Model
Brand 	Western Digital
Series 	Caviar SE16
Model 	WD7500AAKS
Performance
Interface 	SATA 3.0Gb/s
Capacity 	750GB
RPM 	7200 RPM
Cache 	16MB
Average Seek Time 	8.9ms
Average Write Time 	10.9ms
Average Latency 	4.2ms
Physical Spec
Form Factor 	3.5"
Features
Features 	Top performance for Windows Vista
Perpendicular Magnetic Recording (PMR) - The latest generation of WD Caviar SE16 drives employs PMR technology to achieve even greater areal density.
IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration.
SecurePark - Parks the recording heads off the disk surface during spin up, spin down and when the drive is off. This ensures the recording head never touches the disk surface resulting in improved long term reliability due to less head wear, and improved non- operational shock tolerance.
StableTrac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations.
Performance Specifications
Rotational Speed 	7,200 RPM (nominal)
Buffer Size 	16 MB
Average Latency 	4.20 ms (nominal)
Start/Stop Cycles 	50,000 minimum
Warranty 	3-year
  	 
Seek Times
Read Seek Time 	8.9 ms
Write Seek Time 	10.9 ms (average)
Track-To-Track Seek Time 	2.0 ms (average)
Full Stroke Seek 	21.0 ms (average)
  	 
Transfer Rates
Buffer To Host (Serial ATA) 	3 Gb/s (Max)
Buffer To Disk 	972 Mbits/s (Max)
  	 
Physical Specifications
Formatted Capacity 	750,156 MB
Capacity 	750 GB
Interface 	SATA 3 Gb/s
User Sectors Per Drive 	1,465,149,168
  	 
Physical Dimensions
English
Height 	1.028 Inches (Max)
Length 	5.787 Inches (Max)
Width 	4.00 Inches (� 0.010 inch)
Weight 	1.39 Pounds
  	 
Metric
Height 	25.4 mm (Max)
Length 	147 mm (Max)
Width 	101.6 mm
Weight 	0.63 kg
  	 
Environmental Specifications
Shock
Operating Shock (Read) 	65G, 2 ms
Non-operating Shock 	350G, 2 ms
  	 
Acoustics
Idle Mode 	28 dBA (average)
Seek Mode 0 	33 dBA (average)
Seek Mode 3 	29 dBA (average)
  	 
Temperature (English)
Operating 	32� F to 140� F
Non-operating 	-40� F to 149� F
  	 
Temperature (Metric)
Operating 	-0� C to 60� C
Non-operating 	-40� C to 65� C
  	 
Humidity
Operating 	5-95% RH non-condensing
Non-operating 	5-95% RH non-condensing
  	 
Altitude (English)
Operating 	-1,000 feet to 10,000 feet
Non-operating 	-1,000 feet to 40,000 feet
  	 
Altitude (Metric)
Operating 	-305M to 3,050M
Non-operating 	-305M to 12,200M
  	 
Vibration
Operating
Linear 	20-300 Hz, 0.75 G (0 to peak)
Random 	7-500 Hz (0.00221 g2 / Hz)
  	 
Non-operating
Low Frequency 	10-300 Hz, 0.195 inches (double amplitude)
High Frequency 	300-500 Hz, 5.0G (0 to peak)
  	 
Electrical Specifications
Current Requirements
12 VDC
Read/Write 	460 mA
Idle 	450 mA
Standby 	6 mA
Sleep 	6 mA
  	 
5 VDC
Read/Write 	650 mA
Idle 	600 mA
Standby 	180 mA
Sleep 	180 mA
  	 
Power Dissipation
Read/Write 	8.77 Watts
Idle 	8.40 Watts
Standby 	0.97 Watts
Sleep 	0.97 Watts