Western Digital WD7500AACS 750GB SATA2 Power Saving Hard Drive
Specifications:

Mfr Part Number: WD7500AACS
Features
Reduced power consumption
Environmentally responsible
Lower cost of ownership
Capacity: 750 GB
Rotational Speed: IntelliPower (5400 to 7200 RPM)
Cache: 16 MB
Interface: SATA 300
Max. External Transfer Rate: 300 MB/s
Read Seek Time: 8.9 ms
Shock:
Operating: 65G @ 2ms
Non-operating: 250G @ 1ms
Power Dissipation:
Read/Write: 7.50 Watts
Idle: 4.0 Watts
Standby: 0.30 Watts
Sleep: 0.30 Watts
Dimensions (WxLxH): 4 x 5.787 x 1.028 inch / 101.6 x 147 x 26.1 mm
Weight: 1.61 lbs / 730 g