Western Digital 160 GB Caviar Blue SATA 7200 RPM 8 MB Cache Bulk/OEM Desktop Hard Drive WD1600AAJS WD Caviar Blue hard drives are available with either SATA or EIDE interface in a variety of cache sizes with a multitude of available features Whisper Drive technology minimizes noise to levels near the threshold of human hearing IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration