Product comparison · 2 internal hard drives

Seagate 4TB HDD SATA vs Seagate 4TB SATA III 3.5"

Key differences

Interface
- 4TB HDD SATA:Serial ATA
- 4TB SATA III 3.5":Serial ATA III
Depth
- 4TB HDD SATA:147 mm
- 4TB SATA III 3.5":146.1 mm
Height
- 4TB HDD SATA:26.1 mm
- 4TB SATA III 3.5":12.7 mm
Weight
- 4TB HDD SATA:610 g
- 4TB SATA III 3.5":408 g
Product colour
- 4TB HDD SATA:Black, Stainless steel
- 4TB SATA III 3.5":Stainless steel

Differences highlightedShow differences only

Comparison of 4TB HDD SATA, 4TB SATA III 3.5"
29 specifications	A Seagate 4TB HDD SATA View product	B Seagate 4TB SATA III 3.5"View product
Features1 differ
HDD capacity	4 TB	4 TB
HDD speed	5900 RPM	5900 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA	Serial ATA III
Storage drive buffer size	64 MB	64 MB
Write speed	146 MB/s	146 MB/s
Read speed	180 MB/s	180 MB/s
HDD number of heads	8	8
Read seek time	9.5 ms	9.5 ms
Write seek time	8.5 ms	8.5 ms
Bytes per sectorKnown for one	4096	Unknown — not stated by the source
Start/stop cyclesKnown for one	300000	Unknown — not stated by the source
TypeKnown for one	Unknown — not stated by the source	HDD
Average latencyKnown for one	Unknown — not stated by the source	5.1 ms
Poweridentical
Power consumption (typical)	7.5 W	7.5 W
Power consumption (standby)	0.75 W	0.75 W
Power consumption (PowerSave)	0.75 W	0.75 W
Power consumption (idle)Known for one	5 W	Unknown — not stated by the source
Operating voltage	5 / 12 V	5 / 12 V
Start-up current	2 A	2 A
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating shock	80 G	80 G
Non-operating shock	300 G	300 G
Weight & dimensions3 differ
Width	101.6 mm	101.6 mm
DepthDiffers	147 mm	146.1 mm
HeightDiffers	26.1 mm	12.7 mm
WeightDiffers	610 g	408 g
Other features1 differ
Product colourDiffers	Black, Stainless steel	Stainless steel

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.