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Western Digital Caviar SD 400 GB SATA 7200 RPM 16MB Cache $186 |
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Written by Sleepy Egg
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Sunday, 11 September 2005 |
Western Digital Caviar SD 400 GB SATA 16MB Cache 7200 RPM (WD4000KD) for $186 shipped free. Item 150175 - Tax in GA.
Buy it in Monarch Computer
Product Description:
Manufacturer Part Number: WD4000KD
WD Caviar SE16 next-generation SATA hard drives feature a 16 MB cache for lightning-fast performance. Yes, these reliable drives are fast, but they still deliver technologically advanced acoustics and cool operation. Designed for high-performance computers, multimedia and gaming systems.
16 MB cache -- A massive 16 MB cache makes these ultra-fast drives the perfect solution for the fully loaded PC with a fast processor.
Cool operating temperature ? WD hard drives are designed to have the lowest power consumption of any high-capacity desktop-class hard drive which lowers the operating temperature for enhanced drive reliability.
Whisper quiet ? These highly-reliable drives deliver technologically advanced acoustics. With its WhisperDrive? and SoftSeek? technologies, WD has minimized noise to levels virtually imperceptible to the human ear in home and business environments.
Performance Specifications
Rotational Speed 7,200 RPM (nominal)
Buffer Size 16 MB
Average Latency 4.20 ms (nominal)
Read Seek Time (Average) 8.9 ms
Write Seek Time (Average) 10.9 ms (average)
Track-To-Track Seek Time 2.0 ms (average)
Full Stroke Seek 21.0 ms (average)
Buffer To Host (Serial ATA) 150 MB/s (Max)
Buffer To Disk 748 Mbits/s (Max)
Buffer To Disk 65 MB/s (Sustained)
Number of Heads (Physical) 8
Physical Specifications
Formatted Capacity 400,074 MB
Capacity 400 GB
Interface SATA 150 MB/s
Actuator Type Rotary Voice Coil
Number of Platters 4
Bytes Per Sector 512
User Sectors Per Drive 625,142,448
Servo Type Embedded
Physical Dimensions
English
Height (English) 1.028 Inches (Max)
Length (English) 5.787 Inches (Max)
Width (English) 4.00 Inches (+/- 0.010 inch)
Weight (English) 1.32 Pounds (+/- .10 lb)
Metric
Height (Metric) 26.1 mm (Max)
Length (Metric) 147 mm (Max)
Width (Metric) 101.6 mm
Weight (Metric) 0.6 kg (+/- .082 kg)
Environmental Specifications
Operating Shock (Read) 65G, 2 ms
Non-operating Shock 250G, 2 ms
Idle Mode 28 dBA (average)
Seek Mode 0 33 dBA (average)
Seek Mode 3 29 dBA (average)
Operating Temperature (English) 41° F to 131° F
Non-operating Temperature (English) -40° F to 149° F
Operating Temperature (Metric) 5° C to 55° C
Non-operating Temperature (Metric) -40° C to 65° C
Operating Humidity 5-95% RH non-condensing
Non-operating Humidity 5-95% RH non-condensing
Operating Altitude (English) -1,000 feet to 10,000 feet
Non-operating Altitude (English) -1,000 feet to 40,000 feet
Operating Altitude (Metric) -305M to 3,050M
Non-operating Altitude (Metric) -305M to 12,200M
Operating Vibration
- Linear 20-300 Hz, 0.75G (0 to peak)
- Random 10-300 Hz, 0.004 g² / Hz
Non-operating Vibration
- Low Frequency 5-20 Hz, 0.195 inches (double amplitude)
- High Frequency 20-500 Hz, 4.0G (0 to peak)
OEM Product
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