The Seagate Barracuda STBD3000100 3TB 3.5" Internal Hard Drive is a high capacity internal one-disk hard drive. It's designed for use in power friendly consumer and commercial desktop computers and is great for personal storage. A disk speed of 7200 rpm provides fast data access. The Barracuda 7200 RPM drive delivers great performance at whisper-quiet acoustic levels, with reduced power consumption and heat generation. The reduction in power consumption equates to immediate cost savings during operation, while running at a lower temperature with reduced heat output increase the drive's useful life.