Previously known as the Sonata III the Sonata III 500 is a mid-tower computer case from Antec. The main model of the Sonata family, the Sonata III 500 attempts to bring quality computer cases to the masses. Featuring a quality 500W EarthWatts power supply, the Sonata 3 is unbeatable for those who require a quality case and power supply at the cheapest cost. While not the strongest or quietest power supply, the 500W EarthWatts is 80+ certified, meaning it can deliver power efficiently, and at 500W it can provide ample power to even a hungry single card gaming system. Similar to the rest of Antec's lineup, the Sonata III 500 comes with a 120mm Antec TriCool fan for those uninterested in purchasing fans separately.