This Hard Drive

NewEgg.com has the Western Digital Caviar WD6400AACS Green Power 640GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive for $75 + $0 shipping = $75 shipped.

Product description from NewEgg.com:

Reduced power consumption - WD has reduced power consumption by up to 40 percent compared to standard desktop drives with the combination of WD\’s IntelliSeek, NoTouch, and IntelliPower technologies
IntelliPower - 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.
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.

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