Product comparison · 2 internal hard drives

Seagate Constellation 500-GB SED vs Seagate Pipeline HD 1-TB

15specifications compared
13differ
2identical
15known for one product only

Key differences

HDD capacity
- Constellation 500-GB SED:500 GB
- Pipeline HD 1-TB:1 TB
HDD speed
- Constellation 500-GB SED:7200 RPM
- Pipeline HD 1-TB:5900 RPM
HDD size
- Constellation 500-GB SED:2.5"
- Pipeline HD 1-TB:3.5"
Storage drive buffer size
- Constellation 500-GB SED:16 MB
- Pipeline HD 1-TB:8 MB
Read seek time
- Constellation 500-GB SED:8.5 ms
- Pipeline HD 1-TB:14 ms
Write seek time
- Constellation 500-GB SED:9.5 ms
- Pipeline HD 1-TB:15 ms
Operating voltage
- Constellation 500-GB SED:5 V
- Pipeline HD 1-TB:5 / 12 V
Operating temperature (T-T)
- Constellation 500-GB SED:5 - 55 °C
- Pipeline HD 1-TB:0 - 75 °C

Side by side

Differences highlightedShow differences only

Comparison of Constellation 500-GB SED, Pipeline HD 1-TB
30 specifications	A Seagate Constellation 500-GB SED View product	B Seagate Pipeline HD 1-TB View product
Features6 differ
HDD capacityDiffers	500 GB	1 TB
HDD speedDiffers	7200 RPM	5900 RPM
HDD sizeDiffers	2.5"	3.5"
Storage drive buffer sizeDiffers	16 MB	8 MB
Read seek timeDiffers	8.5 ms	14 ms
Write seek timeDiffers	9.5 ms	15 ms
Track to track seek timeKnown for one	0.8 ms	Unknown — not stated by the source
Average latencyKnown for one	4.16 ms	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1200000 h	Unknown — not stated by the source
InterfaceKnown for one	Unknown — not stated by the source	Serial ATA II
TypeKnown for one	Unknown — not stated by the source	HDD
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Power consumption (standby)Known for one	Unknown — not stated by the source	0.7 W
Start-up currentKnown for one	Unknown — not stated by the source	2 A
Operational conditions1 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 75 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Weight & dimensions3 differ
WidthDiffers	70 mm	101.6 mm
DepthDiffers	100.5 mm	147 mm
HeightDiffers	14.8 mm	26.1 mm
WeightKnown for one	227 g	Unknown — not stated by the source
Other features2 differ
Power requirementsKnown for one	12V	Unknown — not stated by the source
Dimensions (WxDxH)Differs	70 x 100.5 x 14.8 mm	101.6 x 146.99 x 26.1 mm
Card reader integratedKnown for one	No	Unknown — not stated by the source
Data transfer rateDiffers	6 Gbit/s	3 Gbit/s
Internal	Yes	Yes
Sustained data rateKnown for one	0 MB/s	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.

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