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We have already introduced to you Seagate’s new hard disk drive of the 2.5” form-factor that belongs to the Momentus family (see our Seagate Momentus HDD Review for details). The drive features high spindle rotation speed and low power consumption, comparable to devices with 4,200rpm speed.

So, we liked the drive very much, but wanted to know how it ranked among other “notebook” HDDs now available.

This is the matter we are going to look into today. Besides the Momentus drive from Seagate, we took six other 2.5” hard disks from three manufacturers. Such devices are actually multi-functional. First, they can be used according to their main purpose – in notebooks. Second, they are becoming popular as mobile storage devices, too. Third, there is a clear tendency to miniature hard disk drives in desktop systems. If the tendency proves strong, we may see the old 3.5” HDD being replaced by its smaller 2.5” counterpart. The main difference between the two is… the size, of course! The physical size of the platter determines the capacity of the drive and notebook drives are more restricted here. Otherwise, HDD models with the UltraATA interface have much in common. They offer the same maximum speed (7,200rpm). As for the cache-buffer size, some small drives may surpass bigger ones (16MB against 8MB). So, keeping all these things in mind, let’s start the testing.

Hard Disk Drives Specifications

 

Hitachi Travelstar 80GN (IC25N080ATMR04-0)

Fujitsu MHS2060AT

Seagate Momentus ST94811A

Toshiba MK4018GAS

Interface

ATA-6

ATA-6

Ultra ATA/100

ATA-5

Storage Capacity

80GB

60GB

40GB

40GB

Platters

2

2

1

2

Heads

4

4

2

4

Buffer size

8MB

2MB

8MB

2MB

Spindle rotation speed, rpm

4,200

4,200

5,400

4,200

Latency, ms

7.1

7.14

5.6

7.14

Interface data transfer rate, MB/s

100

100

100

100

Average seek time, ms

12

12

10

12

Power consumption during reading, W

2.1

2.3

2.87

2.3

Power consumption in idle state, W

0.65

0.65

1.2

0.9

Power consumption in sleep mode, W

0.1

0.1

No data

0.1

Operating Shock, (Gs) @ 2ms

200

225

225

190

Non Operating Shock, (Gs) @ 2ms

800

900

800

800

Dimensions, mm

9.5x70x100

9.5x70x100

9.5x70x100

9.5x70x100

Weight, g

99

99

99

98

Approximate price

$300

$190

New!

$120

 

Toshiba MK4019GAX

Toshiba MK6021GAS

Toshiba MK6022GAX

Interface

ATA-5

ATA-5

ATA-5

Storage Capacity

40GB

60GB

60GB

Platters

2

2

2

Heads

4

4

4

Buffer size

16MB

2MB

16MB

Spindle rotation speed, rpm

5,400

4,200

5,400

Latency, ms

5.55

7.14

5.56

Interface data transfer rate, MB/s

100

100

100

Average seek time, ms

12

12

10

Power consumption during reading, W

2.5

2.3

2.5

Power consumption in idle state, W

1.05

0.9

1.05

Power consumption in sleep mode, W

0.1

0.1

0.1

Operating Shock, (Gs) @ 2ms

200

200

200

Non Operating Shock, (Gs) @ 2ms

800

800

800

Dimensions, mm

9.5x70x100

9.5x70x100

9.5x70x100

Weight, g

102

98

101

Approximate price

$150

$190

$230

 
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