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Chapter 2 System Overview
Compaq Evo and Workstation Personal Computers
Featuring the Intel Pentium 4 Processor
Second Edition – January 2003
2-20
Table 2-9. Optical Drive Specifications
Table 2-9.
Optical Drive Specifications
Parameter 48x CD-ROM 16/10/40x CD-RW Drive
Interface Type IDE IDE
Media Type (reading)
Mode 1,2, Mixed Mode, CD-DA,
Photo CD, Cdi, CD-XA
Mode 1,2, Mixed Mode, CD-DA,
Photo CD, Cdi, CD-XA
Media Type (writing) N/a CD-R, CD-RW
Transfer Rate (Reads) 4.8 Kb/s (max sustained) CD-ROM, 4.8 Kb/s;
CD-ROM/CD-R, 1.5-6 Kb/s
Transfer Rate (Writes): N/a CD-R, 2.4 Kbps (sustained);
CD-RW, 1.5 Kbps (sustained);
Capacity:
Mode 1, 12 cm
Mode 2, 12 cm
8 cm
550 MB
640 MB
180 MB
650 MB @ 12 cm
Center Hole Diameter 15 mm 15 mm
Disc Diameter 8/12 cm 8/12 cm
Disc Thickness 1.2 mm 1.2 mm
Track Pitch 1.6 um 1.6 um
Laser
Beam Divergence
Output Power
Type
Wave Length
53.5
+/- 1.5 °
53.6
0.14 mW
GaAs
790 +/- 25 nm
53.5 + 1.5°
53.6 0.14 mW
GaAs
790 +/- 25 nm
Average Access Time:
Random
Full Stroke
<100 ms
<150 ms
<120 ms
<200 ms
Audio Output Level 0.7 Vrms 0.7 Vrms
Cache Buffer 128 KB 128 KB
Table 2-10. Hard Drive Specifications
Table 2-10.
Hard Drive Specifications
Parameter 20.0 GB 32.0 GB 40.0 GB 60.0 GB
Drive Size 3.5” 3.5" 3.5” 3.5”
Interface UATA/100 Ultra3 SCSI UATA/100 UATA/100
Transfer Rate 100 MBps 160 MBps 100 MBps 100 MBps
Drive Protection System Support? Yes Yes Yes Yes
Typical Seek Time (w/settling) [1]
Single Track
Average
Full Stroke
1.2 ms
8.0 ms
18 ms
0.6 ms
4.7 ms
12 ms
1.2 ms
8.0 ms
18 ms
1.0 ms
9.0 ms
20 ms
Disk Format (logical blocks) 39,102,336 71,132,000 78,165,360 78,165,360
Rotation Speed 7200 RPM 10,000 RPM 7200 RPM 7200 RPM
Drive Fault Prediction SMART III N/a SMART III SMART III
NOTE:
Actual times may vary depending on specific drive installed.
All ATA drives are Quiet Drives.