The verdict

CPU
Lenovo M75q has 3.4x the CPU throughput (18,053 vs 5,333 PassMark).
Plex
Aoostar WTR Pro N100 transcodes more 4K HDR streams (~5 vs ~3).
Idle power
Lenovo M75q idles lower (12W vs 15W) - cheaper to run 24/7.
Networking
Aoostar WTR Pro N100 has more NICs (2 vs 1) - better for a firewall or VLAN trunk.
RAM ceiling
Lenovo M75q takes more RAM (64GB vs 32GB).

Which wins for each job

Job Aoostar WTR Pro N100 Lenovo M75q
Plex / Jellyfin ~5 streams win ~3 streams
Frigate NVR ~4 cameras win add a detector
Proxmox / VMs 5,333 PassMark 18,053 PassMark win
Firewall / router 2 NICs win 1 NICs
Local AI / LLM no slot no slot

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 Aoostar WTR Pro N100 Lenovo M75q
Price (list) $279 $280
CPU Intel Processor N100 AMD Ryzen 5 PRO 5650GE
Cores / threads 4 6
PassMark 5,333 18,053
iGPU Intel UHD Radeon Vega 7
NICs 2 1
NIC model Intel I226-V Realtek 1GbE
RAM max (GB) 32 64
M.2 free 0 0
PCIe slot none none
Idle (W) 15 12
TDP (W) 6 35