Its always worth a shot. Depending on the game you can anywhere from 5-10 FPS. It also gives you some great experience and knowledge of your PC, its always good to know how far your machine can be pushed. As a note when overclocking dont do to much to fast, be patient and use small increments then test for stability. Some people have a habit of pushing Voltage, core and memory clocks to the max from the start and then pop no more GPU.