Hi, let me point something out,
cheap and gaming should not be used in the same sentence when it comes to laptops. Unless the games you're planning to play are minecraft and minesweeper.
Look for a laptop with at least a 540m, better if fits into your budget. If none of the 540m models fit your budget, then I'm sorry but you'll have to settle for integrated graphics of AMD A10 or Intel HD 3000/4000 (both of which frankly aren't that great for gaming)