In order to properly utilize the Iris XE graphics card in your laptop, you typically need to install RAM in both memory slots. The amount of RAM required depends on the specific model of your laptop and the requirements for the Iris XE graphics card.
It is important to ensure that the RAM you install is compatible with your laptop and meets the requirements for the Iris XE graphics card. Installing the wrong type of RAM or not having enough RAM can cause issues with the graphics card and prevent it from functioning properly.
In addition to installing RAM in both slots, you should also make sure that the latest graphics drivers are installed, the Iris XE graphics card is set as the default GPU, and the memory and graphics card are configured correctly in the BIOS/UEFI.