Seek Time
Seek Time
Seek Time
Seek Time (typical reads,
includes controller
overhead, including
settling)
Single Track
Single Track
Single Track
Single Track
2.0 ms
Average
Average
Average
Average
12 ms
Full-Stroke
Full-Stroke
Full-Stroke
Full-Stroke
22 ms
Rotational Speed
Rotational Speed
Rotational Speed
Rotational Speed
7,200 rpm
Logical Blocks
Logical Blocks
Logical Blocks
Logical Blocks
156,301,488
Operating Temperature
Operating Temperature
Operating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
3.5” 7200 RPM Serial
3.5” 7200 RPM Serial
3.5” 7200 RPM Serial
3.5” 7200 RPM Serial
ATA Hard Drives
ATA Hard Drives
ATA Hard Drives
ATA Hard Drives
500 GB
500 GB
500 GB
500 GB
Capacity
Capacity
Capacity
Capacity
500,107,862,016 bytes
Height
Height
Height
Height
1 in (2.54 cm)
Width
Width
Width
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface
Interface
Interface
Interface
Serial ATA (3.0 Gb/s)
Synchronous Transfer Rate
Synchronous Transfer Rate
Synchronous Transfer Rate
Synchronous Transfer Rate
(Maximum)
Up to 3 Gb/s
Buffer
Buffer
Buffer
Buffer
16 MB
Seek Time
Seek Time
Seek Time
Seek Time (typical reads,
includes controller
overhead, including
settling)
Single Track
Single Track
Single Track
Single Track
2.0 ms
Average
Average
Average
Average
11 ms
Full-Stroke
Full-Stroke
Full-Stroke
Full-Stroke
21 ms
Rotational Speed
Rotational Speed
Rotational Speed
Rotational Speed
7,200 RPM
Logical Blocks
Logical Blocks
Logical Blocks
Logical Blocks
976,773,168
Operating Temperature
Operating Temperature
Operating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
250 GB
250 GB
250 GB
250 GB
Capacity
Capacity
Capacity
Capacity
250,059,350,016 bytes
Height
Height
Height
Height
1 in (2.54 cm)
Width
Width
Width
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface
Interface
Interface
Interface
Serial ATA (3.0 Gb/s)
Synchronous Transfer Rate
Synchronous Transfer Rate
Synchronous Transfer Rate
Synchronous Transfer Rate
(Maximum)
Up to 3 Gb/s
Buffer
Buffer
Buffer
Buffer
8 MB
Seek Time
Seek Time
Seek Time
Seek Time (typical reads,
includes controller
overhead, including
settling)
Single Track
Single Track
Single Track
Single Track
1.0 ms
Average
Average
Average
Average
8.5 ms
Full-Stroke
Full-Stroke
Full-Stroke
Full-Stroke
18 ms
Rotational Speed
Rotational Speed
Rotational Speed
Rotational Speed
7,200 RPM
Logical Blocks
Logical Blocks
Logical Blocks
Logical Blocks
488,397,168
Operating Temperature
Operating Temperature
Operating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
160 GB
160 GB
160 GB
160 GB
Capacity
Capacity
Capacity
Capacity
160,041,885,696 bytes
Height
Height
Height
Height
1 in (2.54 cm)
Width
Width
Width
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
QuickSpecs
HP Compaq dc7900 Business PC
HP Compaq dc7900 Business PC
HP Compaq dc7900 Business PC
HP Compaq dc7900 Business PC
Technical Specifications - Hard Drives
DA - 13029 North America — Version 11 — February 9, 2009
Page 38