I'm looking into buying/building a new computer. I'm kind of a noob with regards to computer hardware, so I'd rather not overclock. With that in mind, are Core 2 Duo's still better than AMD's? Even if they have lower clockspeeds? For example, the AMD 64X2 5400 is about equivalent to the Intel core 2 6600, but the AMD is 2.8GHz, the Intel is 2.13. Even at these speeds, are the Intels still better? What percentage better are the Intels?