Selecting a professional NVR board requires balancing processing power with stability. Key technical factors include the Processor (SoC), typically from brands like HiSilicon or Novatek, which determines the maximum decoding resolution (e.g., 4K/8MP) and the number of channels (4, 8, 16, or 32) supported simultaneously. Ensure the board supports H.265+ compression technology to save up to 70% on bandwidth and storage costs. Additionally, verify the SATA interface capacity, as enterprise-grade boards should support at least 8TB to 14TB per HDD slot to accommodate long-term video retention.