These CPUs are the new hotness. And AMD is bringing back the X-factor, too. Just as Athlon X2 chips sport two processing cores, so too do the X4 models boast a quartet of processing resources. The model names are starting to get longer. The Phenom X4 Black Edition runs at 2. ICM-A V Ecs ICM-A V AMD AM2+ AM3 DDR2 It naturally features an unlocked clock multiplier to help make overclocking easier. The higher frequency calls for a little more[…]