Intel is hatching a plan to regain market share from AMD sparking a price war that will hurt earnings. The plans are to cut prices by 50 percent on its high-end Pentium 4 chip. The chip giant will cut the price on its 1.8GHz Pentium 4 from $562 to $260. And if that cut doesn't work, there could be "an additional 10 percent to 25 percent price cut on Oct. 28.".