Just to be sure, go in control panel > system and security > system > windows experience index.
Under your base score, there is a small printer icon with a link: "View and print detailed performance and system information"...click on it. a new window will open.
Scroll down the window until you find the voice "graphics":
I need to know the amount of total graphics memory, dedicated graphics memory, system dedicated memory and shared graphics memory.
If you can post a screenshot it would be better.