The April scoreboard is in for the three biggest pure plays on artificial intelligence (AI) server hardware, and the spread between first and last is wider than the headline gains suggest. Shares of Dell Technologies (NYSE:DELL) closed the month up 28%, pulling away from Hewlett Packard Enterprise (NYSE:HPE) at 21% and Super Micro Computer (NASDAQ:SMCI) ... Dell, Super Micro, or HPE: Which AI Server Stock Crushed It in April?