PATA - Enhanced integrated drive electronics (EIDE), also called Parallel ATA (PATA), hard drives have been the standard in the computer industry for more than 10 years.
SATA - Serial ATA (SATA) hard drives are quickly becoming the new standard. Motherboard manufacturers now include SATA inputs on their boards. Because of their considerably narrower cables, SATA hard drives provide increased airflow and less clutter and in the computer system compared to PATA drives.
The performance difference - PATA drives support data transfer rates up to 100MB/sec, and all WD Caviar Blue SATA drive support 3 Gb/s transfer rates.
How to choose - Our handy Interface Guide can help you make your selection.

WD Caviar Blue is available in 8 MB, 16 MB, and 64 MB cache sizes. Bigger cache memory yields faster performance.

We offer drives ranging from 80 GB to 1 TB. Pick the biggest capacity your budget will allow. You can never have too much storage space.

We understand the importance of your data, and we are committed to protecting that data with exceptionally reliable products, advanced data protection technology and superior customer support.

Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating.

The technology that Tom's Hardware Guide called "very fast and nearly silent" is used throughout this family of drives. Our WhisperDrive technology minimizes noise to levels near the threshold of human hearing. To cut seek noise, SoftSeek technology streamlines read/write seeking algorithms, resulting in more efficient operation.

The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

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

We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems.