Q: I am getting a new computer and will be using it primarily for gaming. Should I go with a 2.4GHz Quad Core processor or a 3.0GHz Dual Core?
A: When it comes to video gaming, processor speed is one of the most important factors. Most video games right now are not built to take advantage of multiple processors or multiple cores in a processor so the number of processors or cores really is not a major factor. You should be more worried about cores when you do multiple things at a time not when you are planning on putting all your computers energy into one task.
So I would say go with the 3.0GHz Dual Core processor. This will allow your computer to do all the background processing tasks on one core while your game can run quickly on the other core at a faster clock speed.