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Chapter 2 System Overview
Compaq Deskpro EXS and Workstation 300 Personal Computers
Featuring the Intel Pentium 4 Processor
First Edition – December 2000
2-16
Table 2-9. 48x CD-ROM Drive Specifications
Table 2-9.
48x CD-ROM Drive Specifications
(SP# 187217-B21)
Parameter Measurement
Interface Type IDE
Transfer Rate:
Max. Sustained
Burst
4800 KB/s
16.6 MB/s
Media Type Mode 1,2, Mixed Mode, CD-DA,
Photo CD, Cdi, CD-XA
Capacity:
Mode 1, 12 cm
Mode 2, 12 cm
8 cm
550 MB
640 MB
180 MB
Center Hole Diameter 15 mm
Disc Diameter 8/12 cm
Disc Thickness 1.2 mm
Track Pitch 1.6 um
Laser
Beam Divergence
Output Power
Type
Wave Length
53.5 +/- 1.5 °
53.6 0.14 mW
GaAs
790 +/- 25 nm
Average Access Time:
Random
Full Stroke
<100 ms
<150 ms
Audio Output Level 0.7 Vrms
Cache Buffer 128 KB
Table 2-10. Hard Drive Specifications
Table 2-10.
Hard Drive Specifications
Parameter 18.0 GB 20.0 GB 40.0 GB
Drive Size 3.5” 3.5” 5.25”
Interface Ultra 160 SCSI UATA/100 UATA/100
Drive Protection System Support? Yes Yes Yes
Transfer Rate (max) 160 MB/s 100 MB/s 100 MB/s
Typical Seek Time (w/settling) [1]
Single Track
Average
Full Stroke
1.7 ms
8.5 ms
15 ms
2.0 ms
9.5 ms
21 ms
1.0 ms
9.0 ms
20 ms
Disk Format (logical):
# of Cylinders
# of Data Heads
# of Sectors per Track
16383
16
63
16383
16
63
16383
16
63
Rotation Speed 10,000 RPM 7200 RPM 7200 RPM
Drive Fault Prediction SMART III SMART III SMART III
NOTE:
Actual times may vary depending on specific drive installed.
All EMEA units feature Quiet Drives.
[1] Operates at 66 MB/s in these systems.