Thanks to this group for all useful posts, I built my desk around new LG Oled CX 48", paired with 3090FE. Using Ergotron HX monitor arm for my standing desk. : r/OLED_Gaming
Kensington SmartFit Dual Monitor Arm (K60273WW)
M8.1: Adjustable Dual Monitor Arm | Humanscale
What to Consider When Buying a Monitor Arm For Your Standing Desk? - StandDesk