Buffer - Buffers are holding areas for data shared by devices that operate at different speeds or have different priorities. A buffer allows a device to operate without the delays that other devices might impose.
Form Factor/Type - The physical size of the hardware components in your system. For example, the form factor for an HDD might be 2.5 inches or 3.6 inches.
Interface - An interface is the means by which two independent systems communicate. For HDDs, the interface refers to a connector that plugs your HDD into your computer so it can receive power or data.
SATA - Serial Advanced Technology Attachment. It's a type of interface that connects a storage device to your computer's motherboard — think of it like an umbilical cord because it allows data to flow between the two. SATA is measured by how fast data transfers to/from the device. There are three SATA speeds, SATA I (1.5Gb/s), SATA II (3.0Gb/s or ATA-300) and SATA III (6.0Gb/s or ATA-600).
Spindle speed - The rotational frequency of the hard drive platter, measured in revolutions per minute (RPM). Spindle speed affects how fast the hard drive delivers data.
As hard drive capacities increase, the power required to run those drives increases as well. WD Caviar Green drives make it possible for energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.
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.
Helps enable eco-friendly PCs WD Caviar Green drives yield an average drive power savings of 4-5 watts over standard desktop drives making it possible for the energy-conscious customers to build systems with higher capacities and the right balance of system performance, ensured reliability, and energy conservation.
Cool and quiet WD GreenPower Technology yields lower operating temperatures for increased reliability and low acoustics for ultra-quiet PCs and external drives.
Massive capacity The most available capacity for storage-intensive programs and space-hungry operating systems with plenty of room left over for photos, music, and video.
Perfect for external drives External drive manufacturers can eliminate the need for a fan in a high-capacity product with a WD Caviar Green drive, the coolest and quietest in its class.