Is my mac powerful enough to run some demanding games ?

[Uly_]

Thanks you guys. I think the real problem in this macbook is the graphics card. In the most expensive mac, there's a dedicated nvidia card. But well, it's really too expensive for me. I read on the internet that you can actually use an external graphics card (like a nvidia one) with the thunderbolt port.

Would this work well with dolphin ? For example each time I wanna play my games I just have to plug in my graphics card ?