Product comparison · 2 internal hard drives

Seagate Capacity 3.5 HDD vs Seagate Momentus ST640LM020 internal hard drive

15specifications compared
13differ
2identical
22known for one product only

Key differences

HDD capacity
- Capacity 3.5 HDD:6 TB
- Momentus ST640LM020 internal hard drive:640 GB
HDD speed
- Capacity 3.5 HDD:7200 RPM
- Momentus ST640LM020 internal hard drive:5400 RPM
HDD size
- Capacity 3.5 HDD:3.5"
- Momentus ST640LM020 internal hard drive:2.5"
Interface
- Capacity 3.5 HDD:SAS
- Momentus ST640LM020 internal hard drive:Serial ATA II
Component for
- Capacity 3.5 HDD:Server/workstation
- Momentus ST640LM020 internal hard drive:Laptop
Average latency
- Capacity 3.5 HDD:4.16 ms
- Momentus ST640LM020 internal hard drive:5.6 ms
Power consumption (idle)
- Capacity 3.5 HDD:7.97 W
- Momentus ST640LM020 internal hard drive:0.7 W
Operating voltage
- Capacity 3.5 HDD:5 / 12 V
- Momentus ST640LM020 internal hard drive:5 V

Side by side

Differences highlightedShow differences only

Comparison of Capacity 3.5 HDD, ST640LM020
37 specifications	A Seagate Capacity 3.5 HDD View product	B Seagate Momentus ST640LM020 internal hard drive Model ST640LM020 View product
Features6 differ
HDD capacityDiffers	6 TB	640 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	SAS	Serial ATA II
Type	HDD	HDD
Component forDiffers	Server/workstation	Laptop
Access timeKnown for one	Unknown — not stated by the source	4 ms
Average seek timeKnown for one	Unknown — not stated by the source	12 ms
Average latencyDiffers	4.16 ms	5.6 ms
Storage drive buffer sizeKnown for one	128 MB	Unknown — not stated by the source
HDD interface transfer rateKnown for one	12 Gbit/s	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1400000 h	Unknown — not stated by the source
Power2 differ
Power consumption (standby)Known for one	Unknown — not stated by the source	0.2 W
Power consumption (idle)Differs	7.97 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
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	1 A
Power consumption (typical)Known for one	11.86 W	Unknown — not stated by the source
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 60 °C	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °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 vibrationKnown for one	Unknown — not stated by the source	1.5 G
Operating altitudeKnown for one	Unknown — not stated by the source	-300 - 3000 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-400 - 15000 m
Operating shockKnown for one	Unknown — not stated by the source	325 G
Non-operating shockDiffers	250 G	750 G
Non-operating vibrationKnown for one	4.9 G	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100.3 mm
HeightDiffers	26.1 mm	9.5 mm
WeightKnown for one	780 g	Unknown — not stated by the source
Packaging dataidentical
Quantity per pack	1 pc(s)	1 pc(s)
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Packaging contentidentical
Storage drive adapter includedKnown for one	No	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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