Western Digital announced its latest notebook hard drive today called the Scorpio 320GB SATA hard drive. This drive uses the 2.5-inch form factor for use in notebook computers and small external hard drive enclosures.

The drive is also very slim with a 9.5mm thickness and uses proprietary technology to keep the drive quiet. The transfer rate for the drive is 3 GB/s and it has a rotational speed of 5400rpm.

WD says the buffer size is 8MB and the average latency is 4.2 ms. The acoustics at idle are 24dBA and in seek mode 26 dBA. Power consumption is 2.5W in read/write, 2W at idle and 0.25W in standby. The Scorpio 320GB drive will cost $199.99.

Via WD