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EIDE Hard Drives
40 GB, 100 MB/s, 8 MB Cache, 7200 RPM
Cool, quiet and fast. WD Caviar SE drives offer superior performance and reliability, making them ideal for business and family desktops.
Fast - 8 MB cache - Keeps more of your data in high-speed memory for unsurpassed performance in its class. Fast 7200 RPM spindle speed and EIDE (Ultra ATA/100) for burst transfer rates up to 100 MB/s. For even higher performance, consider WD Caviar SE16 SATA 300 MB/s hard drives.
Cool - Cool operation results in the highest reliability, even in intensely hot environments such as digital video recorders. That's why these, the coolest on the market, are the drives of choice for the world's leading consumer electronics and PC manufacturers.
Quiet - The technology that Tom's Hardware Guide called "very fast and nearly silent" is used throughout this family of drives. Our WhisperDrive™ technology minimizes noise to levels near the threshold of human hearing. To cut seek noise, SoftSeek™ technology streamlines read/write seeking algorithms, resulting in more efficient operation
- Performance Specifications
- Rotational Speed 7,200 RPM (nominal)
- Buffer Size 8 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
- Buffer To Disk 591 Mbits/s (Max)
- Buffer to Host (EIDE)
- Mode 5 Ultra ATA 100.0 MB/s
- Mode 4 Ultra ATA 66.6 MB/s
- Mode 2 Ultra ATA 33.3 MB/s
- Mode 4 PIO 16.6 MB/s
- Mode 2 multi-word DMA 16.6 MB/s
- Physical Specifications
- Formatted Capacity 40,020 MB
- Capacity 40 GB
- Interface EIDE 100 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 1.32 Pounds
- Metric
- Height 26.1 mm (Max)
- Length 147 mm (Max)
- Width 101.6 mm
- Weight 0.6 kg
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