HP has been rolling out a steady stream of Ivy Bridge-based upgrades over the past few weeks, and now it's the turn of the pro-oriented EliteBook W-series to get the long-awaited upgrade. The 8470W, 8570W and 8770W draw on Intel's faster dual Core i5 and quad Core i7 chips with respective choices of 14-, 15.6- and 17.3-inch screens. All of them pack AMD's FirePro for video duties, although big spenders at the larger two sizes can
