Western Digital 1 TB AV-GP SATA 3 Gb/s Intellipower 32 MB Cache Bulk/OEM AV Hard Drive- WD10EVDS Power-conserving WD AV-GP drives offer significant power savings and thermally optimized operation resulting in lower cost SilkStream - Optimized for smooth, continuous digital video playback of up to twelve simultaneous HD streams. Ideal for set-top boxes (PVR, DVR and IPTV), media servers, media centers, and surveillance applications.