Jim Cramer picked up a megaphone for Advanced Micro Devices Inc (NASDAQ:AMD), posting bluntly on X: "AMD headed to 75? Where are the sellers?" and "AMD not a seller to be found."His line of questioning underscores just how near-vertical AMD's recent run has become — raising the question: is this $80 billion market-cap rocket a frothy AI bubble waiting to pop, or is AMD on the cusp of a genuine breakout?Track AMD stock here.The Supply Vacuum Meets AI ManiaShares of AMD surged more than 25% on Monday, after t ...