|"what can be the benifit to change card"|
You wouldn't be changing the card because you don't have a card. You're currently using the graphics that are built into the motherboard & they're not powerful enough to play the game. There's nothing you can do to make the game playable with your current hardware setup...you need to install a video CARD.
We already know which graphics you have, but we also need to know the make/model of your motherboard, which processor you have & how much memory. Then we should be able to recommend some hardware upgrades. But it's very possible that your system is just too old to be worth sinking any money into.