That's simple... the new Intel's Ivy Bridge microarchitecture is one generation (1-2 years) ahead AMD's Bulldozer microarchitecture.... the Ivy Bridge has better performance (way better) and better power consumption.
AMD stopped to create better microarchitecture after K8... the first Core 2 just put a widen gap between the two company in CPU terms... there are no way to AMD catch Intel again (except if Intel makes a mistake with your schedule Tick-Tock).
And for dedicaded graphics nVidia finally surpassed AMD with the new GTX 6xx generation (after two or three generations behind).
In terms of Integrated Graphics... AMD is the better choice yet but Integrated Graphics is not for hardcore gamers.







