WD Raptor vs 400GB Samsung - Speed vs Size - Western Digital 150GB Raptor Specs

Article Index
WD Raptor vs 400GB Samsung - Speed vs Size
Western Digital 150GB Raptor Specs
Samsung 400GB Drive Specs
HDTach Performance Comparison
File Copy Test Performance
Page 6

Western Digital Raptor 150GB 10,000 RPM SATA W/NCQ and 16MB Cache Specifications

Physical Specifications
Formatted Capacity: 150,039 MB
Capacity: 150 GB
Interface: SATA 150 MB/s
Actuator Type: Rotary Voice Coil
Number of Heads (Physical): 4
Number of Platters: 2
Bytes Per Sector: 512
User Sectors Per Drive: 293,046,768
Servo Type: Embedded

Performance Specifications
Rotational Speed: 10,000 RPM (nominal)
Buffer Size: 16 MB
Average Latency: 2.99 ms (nominal)
Contact Start/Stop Cycles: 20,000 minimum



Seek Times
Read Seek Time: 4.6 ms
Write Seek Time: 5.2 ms (average)
Track-To-Track Seek Time: 0.4 ms (average)
Full Stroke Seek: 10.2 ms (average)

Transfer Rates
Buffer To Host (Serial ATA): 1.5 Gb/s (Max)
Buffer To Disk: 72 MB/s (Sustained)

Environmental Specifications
Operating Shock (Read): 65G, 2 ms
Non-operating Shock: 250G, 2 ms

Idle Mode: 39 dBA (average)
Seek Mode 0: 46 dBA (average)
Temperature (English)
Operating: 41° F to 131° F
Non-operating: -40° F to 149° F
Temperature (Metric)
Operating: 5° C to 55° C
Non-operating: -40° C to 65° C

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

Linear: 10-300 Hz, 3.0G (0 to peak)
Random: 10-300 Hz, 0.008 g² / Hz
Low Frequency: 10-300 Hz, 0.195 inches (double amplitude)
High Frequency: 300-500 Hz, 5.0G (0 to peak)

Physical Dimensions
Height: 26.1 mm (Max)
Length: 147 mm (Max)
Width: 101.6 mm
Weight: 0.822 kg (+/- .082 kg)

5-year warranty