Key TakeawaysExpectations for Nvidia’s earnings release Wednesday are on the rise, in what could make it harder for the AI chipmaker to impress investors.Consensus estimates for Nvidia’s second-quarter revenue and earnings climbed by hundreds of millions of dollars within the last 48 hours alone. Nvidia shares gained more than 4% Friday and have risen about 160% since the start of the year. Expectations for Nvidia’s (NVDA) earnings release Wednesday are on the rise, in what could make it harder for the arti ...