The verdict

Plex
Intel Arc A310 transcodes video; Hailo Hailo-8L (M.2) is detection-only (no transcode).
Frigate
Intel Arc A310 handles more cameras (~25 vs ~16).
Local AI
Intel Arc A310 has 4GB VRAM (up to ~7B (Q3-Q4)); the other has none - not for LLMs.
Fit
Hailo Hailo-8L (M.2) is easier to add to a mini-PC (M.2, needs a spare slot).

Which wins for each job

Job Hailo Hailo-8L (M.2) Intel Arc A310
Plex transcode none ~15 streams win
Frigate NVR ~16 cameras ~25 cameras win
Local LLM none 4GB VRAM win
Fits a mini-PC M.2, needs a spare slot win low-profile PCIe

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 Hailo Hailo-8L (M.2) Intel Arc A310
Price (list) $70 $110
Type npu gpu
Interface m2-ae pcie
Transcode - H.264/HEVC/AV1 encode (Arc)
Frigate detector Hailo OpenVINO
TOPS 13 -
VRAM (GB) - 4
Low profile no yes
GPU sharing - -
Power (W) 2 75