The Constellation ES. 3 SATA drive offers the world's largest capacities in a 3.5 -inch form factor. Build cost-effective maximum capacity storage solutions with enterprise-class, 7200-RPM drives in capacities of 3TB. Among 3.5 -inch form factor drives, the Constellation ES. 3 features the lowest operating power in the industry-less than 10.68W on average. Additionally, Constellation ES. 3 hard drives further power reductions with enhanced PowerChoice technology.