It's a measure of sheer scale of tech-sector dominance that Wednesday's results from the most valuable chipmaker probably overshadows a readout on the Federal Reserve's most recent deliberations. Either way, the keenly awaited quarterly update from artificial intelligence darling Nvidia and the minutes of the Fed's Jan 30-31 meeting will vie for most market attention later. As the AI-infused trebling of Nvidia's stock price over the past year now makes it a top five market cap, jitters about whether its latest results can continued to meet a sky-high bar of expectations were largely responsible for the sharp retreat of Wall St benchmarks this week.