AMD graphics card suggestion?

I have a lenovo g500 laptop with AMD R5 M230 but i can't run assassins creed 4 in my pc it lags very much can anyone suggest me an AMD hd series card

I seriously doubt you can upgrade the graphics card in that laptop which is the same as almost every laptop out there. When you purchase a laptop, you have to purchase it at the level of performance you expect to need as they are almost always not upgradeable.

In most cases you can't upgrade a laptop's graphics card, you're stuck with what you have.

Are you sure you can upgrade it?

I've been Googling for 10 minutes but haven't found anything that says you can upgrade the video card.

A regular video card like what Spaceman suggested will not work with your laptop.