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DVD/CD-RW Drive
Center Hole Diameter
15 mm
Disk Diameter
12 cm, 8 cm
Disk Thickness
1.2 mm
Track Pitch
1.6 µm
Access Times
(typical reads, including
settling)
Random CD
< 110 ms
Full-Stroke CD
< 210 ms
Random DVD
< 130 ms
Full-Stroke DVD
< 225 ms
Audio Output Level
0.7 – 0.9 Vrms
Cache Buffer
2 Mbytes (minimum)
Data Transfer Rate
(typical, including settling)
CD-R (24X)
3600 KB/s (150 KB/s at 1X CD rate)
CD-RW (10X)
1200 KB/s (150 KB/s at 1X CD rate)
CD-ROM (24X)
3600 KB/s (150 KB/s at 1X CD rate)
DVD (8X)
10,800 KB/s (1352 KB/s at 1X DVD rate)
Normal PIO Mode 4
(single burst)
16.6 MB/s
Start-up Time
Single
< 9 seconds (typical)
Multi-Session
< 30 seconds (typical)
Stop Time
< 6 seconds (typical)
DVD-ROM Drive
Center Hole Diameter
0.59 in (1.5 cm)
Disk Diameter
12 cm/8 cm
Disk Thickness
1.2 mm
Track Pitch
0.74 µm (DVD)/1.6 µm (CD)
Access Times
(typical reads, including
settling)
Random (typical)
< 125 ms DVD Media
Full-Stroke (typical)
< 225 ms DVD Media
Random (typical)
< 100 ms CD Media
Full-Stroke (typical)
< 175 ms CD Media
Cache Buffer
512 KB/s (minimum)
Data Transfer Rate
(typical, including settling)
Max 24X CD
3600 KB/s (150 KB/s at 1X CD rate)
Max 8X DVD
10,800 KB/s (1352 KB/s at 1X DVD rate)
Start-up Time
< 12 seconds Typical
Stop Time
< 3 seconds Typical
QuickSpecs
HP Compaq nx9000 Business Notebook
Technical Specifications
DA - 11598 Worldwide — Version 11 — December 8, 2004
Page 15