The Western Digital 1 TB internal hard drive designed for desktop computers has 16 MB dedicated for disk buffering to ensure easy availability of regularly used data. This internal hard drive also has a high performance Serial-ATA, Serial-ATAII interface. With a high spindle speed for computing at increased speeds, the Western Digital 1 TB SATA hard drive also has effective Seek Time and Average Latency of 8.9ms and 4.17ms (respectively) for swift data location. The device to system data transfer rate is also considerably high on this SATA hard drive. The Western Digital 1 TB features S.M.A.R.T. Technology to keep a tab on hard drive efficiency and capacity.