ASRock NUC BOX-255H (Core Ultra 7 255H) vs MSI Cubi 5 (Core i5-13420H) for Local AI: Local AI Performance

Side-by-side specification comparison with AI model-fit analysis. Data sourced from manufacturer specs, verified 2026-07-21.

Most Memory: ASRock NUC BOX-255H (Core Ultra 7 255H)
Highest Bandwidth: ASRock NUC BOX-255H (Core Ultra 7 255H)
Highest NPU: ASRock NUC BOX-255H (Core Ultra 7 255H)
Lowest Price: MSI Cubi 5 (Core i5-13420H)
Best Memory/Price: ASRock NUC BOX-255H (Core Ultra 7 255H)
ASRock NUC BOX-255H (Core Ultra 7 255H)
ASRock 		MSI Cubi 5 (Core i5-13420H)
MSI
Price $699MSRP $449MSRP
AI Framework OpenVINO, DirectML OpenVINO (CPU)
CPU Cores 16 8
Ethernet 2.5GbE 2.5GbE
GPU Compute Units 8 48
GPU Intel Arc Intel UHD Graphics
Memory Bandwidth (GB/s) 102.4 83.2
Memory Bus Width 128-bit 128-bit
Memory (GB) 96 32
Memory Type DDR5 6400 SODIMM DDR5 5200 SODIMM
Memory Upgradeable Yes (DDR5 SODIMM) Yes (DDR5 SODIMM)
NPU TOPS 13 0
OCuLink / PCIe No No
OS Support Windows 11, Linux Windows 11, Linux
Platform Intel Arrow Lake-H Intel Raptor Lake-H
Storage Type NVMe Gen4 SSD NVMe Gen4 SSD
TDP (W) 65 45
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Model Fit Analysis

ASRock NUC BOX-255H (Core Ultra 7 255H)

Max Q4: 70B class models (85B params)
Usable AI memory: 46GB · Method: intel_igpu_bios_limited Conservative
Llama 3.1 8B ✓
Llama 3.1 70B ✓
Llama 3.2 1B ✓
Llama 3.2 3B ✓
Qwen 2.5 7B ✓
Qwen 2.5 14B ✓
Qwen 2.5 32B ✓
Qwen 2.5 72B ✓
Mistral 7B ✓
Mixtral 8x7B ✓
DeepSeek R1 7B ✓
DeepSeek R1 32B ✓
DeepSeek R1 70B ✓
Phi-3 Medium 14B ✓
Gemma 2 9B ✓
Gemma 2 27B ✓
Stable Diffusion XL ✓
Flux.1 Dev ✓
Flux.1 Schnell ✓

MSI Cubi 5 (Core i5-13420H)

Max Q4: 14B class models (21B params)
Usable AI memory: 14GB · Method: intel_igpu_bios_limited Conservative
Llama 3.1 8B ✓
Llama 3.1 70B ✗
Llama 3.2 1B ✓
Llama 3.2 3B ✓
Qwen 2.5 7B ✓
Qwen 2.5 14B ✓
Qwen 2.5 32B ✗
Qwen 2.5 72B ✗
Mistral 7B ✓
Mixtral 8x7B ✗
DeepSeek R1 7B ✓
DeepSeek R1 32B ✗
DeepSeek R1 70B ✗
Phi-3 Medium 14B ✓
Gemma 2 9B ✓
Gemma 2 27B ✗
Stable Diffusion XL ✓
Flux.1 Dev ✓
Flux.1 Schnell ✓

Specifications sourced from manufacturer datasheets. Prices are MSRP, verified 2026-07-21. Model-fit uses conservative estimates — actual performance varies. Methodology