Western Digital 1TB WD Caviar Blue 3.5" Internal Hard Drive

On average, each new product goes through 600,000 hours of testing. See the Western Digital Support site for full details. Buffer 64 MB. WD Blue WD10EZEX 1 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Desktop PC, Notebook Device Supported - 7200rpm.

eBay