[MasterSteve]

Newegg.com - Western Digital Caviar Green WD7500AADS 750GB 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive - Internal Hard Drives

Cool and quiet - GreenPower technology yields lower operating temperatures for increased reliability and low acoustics for ultra-quiet PCs and external drives.
IntelliPower - A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance.
Perpendicular Magnetic Recording (PMR) - Employs PMR technology to achieve even greater areal density.
Low power spin-up - WD Caviar Green drives consume less current during startup allowing lower peak loads.
Advanced power technology - Electronic components deliver best-in-class low power consumption for reduced power requirements and increased reliability.