Product comparison · 2 internal hard drives

Seagate 20GB LD25 vs Seagate LD25.2 40GB

21specifications compared
10differ
11identical
11known for one product only

Key differences

HDD capacity
- 20GB LD25:20 GB
- LD25.2 40GB:40 GB
Interface
- 20GB LD25:Ultra-ATA/100
- LD25.2 40GB:Serial ATA
Read seek time
- 20GB LD25:16 ms
- LD25.2 40GB:14 ms
Write seek time
- 20GB LD25:16 ms
- LD25.2 40GB:15 ms
Start-up current
- 20GB LD25:1 A
- LD25.2 40GB:1.1 A
Operating temperature (T-T)
- 20GB LD25:5 - 55 °C
- LD25.2 40GB:0 - 60 °C
Operating shock
- 20GB LD25:100 G
- LD25.2 40GB:175 G
Width
- 20GB LD25:69.8 mm
- LD25.2 40GB:70.1 mm

Side by side

Differences highlightedShow differences only

Comparison of 20GB LD25, LD25.2 40GB
32 specifications	A Seagate 20GB LD25 View product	B Seagate LD25.2 40GB View product
Features4 differ
HDD capacityDiffers	20 GB	40 GB
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA
Storage drive buffer size	2 MB	2 MB
Read seek timeDiffers	16 ms	14 ms
Write seek timeDiffers	16 ms	15 ms
Average latency	5.6 ms	5.6 ms
HDD number of headsKnown for one	Unknown — not stated by the source	1
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Power1 differ
Operating voltage	5 V	5 V
Start-up currentDiffers	1 A	1.1 A
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating shockDiffers	100 G	175 G
Non-operating shock	500 G	500 G
Weight & dimensions2 differ
WidthDiffers	69.8 mm	70.1 mm
Depth	100.5 mm	100.5 mm
HeightDiffers	9.5 mm	9.7 mm
Weight	100 g	100 g
Other features1 differ
Ethernet LANKnown for one	No	Unknown — not stated by the source
Fibre ChannelKnown for one	No	Unknown — not stated by the source
FireWire 400Known for one	No	Unknown — not stated by the source
FireWire 800Known for one	No	Unknown — not stated by the source
Internal	Yes	Yes
USB 2.0 ports quantityKnown for one	0	Unknown — not stated by the source
USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one	0	Unknown — not stated by the source
USB poweredKnown for one	No	Unknown — not stated by the source
Dimensions (W x D x H) (imperial)Differs	69.8 x 100.5 x 9.5 mm (2.75 x 3.96 x 0.374")	70.1 x 100.5 x 9.7 mm (2.76 x 3.96 x 0.382")
Weight (imperial)	0.0998 kg (0.22 lbs)	0.0998 kg (0.22 lbs)
Data transfer rateKnown for one	Unknown — not stated by the source	1.5 Gbit/s
Disks included quantityKnown for one	Unknown — not stated by the source	1 pc(s)

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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