The verdict

CPU
Beelink GTR9 has 1x the CPU throughput (54,968 vs 54,042 PassMark).
Idle power
Beelink GTR9 idles lower (16W vs 25W) - cheaper to run 24/7.
Networking
Minisforum MS-A2 has more NICs (4 vs 2) - better for a firewall or VLAN trunk.
RAM ceiling
Beelink GTR9 takes more RAM (128GB vs 96GB).
Local AI
Minisforum MS-A2 has a PCIe slot for a low-profile GPU - the other needs a DIY build for local LLMs.

Which wins for each job

Job Beelink GTR9 Minisforum MS-A2
Plex / Jellyfin ~5 streams ~5 streams
Frigate NVR add a detector add a detector
Proxmox / VMs 54,968 PassMark win 54,042 PassMark
Firewall / router 2 NICs 4 NICs win
Local AI / LLM no slot PCIe GPU slot 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 Beelink GTR9 Minisforum MS-A2
Price (list) $1,985 $639
CPU AMD Ryzen AI Max+ 395 AMD Ryzen 9 7945HX
Cores / threads 16 16
PassMark 54,968 54,042
iGPU Radeon 8060S (RDNA3.5) Radeon 610M (RDNA2)
NICs 2 4
NIC model Dual 10GbE Intel X710 (10G SFP+)
RAM max (GB) 128 96
M.2 free 1 1
PCIe slot none x16
Idle (W) 16 25
TDP (W) 140 55