Getty ImagesNvidia’s former cash cow posted record sales in the first quarter, carrying the company to a sales beat.As the AI boom continues to, well, boom and Wall Street’s lofty expectations become harder to top, Nvidia found itself relying on an old friend to push it over the edge in its first quarter: gaming.The AI chip giant beat sales expectations by $792 million, propelled almost entirely by its gaming division, which outperformed Wall Street’s consensus by 32%.In fact, Nvidia gaming — th...