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
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
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
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
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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