The verdict

Plex
Nvidia Tesla T4 transcodes more streams (~24 vs ~12).
Local AI
Nvidia Tesla T4 has more VRAM (16GB vs 12GB) - up to ~20B (Q4).
Fit
Nvidia Tesla T4 is easier to add to a mini-PC (low-profile PCIe).

Which wins for each job

Job Nvidia RTX 4070 Super Nvidia Tesla T4
Plex transcode ~12 streams ~24 streams win
Frigate NVR ~25 cameras ~25 cameras
Local LLM 12GB VRAM 16GB VRAM win
Fits a mini-PC full-size PCIe, DIY build low-profile PCIe win

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 Nvidia RTX 4070 Super Nvidia Tesla T4
Price (list) $600 $600
Type gpu gpu
Interface pcie pcie
Transcode H.264/HEVC/AV1 encode (NVENC Ada) H.264/HEVC (NVENC Turing)
Frigate detector TensorRT TensorRT
TOPS - -
VRAM (GB) 12 16
Low profile no yes
GPU sharing - vgpu
Power (W) 220 70