Compaq 7470 Service Guide - Page 77

Maintenance and Service Guide Compaq Presario 7400 Series Computers MSG index Product Description Home Removal & Replacement Troubleshooting Jumper & Switch Information Illustrated Parts Catalog Specifications System Power supply Diskette drive Hard drives DVD drive CD drives Mouse Fax/modem Zip drive System SPECIFICATIONS Western Digital hard drives Click link for specifications on Seagate or Quantum hard drives. Western Digital Hard Drives - 3.5" 8.4-GB 10.0-GB 13.0-GB Compaq Part Number Formatted Capacity 148611- 144364- 144365- 001 001 001 Physical (MB) 8455.2 MB 10005 MB 13520.1 MB Data Transfer Rate Disk to Buffer (Mb/second) Interface w/o IORDY Interface w/ IORDY UDMA Typical Seek Time (including settling) 87.9 233.57 12.5 16.6 66.6 87.9 233.57 12.5 16.6 66.6 87.9 233.57 12.5 16.6 66.6 Track to Track (ms) Average (ms) Full Stroke (ms) Disk Rotational Speed (RPM) Data Cylinders Physical Logical 2.0 - 5.0 2.0 - 5.0 2.0 - 5.0 9.5 - 15.0 9.5 - 15.0 9.5 - 15.0 19 - 23 19 - 23 19 - 23 5400 +/- 5400 +/- 5400 +/- 0.5 0.5 0.5 percent percent percent 16579 16383 16579 16383 16579 16383 Data Heads/ Cylinder Physical Logical 3 3 4 16 16 16 Sectors per Track Physical Logical 282 - 504 282 - 504 282 - 504 (20 zones) (20 zones) (20 zones) 63 63 63