Product comparison · 2 internal hard drives

Seagate Barracuda 16TB vs Seagate Constellation ST91000642SS-RF internal hard drive

15specifications compared
11differ
4identical
25known for one product only

Key differences

The Seagate Barracuda 16TB has 15 TB more HDD capacity than the Seagate Constellation ST91000642SS-RF internal hard drive (16 TB vs 1 TB). The Seagate Barracuda 16TB has 1" more HDD size than the Seagate Constellation ST91000642SS-RF internal hard drive (3.5" vs 2.5"). The Seagate Barracuda 16TB has 448 MB more storage drive buffer size than the Seagate Constellation ST91000642SS-RF internal hard drive (512 MB vs 64 MB). Interface: Serial ATA on the Seagate Barracuda 16TB, SAS on the Seagate Constellation ST91000642SS-RF internal hard drive. Operating voltage: 5 / 12 V on the Seagate Barracuda 16TB, 5 V on the Seagate Constellation ST91000642SS-RF internal hard drive.

HDD capacity
- Barracuda 16TB:16 TB
- Constellation ST91000642SS-RF internal hard drive:1 TB
HDD size
- Barracuda 16TB:3.5"
- Constellation ST91000642SS-RF internal hard drive:2.5"
Interface
- Barracuda 16TB:Serial ATA
- Constellation ST91000642SS-RF internal hard drive:SAS
Storage drive buffer size
- Barracuda 16TB:512 MB
- Constellation ST91000642SS-RF internal hard drive:64 MB
Power consumption (typical)
- Barracuda 16TB:8.9 W
- Constellation ST91000642SS-RF internal hard drive:6.35 W
Operating voltage
- Barracuda 16TB:5 / 12 V
- Constellation ST91000642SS-RF internal hard drive:5 V
Operating temperature (T-T)
- Barracuda 16TB:10 - 60 °C
- Constellation ST91000642SS-RF internal hard drive:5 - 60 °C
Width
- Barracuda 16TB:101.8 mm
- Constellation ST91000642SS-RF internal hard drive:69.8 mm

Side by side

Differences highlightedShow differences only

Comparison of Barracuda 16TB, ST91000642SS-RF
40 specifications	A Seagate Barracuda 16TB View product	B Seagate Constellation ST91000642SS-RF internal hard drive Model ST91000642SS-RF View product
Features4 differ
HDD capacityDiffers	16 TB	1 TB
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA	SAS
Storage drive buffer sizeDiffers	512 MB	64 MB
HDD number of headsKnown for one	Unknown — not stated by the source	8
Read seek timeKnown for one	Unknown — not stated by the source	7.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
RefurbishedKnown for one	Unknown — not stated by the source	Yes
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
Component forKnown for one	PC	Unknown — not stated by the source
HDD interface transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
HDD sustained transfer rateKnown for one	190 MiB/s	Unknown — not stated by the source
Power2 differ
Power consumption (typical)Differs	8.9 W	6.35 W
Operating voltageDiffers	5 / 12 V	5 V
Power consumption (idle)Known for one	6.7 W	Unknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)Differs	10 - 60 °C	5 - 60 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m
Operating shockKnown for one	Unknown — not stated by the source	70 G
Non-operating shockKnown for one	Unknown — not stated by the source	400 G
Weight & dimensions4 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100 mm
HeightDiffers	26.1 mm	15 mm
WeightDiffers	695 g	200 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	4.69 Gbit/s
InternalKnown for one	Unknown — not stated by the source	Yes
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Packaging contentidentical
Storage drive adapter includedKnown for one	No	Unknown — not stated by the source
Packaging dataidentical
Quantity per packKnown for one	1 pc(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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