Western Digital Caviar Blue 1TB 3.5" 5400RPM Internal HDD WD Caviar Green hard drives reduce power consumption by up to 40% and offer best-in-class acoustics A fine-tuned balance of spin speed (5400 RPM), transfer rate and caching algorithms designed IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration. 1 TB capacity holds up to 200,000 digital photos, 250,000 MP3 files, and 120 hours of HD video. Need a reliable hard drive with a huge capacity Its 1TB storage capacity is perfect for story HD movies, music, games and other huge files. Despite its huge capacity and superb performance, the drive requires very little power to run. It is designed with energy efficiency in mind to satisfy energy-conscious users, delivering the perfect balance between performance, reliability and energy conservation. It features IntelliPower which makes the drive spin at a fine-tuned balance between performance and power consumption. The WD10EARS hard drive from Western Digital features 1TB of storage size in a 3.5" form factor. This drive connects to your system via the SATA 3 Gb/s interface so make sure you have an available port on your compatible motherboard. Advanced features of this HDD include a 64MB cache/buffer and 5400 rotational spin rate.