When sourcing Smart TV Boards (Mainboards), you must prioritize the Chipset (SoC), as it determines processing power. Look for high-performance solutions like Amlogic, Realtek, or MediaTek with at least Quad-core architecture. Ensure the RAM/ROM configuration meets modern app requirements; a minimum of 1.5GB DDR + 8GB Flash is standard, though 2GB+16GB is preferred for 4K performance. Additionally, verify LVDS or V-by-One interface compatibility to ensure the board matches your specific LCD/LED panel resolution.