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Seek Time
Seek TimeSeek Time
Seek Time
Read
ReadRead
Read
(typical)
Track to Track
Track to TrackTrack to Track
Track to Track
1 ms
Average
AverageAverage
Average
13 ms
Full-Stroke
Full-StrokeFull-Stroke
Full-Stroke
22 ms
Average latency
Average latencyAverage latency
Average latency
4.2 ms
Rotational Speed
Rotational SpeedRotational Speed
Rotational Speed
7,200 RPM
Buffer
BufferBuffer
Buffer
(max)
4 sec
Operating Temperature
Operating TemperatureOperating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
7200 RPM Serial ATA
7200 RPM Serial ATA7200 RPM Serial ATA
7200 RPM Serial ATA
Hard Drives
Hard DrivesHard Drives
Hard Drives
500-GB
500-GB500-GB
500-GB
Capacity
CapacityCapacity
Capacity
500,107,862,016 bytes
Height
HeightHeight
Height
1 in (2.54 cm)
Width
WidthWidth
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface
InterfaceInterface
Interface
Serial ATA (3.0 Gb/s)
Synchronous Transfer
Synchronous TransferSynchronous Transfer
Synchronous Transfer
Rate
RateRate
Rate
(Maximum)
Up to 3 Gb/s
Buffer
BufferBuffer
Buffer
16 MB
Seek Time
Seek TimeSeek Time
Seek Time
(typical reads,
includes controller
overhead, including
settling)
Single Track
Single TrackSingle Track
Single Track
2.0 ms
Average
AverageAverage
Average
11 ms
Full-Stroke
Full-StrokeFull-Stroke
Full-Stroke
21 ms
Rotational Speed
Rotational SpeedRotational Speed
Rotational Speed
7,200 RPM
Logical Blocks
Logical BlocksLogical Blocks
Logical Blocks
976,773,168
Operating Temperature
Operating TemperatureOperating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
250-GB
250-GB250-GB
250-GB
Capacity
CapacityCapacity
Capacity
250,059,350,016 bytes
Height
HeightHeight
Height
1 in (2.54 cm)
Width
WidthWidth
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
Interface
InterfaceInterface
Interface
Serial ATA (3.0 Gb/s)
Synchronous Transfer
Synchronous TransferSynchronous Transfer
Synchronous Transfer
Rate
RateRate
Rate
(Maximum)
Up to 3 Gb/s
Buffer
BufferBuffer
Buffer
8 MB
Seek Time
Seek TimeSeek Time
Seek Time
(typical reads,
includes controller
overhead, including
settling)
Single Track
Single TrackSingle Track
Single Track
1.0 ms
Average
AverageAverage
Average
8.5 ms
Full-Stroke
Full-StrokeFull-Stroke
Full-Stroke
18 ms
Rotational Speed
Rotational SpeedRotational Speed
Rotational Speed
7,200 RPM
Logical Blocks
Logical BlocksLogical Blocks
Logical Blocks
488,397,168
Operating Temperature
Operating TemperatureOperating Temperature
Operating Temperature
41° to 131° F (5° to 55° C)
160-GB
160-GB160-GB
160-GB
Capacity
CapacityCapacity
Capacity
160,041,885,696 bytes
Height
HeightHeight
Height
1 in (2.54 cm)
Width
WidthWidth
Width
Media diameter: 3.5 in (8.89 cm)
Physical size: 4 in (10.2 cm)
QuickSpecs
HP Compaq dc7800 Business PC
HP Compaq dc7800 Business PCHP Compaq dc7800 Business PC
HP Compaq dc7800 Business PC
Technical Specifications - Hard Drives
DA - 12744 North America — Version 25 — May 16, 2008
Page 43