Device Initiated Power Management
When there are no commands on the HDD, this feature automatically switches on power saving mode and cuts down on electricity through the SATA cable. It can effectively reduce power consumption

ImpactGuard™
ImpactGuard™ prevents an HDD disc from vibrating when not assisted by the helping head media, which is parked in the landing zone.

Some hard drive companies design desktop-class drives with the SATA interface. To meet the demands of enterprise storage, WD is going one better. WD is the only company combining a 10,000 RPM enterprise-class mechanical platform with the SATA interface to meet all the demands of the enterprise environment—reliability, performance, and reduced cost.

From the secret performance labs at WD comes the revolutionary WD Raptor X SATA hard drive, the first ever drive with a view. Offspring of the immensely popular WD Raptor, fastest SATA drive on the planet, WD Raptor X focuses a large, crystal-clear lens on the drive to let you see into the inner workings and witness the drive in action.

Engineered for maximum speed! WD VelociRaptor, the newest member the unique class of 10,000 RPM SATA hard drives, combines a SATA 3 Gb/s interface and 16 MB cache, to deliver performance that's up to 35% faster than its speedy older brother.

16 MB Cache - Bigger cache means faster performance. A massive 16 MB cache combined with advanced acoustic and power-reducing technologies make these ultra-fast drives the perfect solution for the fully loaded PC.

Perpendicular Magnetic Recording (PMR) - The latest generation of WD Caviar SE16 drives employs PMR technology to achieve even greater areal density.
(750 GB only)

SecurePark™ - Parks the recording heads off the disk surface during spin up, spin down and when the drive is off.  This ensures the recording head never touches the disk surface resulting in improved long term reliability due to less head wear, and improved non- operational shock tolerance.

The Hitachi Deskstar 7K1000 hard disk drive leverages the industry’s most reliable perpendicular magnetic recording (PMR) techniques and the latest advancements in silent acoustics, shock protection, and head technology to maximize capacity, performance and field reliability. Best-in-class power management and thermal emissions help manufacturers meet energy compliance targets and extend drive life.

* A fine-tuned balance of spin speed, transfer rate, and caching algorithms designed to deliver both significant power savings and solid performance. Additionally, GreenPower drives consume less current during start up allowing more drives to spin up simultaneously resulting in faster system readiness.

IntelliPark™ - Delivers lower power consumption by automatically unloading recording heads during idle to reduce aerodynamic drag, and by disengaging read/write channel electronics.

Active Power Management - WD GreenPower drives monitor work load and automatically invoke idle mode whenever possible to further reduce unnecessary power consumption. Drive recovery time from idle mode is less than one second, providing seamless power management between the drive and the host controller.

An industry first, the Hitachi Deskstar 7K1000 hard disk drive delivers up to one terabyte of storage capacity for demanding consumer and commercial computing products. It leverages the industry’s most reliable perpendicular magnetic recording (PMR) techniques and the latest advancements in silent acoustics, shock protection, and head technology to maximize capacity, performance and field reliability. Best-in-class power management and thermal emissions help manufacturers meet energy compliance targets and extend drive life.

The performance of Samsung's SSD exceeds that of a similarly sized hard drive by more than 150%. For example, it can read data at a rate of 100MB per second and achieves write speeds of 80MB per second, which is more than twice as fast as comparable hard disk drives. Its speed lets PC users cut boot-up time in half when compared to a conventional 1.8-inch hard drive. As a non-volatile storage device, the SSD has no moving parts such as the motor, disks and heads of a hard drive.

Thus it eliminates spin-up time, seek time and rotational latency while delivering sustained high-speed data transfers. The SSD is also extremely friendly to its surroundings. Its lack of moving parts makes it noise free and its ultra-low power consumption virtually eliminates heat emissions.
The SSD is also highly rugged, standing up to shock and vibration damage while performing in extreme temperatures from 0 to 70 degrees Celsius.