The verdict

CPU
Beelink GTR9 has 4x the CPU throughput (54,968 vs 13,700 PassMark).
Plex
Ugreen NASync DXP6800 Pro transcodes more 4K HDR streams (~8 vs ~5).
Idle power
Beelink GTR9 idles lower (16W vs 24W) - cheaper to run 24/7.
RAM ceiling
Beelink GTR9 takes more RAM (128GB vs 64GB).

Which wins for each job

Job Beelink GTR9 Ugreen NASync DXP6800 Pro
Plex / Jellyfin ~5 streams ~8 streams win
Frigate NVR add a detector ~6 cameras win
Proxmox / VMs 54,968 PassMark win 13,700 PassMark
Firewall / router 2 NICs 2 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 Beelink GTR9 Ugreen NASync DXP6800 Pro
Price (list) $1,985 $1,099
CPU AMD Ryzen AI Max+ 395 Intel Core i5-1235U
Cores / threads 16 10
PassMark 54,968 13,700
iGPU Radeon 8060S (RDNA3.5) Iris Xe (80 EU)
NICs 2 2
NIC model Dual 10GbE Marvell AQC113 10GbE
RAM max (GB) 128 64
M.2 free 1 2
PCIe slot none none
Idle (W) 16 24
TDP (W) 140 15