Western Digital WD1200JB 120GB IDE Hard Drive

Part# 810990


Western Digital WD1200JB 120GB IDE Hard Drive, WD1200JB, 120GB


Western Digital WD1200JB 120GB IDE Hard Drive

Western Digital Caviar Special Edition - WE1200JB 120GB hard drive at 7200RPM delivers data to users faster than any desktop hard drive has before. Perfect for games, DV editing and file server applications.


  • Capacities: 120 GB
  • Interface: Ultra ATA/100
  • Rotational Speed: 7200 RPM
  • Average Read Seek Time: 8.9 ms
  • Buffer Size: 8 MB


Rotational Speed 7,200 RPM (nominal)
Buffer Size 8 MB
Buffer To Disk 602.0 Mbits/s (Max)
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)
Average Latency 4.2 ms (nominal)
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
Cylinders 16,383
Number of Heads (Logical) 16
Number of Heads (Physical) 6
Sectors Per Track 63
Formatted Capacity 120,034 MB
Interface EIDE
Actuator Type Rotary Voice Coil
Number of Platters 3
Bytes Per Sector 512
User Sectors Per Drive 234,441,648
Servo Type Embedded
Dimension & Environmental
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 (+/- 0.14 pounds)
Operating Shock (Read) 65G, 2ms
Non-operating Shock 200G, 2 ms
Idle Mode 35 dBA (average)
Seek Mode 0 39 dBA (average)
Seek Mode 3 37 dBA (average)

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