fit →
NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)
Consumer GPU • 896 GB/s
16 GB25.22 GB-9.22 GB0 (OOM)✕ OOMTest Fit →
NVIDIA GeForce RTX 5070 (12GB GDDR7)
Consumer GPU • 672 GB/s
12 GB25.22 GB-13.22 GB0 (OOM)✕ OOMTest Fit →
NVIDIA GeForce RTX 4080 Super (16GB GDDR6X)
Consumer GPU • 736 GB/s
16 GB25.22 GB-9.22 GB0 (OOM)✕ OOMTest Fit →
AMD Radeon RX 7900 XTX (24GB GDDR6)
Consumer GPU • 960 GB/s
24 GB25.22 GB-1.22 GB~6 tok/s⚡ PARTIALTest Fit →
AMD Radeon RX 7900 XT (20GB GDDR6)
Consumer GPU • 800 GB/s
20 GB25.22 GB-5.22 GB~5 tok/s⚡ PARTIALTest Fit →
Apple Mac Studio M2 Ultra (192GB Unified Memory)
Apple Silicon Workstation • 800 GB/s
144 GB25.22 GB+118.78 GB~25 tok/s✓ FITSTest Fit →