Product comparison · 2 internal hard drives

Seagate 1.2TB SAS vs Seagate 1.5TB 2.5"

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

Key differences

HDD capacity
- 1.2TB SAS:1.2 TB
- 1.5TB 2.5":1.5 TB
HDD speed
- 1.2TB SAS:10000 RPM
- 1.5TB 2.5":5400 RPM
Interface
- 1.2TB SAS:SAS
- 1.5TB 2.5":Serial ATA III
Type
- 1.2TB SAS:Hybrid-HDD
- 1.5TB 2.5":HDD
HDD interface transfer rate
- 1.2TB SAS:12 Gbit/s
- 1.5TB 2.5":6 Gbit/s
Average latency
- 1.2TB SAS:2.9 ms
- 1.5TB 2.5":5.6 ms
Power consumption (idle)
- 1.2TB SAS:4.26 W
- 1.5TB 2.5":0.7 W
Operating temperature (T-T)
- 1.2TB SAS:5 - 55 °C
- 1.5TB 2.5":0 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of 1.2TB SAS, 1.5TB 2.5"
37 specifications	A Seagate 1.2TB SAS View product	B Seagate 1.5TB 2.5"View product
Features6 differ
HDD capacityDiffers	1.2 TB	1.5 TB
HDD speedDiffers	10000 RPM	5400 RPM
InterfaceDiffers	SAS	Serial ATA III
TypeDiffers	Hybrid-HDD	HDD
Component forKnown for one	Unknown — not stated by the source	Laptop
HDD interface transfer rateDiffers	12 Gbit/s	6 Gbit/s
Average seek timeKnown for one	Unknown — not stated by the source	12 ms
Average latencyDiffers	2.9 ms	5.6 ms
SMART technologyKnown for one	Unknown — not stated by the source	Yes
Storage drive buffer sizeKnown for one	128 MB	Unknown — not stated by the source
Hybrid-HDD cache memoryKnown for one	32 GB	Unknown — not stated by the source
HDD sustained transfer rateKnown for one	241 MiB/s	Unknown — not stated by the source
HDD number of headsKnown for one	6	Unknown — not stated by the source
Power1 differ
Power consumption (standby)Known for one	Unknown — not stated by the source	0.18 W
Power consumption (idle)Differs	4.26 W	0.7 W
Power consumption (read)Known for one	Unknown — not stated by the source	2.3 W
Power consumption (write)Known for one	Unknown — not stated by the source	2.3 W
Start-up currentKnown for one	Unknown — not stated by the source	1 A
Power consumption (typical)Known for one	7.25 W	Unknown — not stated by the source
Operational conditions4 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °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%
Operating vibrationDiffers	0.5 G	1.5 G
Operating altitudeKnown for one	Unknown — not stated by the source	-304.8 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-304.8 - 12192 m
Operating shockDiffers	40 G	300 G
Non-operating shockDiffers	400 G	900 G
Non-operating vibrationKnown for one	3 G	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	70.1 mm	69.8 mm
DepthDiffers	15 mm	100.3 mm
HeightDiffers	100.5 mm	9.5 mm
WeightDiffers	193 g	130 g
Other featuresidentical
Drive ready timeKnown for one	Unknown — not stated by the source	0.35 s

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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