If you're AMD, you've got to be feeling pretty good right now. Intel's busy handling a lawsuit bigger than the left half of Russia, you're finally free of that dreaded manufacturing business and you've got a new pair of mainstream CPUs debuting at Computex. The first of the two is the dual-core 45nm Athlon II X2 250, which features a TDP of 65-watts and can whittle power consumption down to 50 percent when handling just "basic tasks." Then there's the first-ever dual-core AMD Phenom II, the X2 550 Black Edition. Built from