Western Digital 1.5 TB Caviar Green SATA Intellipower 64 MB Cache Bulk/OEM Desktop Hard Drive WD15EARS A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance IntelliSeek- Calculates optimum seek speeds to lower power consumption, noise, and vibration 1.5 TB capacity holds up to 300,000 digital photos, 375,000 MP3 files, and 180 hours of HD video 2 year limited warranty. Ships in Certified Frustration-Free Packaging