Western Digital Caviar Blue WD1600AAJB, Caviar Blue WD2500AAJB, Caviar Blue WD1600AABS, Caviar Blue WD1600AAJS, Caviar Blue WD2500AAJS Specifications

WD Caviar® Blue

Desktop Hard Drives

Performance and

reliability for

everyday computing

™

WD Caviar Blue

SATA or EIDE

Width/Height

3.5-inch/1-inch

Rotational Speed

7200 RPM

Capacities

40 to 750 GB

Model Numbers

SATA Drives

WD7500AAKS
WD6400AAKS
WD5000AAKS

WD5000AAJS

WD4000AAKS

WD4000AAJS

WD3200AAKS

WD3200AAJS

WD2500AAKS

WD2500AAJS
WD1600AAJS

WD1600AABS

WD1200AAJS

WD800JD

WD800BD

WD400JD

Note: Not all products may
be available in all regions of
the world.

EIDE Drives

WD5000AAKB

WD5000AAJB

WD4000AAKB

WD4000AAJB

WD3200AAKB

WD3200AAJB
WD2500AAJB
WD1600AAJB

WD1600AABB

Interface

WD800JB
WD800BB
WD400BB

To make drive selection simple, we’ve gathered all our popular
WD Caviar SE16, WD Caviar SE, and WD Caviar drives under one
umbrella we call WD Caviar Blue. Built to Western Digital’s award winning
quality standards, these drives are available in a full range of performance
features.

Product Features

Cache — WD Caviar Blue is available in 2 MB, 8 MB, and 16 MB cache sizes.

Bigger cache memory yields faster performance.

Capacity — We offer drives ranging from 40 GB to 750 GB. Pick the biggest
capacity your budget will allow. You can never have too much storage space.

Reliability — We understand the importance of your data, and we are committed to
protecting that data with exceptionally reliable products, advanced data protection
technology and superior customer support.

Cool — Keeping the drive cool enhances reliability. WD continues to develop new
and innovative ways to keep drives cool while they are operating.

Quiet — The technology that Tom's Hardware Guide called "very fast and nearly
silent" is used throughout this family of drives. Our WhisperDrive™ technology
minimizes noise to levels near the threshold of human hearing. To cut seek noise,
SoftSeek™ technology streamlines read/write seeking algorithms, resulting in more
efficient operation.

Compatible — We perform tests on hundreds of systems and a multitude of
platforms in our FIT Lab™ and Mobile Compatibility Lab to give our customers
confidence that our drives will work in their systems.

WD Caviar Blue is part of WD's complete lineup of desktop hard drives.

WD Caviar Blue

Desktop Hard Drives

Drive Specifications

SATA Hard Drives 250 GB 320 GB 400 GB 500 GB 640 GB 750 GB

Formatted capacity
User sectors per drive 488,397,168 625,142,448 781,422,768 976,773,168 1,250,263,728 1,465,149,168
SATA latching connector Yes Yes Yes Yes Yes Yes
WD model number WD2500AAKS WD3200AAKS WD4000AAKS WD5000AAKS WD6400AAKS WD7500AAKS

1

250,059 MB 320,072 MB 400,088 MB 500,107 MB 640,135 MB 750,156 MB

WD Caviar Blue

EIDE Hard Drives 320 GB 400 GB 500 GB

Formatted capacity

1

User sectors per drive

320,072 MB
625,142,448

400,088 MB 500,107 MB
781,422,768 976,773,168

WD model number WD3200AAKB WD4000AAKB WD5000AAKB

SATA Hard Drives

Actuator latch/auto park Yes
Bytes per sector (STD) 512
Form factor 3.5-inch
RoHS compliant

2

Yes

EIDE Hard Drives

Actuator type Rotary voice coil
Bytes per sector (STD) 512
Form factor 3.5-inch
RoHS compliant

Performance Specifications

SATA Hard Drives

Average latency 4.2 ms
Buffer 16 MB
Cache

Read Adaptive
Write Yes

Data transfer rate

Buffer to disk 70 MB/s sustained
Buffer to host 3 Gb/s (maximum)

Drive ready time 13 sec

3

Error rate (non-recoverable) <1 in 1015 bits read
LBA support Yes
Rotational speed 7200 RPM
Start/stop cycles

4

50,000

3

EIDE Hard Drives

Average latency 5.5 ms
Buffer 16 MB
Cache

Read Adaptive
Write Yes

Data transfer rate (buffer to host)

Mode 5 Ultra ATA
Mode 4 Ultra ATA
Mode 2 Ultra ATA
Mode 2 Ultra DMA

Mode 4 Ultra PIO
Drive ready time 7.0 sec (average)
Error rate (non-recoverable) <1 in 1015 bits read
LBA support Yes
Rotational speed 7200 RPM
Start/stop cycles

2

5

5

5

5

5

4

Yes

100 MB/s

66.6 MB/s

33.3 MB/s

16.6 MB/s

16.6 MB/s

50,000

1

One gigabyte (GB) = one billion bytes. One terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on

operating environment.

2

WD products manufactured and sold worldwide after August 1, 2005, meet or exceed Restriction of Hazardous Substances

(RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS
Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect
human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of
restrictions on lead, mercury, cadmium, and other substances.

3

For 750 GB.

4

Controlled unload at ambient condition.

5

Maximum burst rate running the specified PIO, DMA, or Ultra ATA transfer mode.

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