Mint Intel Corp. disclosed plans to take its Xeon chip line into bigger servers, posing stiffer competition for its own Itanium product line as well as technology offered by competitors. The company provided details of coming Xeon models that pack more electronic brains onto each piece of silicon and can be used in servers that use more chips. Intel, whose chips dominate low-end servers, hopes to take a much bigger share of larger systems. Intel’s new chips—expected to be available in servers early next year—are based on a design called...