Product comparison · 2 internal hard drives

Seagate 1.5TB SATA HDD vs Seagate 3TB SATA III 3.5"

Key differences

Differences highlightedShow differences only

Comparison of 1.5TB SATA HDD, 3TB SATA III 3.5"
25 specifications	A Seagate 1.5TB SATA HDD View product	B Seagate 3TB SATA III 3.5"View product
Features2 differ
HDD capacityDiffers	1.5 TB	3 TB
InterfaceDiffers	Serial ATA	Serial ATA III
HDD number of headsKnown for one	4	Unknown — not stated by the source
Bytes per sectorKnown for one	4096	Unknown — not stated by the source
Read seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	9.5 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Poweridentical
Power consumption (typical)Known for one	6.2 W	Unknown — not stated by the source
Power consumption (idle)Known for one	4.6 W	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 60 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	101 mm	101.6 mm
HeightDiffers	26 mm	26.1 mm
WeightDiffers	535 g	626 g
Other featuresidentical
Data transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
Depth (imperial)Known for one	Unknown — not stated by the source	14.7 cm (5.79")
Height (imperial)Known for one	Unknown — not stated by the source	2.61 cm (1.03")
Width (imperial)Known for one	Unknown — not stated by the source	10.2 cm (4")
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Yes

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.