Product comparison · 2 internal hard drives

Seagate 1.5TB 2.5" vs Seagate 1.8TB SAS

19specifications compared
15differ
4identical
18known for one product only

Key differences

HDD capacity
- 1.5TB 2.5":1.5 TB
- 1.8TB SAS:1.8 TB
HDD speed
- 1.5TB 2.5":5400 RPM
- 1.8TB SAS:10000 RPM
Interface
- 1.5TB 2.5":Serial ATA III
- 1.8TB SAS:SAS
Type
- 1.5TB 2.5":HDD
- 1.8TB SAS:Hybrid-HDD
HDD interface transfer rate
- 1.5TB 2.5":6 Gbit/s
- 1.8TB SAS:12 Gbit/s
Average latency
- 1.5TB 2.5":5.6 ms
- 1.8TB SAS:2.9 ms
Power consumption (idle)
- 1.5TB 2.5":0.7 W
- 1.8TB SAS:4.55 W
Operating temperature (T-T)
- 1.5TB 2.5":0 - 60 °C
- 1.8TB SAS:5 - 55 °C

Side by side

Differences highlightedShow differences only

Comparison of 1.5TB 2.5", 1.8TB SAS
37 specifications	A Seagate 1.5TB 2.5"View product	B Seagate 1.8TB SAS View product
Features6 differ
HDD capacityDiffers	1.5 TB	1.8 TB
HDD speedDiffers	5400 RPM	10000 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA III	SAS
TypeDiffers	HDD	Hybrid-HDD
Component forKnown for one	Laptop	Unknown — not stated by the source
HDD interface transfer rateDiffers	6 Gbit/s	12 Gbit/s
Average seek timeKnown for one	12 ms	Unknown — not stated by the source
Average latencyDiffers	5.6 ms	2.9 ms
SMART technologyKnown for one	Yes	Unknown — not stated by the source
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	128 MB
Hybrid-HDD cache memoryKnown for one	Unknown — not stated by the source	32 GB
HDD sustained transfer rateKnown for one	Unknown — not stated by the source	241 MiB/s
HDD number of headsKnown for one	Unknown — not stated by the source	8
Power1 differ
Power consumption (standby)Known for one	0.18 W	Unknown — not stated by the source
Power consumption (idle)Differs	0.7 W	4.55 W
Power consumption (read)Known for one	2.3 W	Unknown — not stated by the source
Power consumption (write)Known for one	2.3 W	Unknown — not stated by the source
Operating voltage	5 V	5 V
Start-up currentKnown for one	1 A	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	7.8 W
Operational conditions4 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating vibrationDiffers	1.5 G	0.5 G
Operating altitudeKnown for one	-304.8 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-304.8 - 12192 m	Unknown — not stated by the source
Operating shockDiffers	300 G	40 G
Non-operating shockDiffers	900 G	400 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Weight & dimensions4 differ
WidthDiffers	69.8 mm	70.1 mm
DepthDiffers	100.3 mm	15 mm
HeightDiffers	9.5 mm	100.5 mm
WeightDiffers	130 g	199 g
Packaging dataidentical
Quantity per pack	1 pc(s)	1 pc(s)
Other featuresidentical
Drive ready timeKnown for one	0.35 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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