|The term CARD is frequently mis-used. |
If a hardware device is built into the mboard, it cannot be removed, and IT'S NOT A CARD !
If the video chipset is on an actual physical CARD that can be plugged into and unplugged from a mboard slot, it DOES have dedicated memory - video ram - on the card that is not shared with anything else.
When you're using a video chipset built into the mboard - onboard video - the video chipset shares part of the ram installed in the mboard - it's NOT dedicated memory.