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Western Digital Caviar SE 2500JS HDD - SATA vs. SATA-II

By: Cameron Johnson | HDDs in Storage | Posted: Oct 3, 2005 4:00 am
TweakTown Rating: 8.0%Manufacturer: Western Digital

Specifications of the Western Digital Caviar SE

 

Let's take a quick look at the drive specifications before taking a closer look at the drive.

 

Performance Specifications

 

Rotational Speed: 7,200 RPM (nominal)

 

Buffer Size: 8 MB

 

Average Latency: 4.20 ms (nominal)

 

Seek Times

 

Read Seek Time: 8.9 ms

 

Track-To-Track Seek Time: 2.0 ms (average)

 

Full Stroke Seek: 21.0 ms (average)

 

Transfer Rates

 

Buffer To Host (Serial ATA): 300 MB/s (Max)

 

Buffer To Disk: 748 Mbits/s (Max)

 

Physical Specifications

 

Formatted Capacity: 250,059 MB

 

Capacity: 250 GB

 

Interface: SATA 300 MB/s

 

Bytes Per Sector: 512

 

User Sectors Per Drive: 488,397,168

 

Servo Type: Embedded

 

Physical Dimensions

 

Height: 26.1 mm (Max)

 

Length: 147 mm (Max)

 

Width: 101.6 mm

 

Weight: 0.6 kg (+/- .082 kg)

 

Pretty standard specifications except for the 300MB/s transfer speeds but will it make a difference in the real-world?

 

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