Lately, people have been complaining on which CPU to get, now, I finalize the question with this guide: Now, lets start with the 2.4GHz Quad-core. You see, the quad-core has 4 cores (duh) meaning it can handle more operations at once, meaning it can handle multiple process-heavy programs, like MS Word, Encarta, and many other apps at once, with little or no freezing, so if your a very 'productive' person, the quad-core is for you. Now let's move on to the dual-core. The dual-core cannot handle as many process-heavy programs at once as the quad core, but is faster than the quad-core. The dual-core is GREAT for PC gamers, becasue 3GHz is a lot of speed for a game--meaning it will have a great time running. So, if your a multitasker, the quad core is for you. If your a PC gamer, the dual core is for you. If your both, find $1200 and buy the 3GHz QX9650. Hope you enjoyed this crap guide!