HARDWARE FIT CHECK โ€ข DeepSeek-R1 Distill Qwen 32B + Apple Mac Studio M5 Ultra (256GB Unified Memory)25.41 GB / 236 GB VRAM

Can I Run DeepSeek-R1 Distill Qwen 32B on Apple Mac Studio M5 Ultra (256GB Unified Memory)?

Full VRAM footprint analysis, tokens/sec generation benchmark, and copy-paste Ollama & vLLM runtime commands for running DeepSeek-R1 Distill Qwen 32B (32.8B) on Apple Mac Studio M5 Ultra (256GB Unified Memory) (236 GB).

โœ… Runs 100% in GPU VRAM (Optimal Headroom)25.41 GB (11%)~28 t/s

Model & Target Hardware

interactive
Local Step-by-Step Math, Logic & Code Verification
DeepSeek-R1 Distill Qwen 32B on Apple Mac Studio M5 Ultra (256GB Unified Memory)

โœ“ Fits Comfortably in VRAM

โœ“ FITS IN VRAM
Required VRAM
25.41 GB
11% of hardware capacity (236 GB)
Est. Decode Speed
~28 tok/s
Dense model @ 890 GB/s
Available Headroom
+210.59 GB
Safe for OS display & full context
Memory Allocation & Headroom
25.41 GB allocated of 236 GB capacity
11% utilized
Weights: 19.68 GB
KV: (32K): 4.29 GB
Overhead: 1.44 GB
Free Headroom: +210.59 GB
โšก Architecture & Throughput Transparency: Single-user decode speed (~28 tok/s) is memory-bandwidth bound at batch size = 1 on Apple Mac Studio M5 Ultra (256GB Unified Memory) (890 GB/s). Prompt prefill / TTFT (~406 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 deepseek-r1:32b

Quantization Precision Matrix

32K ctx โ€ข KV: Q8_0
QuantizationWeightsKV CacheTotal VRAMEst. SpeedFit Status
FP1616 bpw65.6 GB4.29 GB72.94 GB (31%)~9 t/sFITS
Q8_08.5 bpw34.77 GB4.29 GB41.03 GB (17%)~16 t/sFITS
Q6_K6.56 bpw26.9 GB4.29 GB32.88 GB (14%)~20 t/sFITS
Q5_K_M5.68 bpw23.29 GB4.29 GB29.15 GB (12%)~23 t/sFITS
Q4_K_M4.8 bpw19.68 GB4.29 GB25.41 GB (11%)~28 t/sFITS
FP44.25 bpw17.38 GB4.29 GB23.03 GB (10%)~31 t/sFITS
IQ3_XS3.3 bpw13.45 GB4.29 GB18.96 GB (8%)~39 t/sFITS

Local Hardware Configurations & Pricing

High-bandwidth VRAM specs and current market prices
Apple Silicon236 GB VRAM

Apple Mac Studio M5 Ultra (256GB Unified Memory)

Massive MoE models (DeepSeek V4.1 Q3/Q4) & 70B FP16 workstation

890 GB/s210W TDP
Consumer GPU32 GB VRAM

NVIDIA GeForce RTX 5090 (32GB GDDR7)

Maximum tokens/sec on 27Bโ€“35B models & Blackwell FP4 quantization

1792 GB/s575W TDP
Consumer GPU24 GB VRAM

NVIDIA GeForce RTX 4090 (24GB GDDR6X)

The 24GB CUDA enthusiast standard for 14Bโ€“32B Q4_K_M models

1008 GB/s450W TDP
Multi-GPU Rig48 GB VRAM

2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

Best price-to-VRAM homelab rig for 70B Q4_K_M & Qwen 3.8 27B Q8

936 GB/s700W TDP

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