The verdict

Plex
Nvidia Quadro T600 transcodes more streams (~24 vs ~20).
Local AI
Intel Arc A750 has more VRAM (8GB vs 4GB) - up to ~8B (Q4).
Fit
Nvidia Quadro T600 is easier to add to a mini-PC (low-profile PCIe).

Which wins for each job

Job Intel Arc A750 Nvidia Quadro T600
Plex transcode ~20 streams ~24 streams win
Frigate NVR ~25 cameras ~25 cameras
Local LLM 8GB VRAM win 4GB VRAM
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 Intel Arc A750 Nvidia Quadro T600
Price (list) $200 $180
Type gpu gpu
Interface pcie pcie
Transcode H.264/HEVC/AV1 encode (Arc) H.264/HEVC (NVENC Turing)
Frigate detector OpenVINO TensorRT
TOPS - -
VRAM (GB) 8 4
Low profile no yes
GPU sharing - vgpu (unlock)
Power (W) 225 40