Product comparison · 2 internal hard drives

Seagate 146.3GB 3.5 vs Seagate ST91000640SS-40PK internal hard drive

22specifications compared
19differ
3identical
7known for one product only

Key differences

HDD capacity
- 146.3GB 3.5:146.3 GB
- ST91000640SS-40PK internal hard drive:1 TB
HDD speed
- 146.3GB 3.5:15000 RPM
- ST91000640SS-40PK internal hard drive:7200 RPM
HDD size
- 146.3GB 3.5:3.5"
- ST91000640SS-40PK internal hard drive:2.5"
Storage drive buffer size
- 146.3GB 3.5:16 MB
- ST91000640SS-40PK internal hard drive:64 MB
Read seek time
- 146.3GB 3.5:3.4 ms
- ST91000640SS-40PK internal hard drive:8.5 ms
Write seek time
- 146.3GB 3.5:3.9 ms
- ST91000640SS-40PK internal hard drive:9.5 ms
Average latency
- 146.3GB 3.5:2 ms
- ST91000640SS-40PK internal hard drive:4.16 ms
Power consumption (typical)
- 146.3GB 3.5:14.4 W
- ST91000640SS-40PK internal hard drive:6.4 W

Side by side

Differences highlightedShow differences only

Comparison of 146.3GB 3.5, ST91000640SS-40PK
29 specifications	A Seagate 146.3GB 3.5 View product	B Seagate ST91000640SS-40PK internal hard drive Model ST91000640SS-40PK View product
Features7 differ
HDD capacityDiffers	146.3 GB	1 TB
HDD speedDiffers	15000 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	SAS	SAS
Type	HDD	HDD
Component for	Server/workstation	Server/workstation
Storage drive buffer sizeDiffers	16 MB	64 MB
HDD interface transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Read seek timeDiffers	3.4 ms	8.5 ms
Write seek timeDiffers	3.9 ms	9.5 ms
Average latencyDiffers	2 ms	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
HDD number of headsKnown for one	3	Unknown — not stated by the source
Power3 differ
Power consumption (typical)Differs	14.4 W	6.4 W
Power consumption (idle)Differs	9.6 W	3.85 W
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions5 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Operating vibrationDiffers	1 G	0.5 G
Non-operating vibrationDiffers	2 G	3 G
Operating shockDiffers	60 G	70 G
Non-operating shockDiffers	250 G	400 G
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	101.6 mm	70.1 mm
DepthDiffers	146.1 mm	100.5 mm
HeightDiffers	25.4 mm	15 mm
WeightDiffers	674 g	200 g
Packaging dataidentical
Quantity per packKnown for one	Unknown — not stated by the source	40 pc(s)
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84717050	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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