Product comparison · 2 internal hard drives

Seagate Constellation 7200 SATA II 500GB vs Seagate LD25.2 40GB

15specifications compared
14differ
1identical
12known for one product only

Key differences

HDD capacity
- Constellation 7200 SATA II 500GB:500 GB
- LD25.2 40GB:40 GB
HDD speed
- Constellation 7200 SATA II 500GB:7200 RPM
- LD25.2 40GB:5400 RPM
HDD size
- Constellation 7200 SATA II 500GB:3.5"
- LD25.2 40GB:2.5"
Interface
- Constellation 7200 SATA II 500GB:Serial ATA II
- LD25.2 40GB:Serial ATA
Storage drive buffer size
- Constellation 7200 SATA II 500GB:32 MB
- LD25.2 40GB:2 MB
Read seek time
- Constellation 7200 SATA II 500GB:8.5 ms
- LD25.2 40GB:14 ms
Write seek time
- Constellation 7200 SATA II 500GB:9.5 ms
- LD25.2 40GB:15 ms
Average latency
- Constellation 7200 SATA II 500GB:4.16 ms
- LD25.2 40GB:5.6 ms

Side by side

Differences highlightedShow differences only

Comparison of Constellation 7200 SATA II 500GB, LD25.2 40GB
27 specifications	A Seagate Constellation 7200 SATA II 500GB View product	B Seagate LD25.2 40GB View product
Features8 differ
HDD capacityDiffers	500 GB	40 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer sizeDiffers	32 MB	2 MB
HDD number of headsKnown for one	Unknown — not stated by the source	1
Read seek timeDiffers	8.5 ms	14 ms
Write seek timeDiffers	9.5 ms	15 ms
Average latencyDiffers	4.16 ms	5.6 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Mean time between failures (MTBF)Known for one	1200000 h	Unknown — not stated by the source
Power1 differ
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	1.1 A
Operational conditions1 differ
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating shockDiffers	80 G	175 G
Non-operating shockKnown for one	Unknown — not stated by the source	500 G
Weight & dimensions4 differ
WidthDiffers	101.6 mm	70.1 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	9.7 mm
WeightDiffers	610 g	100 g
Other featuresidentical
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)
Dimensions (W x D x H) (imperial)Known for one	Unknown — not stated by the source	70.1 x 100.5 x 9.7 mm (2.76 x 3.96 x 0.382")
Weight (imperial)Known for one	Unknown — not stated by the source	0.0998 kg (0.22 lbs)
Acoustic pressure emissionsKnown for one	1.9 dB	Unknown — not stated by the source

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.

More internal hard drive comparisons

All internal hard drive comparisons