Product comparison · 2 internal hard drives

Seagate 2000GB HDD vs Seagate 640GB 2.5" SATA

17specifications compared
14differ
3identical
16known for one product only

Key differences

HDD capacity
- 2000GB HDD:2 TB
- 640GB 2.5" SATA:640 GB
HDD speed
- 2000GB HDD:7200 RPM
- 640GB 2.5" SATA:5400 RPM
Storage drive buffer size
- 2000GB HDD:64 MB
- 640GB 2.5" SATA:8 MB
Read seek time
- 2000GB HDD:8.5 ms
- 640GB 2.5" SATA:11 ms
Average latency
- 2000GB HDD:4.16 ms
- 640GB 2.5" SATA:5.5 ms
Power consumption (idle)
- 2000GB HDD:6.39 W
- 640GB 2.5" SATA:0.68 W
Operating voltage
- 2000GB HDD:5 / 12 V
- 640GB 2.5" SATA:5 V
Operating temperature (T-T)
- 2000GB HDD:5 - 60 °C
- 640GB 2.5" SATA:0 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of 2000GB HDD, 640GB 2.5" SATA
33 specifications	A Seagate 2000GB HDD View product	B Seagate 640GB 2.5" SATA View product
Features5 differ
HDD capacityDiffers	2 TB	640 GB
HDD speedDiffers	7200 RPM	5400 RPM
Interface	Serial ATA II	Serial ATA II
Type	HDD	HDD
Storage drive buffer sizeDiffers	64 MB	8 MB
HDD sustained transfer rateKnown for one	140 MiB/s	Unknown — not stated by the source
Read seek timeDiffers	8.5 ms	11 ms
Write seek timeKnown for one	9.5 ms	Unknown — not stated by the source
Average latencyDiffers	4.16 ms	5.5 ms
Bytes per sector	512	512
Mean time between failures (MTBF)Known for one	1200000 h	Unknown — not stated by the source
HDD sizeKnown for one	Unknown — not stated by the source	2.5"
Component forKnown for one	Unknown — not stated by the source	Laptop
HDD interface transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Power2 differ
Power consumption (idle)Differs	6.39 W	0.68 W
Power consumption (read)Known for one	9.03 W	Unknown — not stated by the source
Power consumption (write)Known for one	7.8 W	Unknown — not stated by the source
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions3 differ
Operating temperature (T-T)Differs	5 - 60 °C	0 - 60 °C
Operating vibrationKnown for one	0.25 G	Unknown — not stated by the source
Non-operating vibrationKnown for one	4.9 G	Unknown — not stated by the source
Operating shockDiffers	70 G	350 G
Non-operating shockDiffers	300 G	800 G
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Weight & dimensions4 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100.3 mm
HeightDiffers	26.1 mm	9.5 mm
WeightDiffers	710 g	100 g
Packaging dataidentical
Quantity per packKnown for one	1 pc(s)	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	84717050
Other featuresidentical
Product colourKnown for one	Unknown — not stated by the source	Black
InternalKnown for one	Unknown — not stated by the source	Yes
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	26 dB

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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