Dell, HP, and Lenovo are leading desktop brands with unique strengths. Dell offers reliable performance with models like OptiPlex (business), XPS (high-performance), and Alienware (gaming). HP provides stylish, budget-friendly options such as EliteDesk (business), Pavilion (home use), and Omen (gaming). Lenovo is known for durability and innovation, featuring ThinkCentre (business), IdeaCentre (home), and Legion (gaming). Each brand suits different needs, from businesses to gamers and home users.