Exactly what Jenny said. This sounds like it is a decent Core i5 processor with the graphics built in to the processor itself. It is probably a second generation Core i5 and not a third generation. They are wonderful for movies and email and Youtube, but not for games, especially newish ones. So the processor is fine, but the embedded graphics, not so much.
I would look for something better - look for one with a graphics card with discrete memory. It will probably cost more though.
In my PC corner for the winter, gaming and knitting.