Compaq Presario 1800 Presario 1800XL Series Maintenance and Service Guide - Page 21

Hard Drive, CD or DVD Drive, Specification, 6x DVD, CD-RW, 24x CD

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Presario 1800 Series Models: XL180, XL181, XL182, XL183, XL185, and XL190, XL191, XL192 Hard Drive Hard Drives Specification 6.0 GB 12.0 GB 18.0 GB Drive Type Ultra DMA 66.7 Ultra DMA 66.7 Ultra DMA 66.7 Cylinders Heads Sectors per Track Bytes per Sector Seek Times (typical) Read/Write (incl. settling) Single track Full stroke 15200 2 63 512 13 ms 3 ms 24 ms 15200 4 63 512 13 ms 3 ms 24 ms 15200 6 63 512 13 ms 3 ms 24 ms Transfer Rate at Interface Ultra DMA mode (max) 66.7 Mb/s PIO mode 16.6 Mb/s 66.7 Mb/s 16.6 Mb/s 66.7 Mb/s 16.6 Mb/s CD or DVD Drive CD or DVD Drive Specification 6x DVD 8x DVD CD-RW 24x CD Width Height Depth 128 mm 12.7 mm 129 mm 128 mm 12.7 mm 129 mm 128 mm 12.7 mm 129 mm 128 mm 12.7 mm 129 mm Weight 280 g 270 g 300 g

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P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1800 S
ERIES
S
PECIFICATIONS
7
Presario 1800 Series
Models: XL180, XL181, XL182, XL183, XL185,
and XL190, XL191, XL192
Hard Drive
CD or DVD Drive
Hard Drives
Specification
6.0 GB
12.0 GB
18.0 GB
Drive Type
Ultra DMA 66.7
Ultra DMA 66.7
Ultra DMA 66.7
Cylinders
Heads
Sectors per Track
Bytes per Sector
15200
2
63
512
15200
4
63
512
15200
6
63
512
Seek Times (typical)
Read/Write (incl. settling)
Single track
Full stroke
13 ms
3 ms
24 ms
13 ms
3 ms
24 ms
13 ms
3 ms
24 ms
Transfer Rate at Interface
Ultra DMA mode (max)
PIO mode
66.7 Mb/s
16.6 Mb/s
66.7 Mb/s
16.6 Mb/s
66.7 Mb/s
16.6 Mb/s
CD or DVD Drive
Specification
6x DVD
8x DVD
CD-RW
24x CD
Width
Height
Depth
128 mm
12.7 mm
129 mm
128 mm
12.7 mm
129 mm
128 mm
12.7 mm
129 mm
128 mm
12.7 mm
129 mm
Weight
280 g
270 g
300 g
<270 g
Rotational Speed Approx.
3450 rpm
2300 rpm
4200 rpm (CD)
4225 rpm
Sustained Data Transfer Rate
(typical)
8100 Kb/s
5400Kb/s
Reading:
3000 Kb/s (20x CD)
2100 Kb/s (14x CD-RW)
Writing:600 Kb/s (4x)
3600 Kb/s
Random Access Time (Avg.)
140 ms
140 ms
150 ms (Typ.)
120 ms
Spin Up Time
<15 s
3.8 s
<10 s
2.7 s
Data Buffer Capacity
512 Kb
128 Kb
2Mb
128 Kb