The verdict

Frigate
Intel AI Boost NPU (Core Ultra 200V) handles more cameras (~58 vs ~5).
Fit
Google M.2 Accelerator A+E key is easier to add to a mini-PC (M.2, needs a spare slot).

Which wins for each job

Job Google M.2 Accelerator A+E key Intel AI Boost NPU (Core Ultra 200V)
Plex transcode none none
Frigate NVR ~5 cameras ~58 cameras win
Local LLM none none
Fits a mini-PC M.2, needs a spare slot win built into a CPU

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 Google M.2 Accelerator A+E key Intel AI Boost NPU (Core Ultra 200V)
Price (list) $30 -
Type tpu npu
Interface m2-ae built-in
Transcode - -
Frigate detector EdgeTPU (native) OpenVINO
TOPS 4 48
VRAM (GB) - -
Low profile no no
GPU sharing - -
Power (W) 2 0