GreenPower SATA Hard Drives - Western Digital Caviar

Western Digital Caviar Green drives yield an average drive power savings of 4-5 watts over other drives making it possible to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.  This power savings equates to reducing CO2 emission by up to 13.8 kilograms per drive per year - the equivalent of taking a car off the road for 3 days each year*. 

Cool and Quiet - Western Digital GreenPower technology yields lower operating temperatures for increased reliability and low acoustics for ultra-quiet PCs and external drives. 

Perfect for external drives - External drive manufacturers can eliminate the need for a fan in a high-capacity product with a Western Digital Caviar Green drive, the coolest and quietest in its class. External drives with Western Digital Caviar Green drives on board can save up to $14.00 per year in electricity costs.

IntelliPower - A fine-tuned balance of spin speed, transfer rate and caching algorithms designed to deliver both significant power savings and solid performance. Additionally, Western Digital Caviar Green drives consume less current during startup allowing lower peak loads on systems as they are booted.

IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration.

IntelliPark - Delivers lower power consumption by automatically unloading the heads during idle to reduce aerodynamic drag.

Perpendicular Magnetic Recording (PMR) - Employs PMR technology to achieve even greater areal density.

StableTrac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations. 

*Assumes that a car produces 1.60 CO2 pounds per Kwatt/hours/year. Calculation of automobile emissions depends on the car's g/km emission levels and km/year of driving.