A multi-billion-dollar gap has emerged in the estimated cost of powering the AI revolution, pitting a new bullish forecast from Barclays against Nvidia Corp. (NASDAQ:NVDA) CEO Jensen Huang's own ambitious projections.In a note upgrading its price target on NVDA to $240, Barclays revealed its AI capacity tracker, which estimates over$2 trillion in planned AI-related spending.NVDA Still The ‘Most Attractive’ Despite Barclays CalculationThe bank noted it uses a conversion of $50 billion to$60 billion in tota ...