Product comparison · 2 internal hard drives

Seagate 640GB 2.5 vs Seagate Barracuda ST4000LM024 internal hard drive

19specifications compared
10differ
9identical
17known for one product only

Key differences

HDD capacity
- 640GB 2.5:640 GB
- Barracuda ST4000LM024 internal hard drive:4 TB
Interface
- 640GB 2.5:Serial ATA II
- Barracuda ST4000LM024 internal hard drive:Serial ATA III
Storage drive buffer size
- 640GB 2.5:8 MB
- Barracuda ST4000LM024 internal hard drive:128 MB
Average latency
- 640GB 2.5:5.5 ms
- Barracuda ST4000LM024 internal hard drive:5.6 ms
Bytes per sector
- 640GB 2.5:512
- Barracuda ST4000LM024 internal hard drive:4096
Power consumption (idle)
- 640GB 2.5:0.68 W
- Barracuda ST4000LM024 internal hard drive:1.1 W
Operating shock
- 640GB 2.5:350 G
- Barracuda ST4000LM024 internal hard drive:300 G
Non-operating shock
- 640GB 2.5:800 G
- Barracuda ST4000LM024 internal hard drive:650 G

Side by side

Differences highlightedShow differences only

Comparison of 640GB 2.5, ST4000LM024
36 specifications	A Seagate 640GB 2.5 View product	B Seagate Barracuda ST4000LM024 internal hard drive Model ST4000LM024 View product
Features5 differ
HDD capacityDiffers	640 GB	4 TB
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA III
Type	HDD	HDD
Component for	Laptop	Laptop
Storage drive buffer sizeDiffers	8 MB	128 MB
HDD number of headsKnown for one	Unknown — not stated by the source	10
Average seek timeKnown for one	Unknown — not stated by the source	14 ms
Average latencyDiffers	5.5 ms	5.6 ms
Bytes per sectorDiffers	512	4096
HDD interface transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Read seek timeKnown for one	11 ms	Unknown — not stated by the source
Power1 differ
Power consumption (idle)Differs	0.68 W	1.1 W
Power consumption (read)Known for one	Unknown — not stated by the source	1.9 W
Power consumption (write)Known for one	Unknown — not stated by the source	2.1 W
Operating voltage	5 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	1.2 A
Operational conditions2 differ
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °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	0.7 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3.52 G
Operating shockDiffers	350 G	300 G
Non-operating shockDiffers	800 G	650 G
Packaging contentidentical
Storage drive adapter includedKnown for one	Unknown — not stated by the source	No
Weight & dimensions2 differ
Width	69.8 mm	69.8 mm
Depth	100.3 mm	100.3 mm
HeightDiffers	9.5 mm	15 mm
WeightDiffers	100 g	190 g
Logistics dataidentical
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	84717050
Other featuresidentical
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
Product colourKnown for one	Black	Unknown — not stated by the source
InternalKnown for one	Yes	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	26 dB	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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