The processor or CPU is the brains of the personal computer - it does most of the calculations your game titles need to have to run (with the video card performing most of the graphics do the job). With it getting like an crucial part, you would instinctually go for the fastest - and most pricey - processor you could find, but there is a greater different to blowing money on a little something that will be obsolete in a year: receiving a processor that will play tomorrow's games at a lower selling price is the sweet spot for any gaming computer.