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SATA Hard Drives
40 GB, 300 MB/s, 2 MB Cache, 7200 RPM
WD Caviar SATA hard drives are designed for mainstream desktop personal computers. They feature a fast 7200 RPM spindle speed, a 2 MB cache buffer, and up to 250 GB of storage. WD Caviar drives are built to the highest standards of quality and reliability by people who understand the importance of your data
Fast 7200 RPM, 2 MB cache buffer
SATA - up to 300 MB/s burst transfer rates.
Quiet - Fluid Dynamic Bearing (FDB) technology - Less friction means more reliability; less heat, vibration, and noise.
- Performance Specifications
- Rotational Speed 7,200 RPM (nominal)
- Buffer Size 2 MB
- Average Latency 4.20 ms (nominal)
- Contact Start/Stop Cycles 50,000 minimum
- 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
- (NOTE: Drives manufactured prior to December 1, 2005 have a 150 MB/s buffer to host transfer rate.)
- Buffer To Host (Serial ATA) 300 MB/s (Max)
- Buffer To Disk 748 Mbits/s (Max)
- Physical Specifications
- Formatted Capacity 40,020 MB
- Capacity 40 GB
- Interface SATA 300 MB/s
- User Sectors Per Drive 78,165,360
- Physical Dimensions
- English
- Height 1.028 Inches (Max)
- Length 5.787 Inches (Max)
- Width 4.00 Inches (+/- 0.010 inch)
- Weight 1.60 Pounds
- Metric
- Height 26.1 mm (Max)
- Length 147 mm (Max)
- Width 101.6 mm
- Weight 0.73 kg
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