The verdict

Plex
Intel Arc A380 transcodes more streams (~20 vs ~12).
Local AI
Nvidia Tesla M40 has more VRAM (24GB vs 6GB) - up to ~33B (Q4).
Fit
Intel Arc A380 is easier to add to a mini-PC (low-profile PCIe).

Which wins for each job

Job Intel Arc A380 Nvidia Tesla M40
Plex transcode ~20 streams win ~12 streams
Frigate NVR ~25 cameras ~25 cameras
Local LLM 6GB VRAM 24GB VRAM win
Fits a mini-PC low-profile PCIe win full-size PCIe, DIY build

Approximate - capacity estimates from curated specs, the same logic as the recommender. Verify against your exact setup. Prices move; check the retailer.

Full specs

Spec Intel Arc A380 Nvidia Tesla M40
Price (list) $130 $120
Type gpu gpu
Interface pcie pcie
Transcode H.264/HEVC/AV1 encode H.264/HEVC (NVENC Maxwell)
Frigate detector OpenVINO TensorRT
TOPS - -
VRAM (GB) 6 24
Low profile yes no
GPU sharing - vgpu (unlock)
Power (W) 75 250