Head-to-Head
be quiet! Pure Power 13 M 1000W ATX 3.1 PSU vs GMKtec NucBox M5 Pro Mini PC
be quiet! Pure Power 13 M 1000W ATX 3.1 PSU
be quiet! · accessory
GMKtec NucBox M5 Pro Mini PC
GMKtec · mini pc
Winner for LLMs
Winner for Stable Diffusion
Winner for Power Efficiency
Overall Winner
GMKtec NucBox M5 Pro Mini PC leads in memory bandwidth (51 GB/s vs 0 GB/s), making it faster for LLM token generation. GMKtec NucBox M5 Pro Mini PC has — memory (32 GB vs 0 GB).
Spec Comparison
Performance Verdicts
Winner for LLM Inference
Mini PC winsGMKtec NucBox M5 Pro Mini PC wins clearly — 32 GB vs 0 GB means it can fit larger models entirely in memory. be quiet! Pure Power 13 M 1000W ATX 3.1 PSU requires CPU offloading for models above 0 GB, which drops throughput significantly.
Winner for Stable Diffusion / Image Generation
Mini PC winsNeither is optimised for image generation, but GMKtec NucBox M5 Pro Mini PC's 51 GB/s bandwidth makes generation faster. Both run SDXL via Metal (macOS) or ROCm (Linux). Expect slower generation times than a discrete GPU.
Winner for Power Efficiency
Mini PC winsGMKtec NucBox M5 Pro Mini PC draws 45W at peak vs 1000W — a 955W difference. Running AI workloads 12 hours/day, that's roughly 4183 kWh saved per year. For always-on inference, GMKtec NucBox M5 Pro Mini PC has meaningfully lower operating costs.
Overall Winner
Mini PC winsGMKtec NucBox M5 Pro Mini PC edges ahead overall — better memory, bandwidth, and user ratings for local AI workloads. The gap is real but not always worth the price difference; assess based on your primary use case.
Who Should Buy Which?
Buy the 3.1 PSU if…
Buy the be quiet! Pure Power 13 M 1000W ATX 3.1 PSU if budget is your primary constraint or if you need 0 GB of memory at a lower price point. Good for 7B–13B model inference.
Buy the Mini PC if…
Buy the GMKtec NucBox M5 Pro Mini PC if LLM inference speed is your priority — its 51 GB/s bandwidth delivers faster token generation. Also choose it for GMKtec ecosystem advantages.
Related Comparisons
Frequently Asked Questions
Q1Which runs Ollama faster — be quiet! Pure Power 13 M 1000W ATX 3.1 PSU or GMKtec NucBox M5 Pro Mini PC?
GMKtec NucBox M5 Pro Mini PC runs Ollama faster. Its 51 GB/s memory bandwidth vs 0 GB/s means faster token generation — roughly — more tokens/second on the same model. On Llama 3.1 8B, expect around 2 tok/s vs 0 tok/s.
Q2Can either mini PC run Llama 3 70B?
Neither mini PC has enough memory for Llama 3 70B without heavy CPU offloading (39 GB required at Q4_K_M). You would need a Mac Mini M4 Pro with 64 GB unified memory or a discrete GPU with 24 GB VRAM paired with ample system RAM.
Q3Which is better value for local AI in 2026?
GMKtec NucBox M5 Pro Mini PC offers better performance-per-dollar for AI workloads due to its 51 GB/s bandwidth advantage. However, if price is the primary concern and 7B–13B inference is the goal, both get the job done — the gap matters more at higher workloads and model sizes.
Q4Which has better software support for local AI?
Both run Ollama well. AMD-based mini PCs offer ROCm acceleration on Linux; Intel-based ones are adding OpenVINO support. macOS Apple Silicon has the most polished Ollama experience.
Full Reviews
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