Product comparison · 2 internal hard drives

Seagate 320GB 2.5" SATA II vs Seagate Momentus 7200.3 320GB

26specifications compared
8differ
18identical
12known for one product only

Key differences

HDD speed
- 320GB 2.5" SATA II:5400 RPM
- Momentus 7200.3 320GB:7200 RPM
Interface
- 320GB 2.5" SATA II:Serial ATA II
- Momentus 7200.3 320GB:Serial ATA
Storage drive buffer size
- 320GB 2.5" SATA II:8 MB
- Momentus 7200.3 320GB:16 MB
Average latency
- 320GB 2.5" SATA II:5.56 ms
- Momentus 7200.3 320GB:4.17 ms
Power consumption (standby)
- 320GB 2.5" SATA II:0.205 W
- Momentus 7200.3 320GB:0.21 W
Power consumption (idle)
- 320GB 2.5" SATA II:0.685 W
- Momentus 7200.3 320GB:0.75 W
Power consumption (read)
- 320GB 2.5" SATA II:1.6 W
- Momentus 7200.3 320GB:2.1 W
Power consumption (write)
- 320GB 2.5" SATA II:1.6 W
- Momentus 7200.3 320GB:2.1 W

Side by side

Differences highlightedShow differences only

Comparison of 320GB 2.5" SATA II, Momentus 7200.3 320GB
38 specifications	A Seagate 320GB 2.5" SATA II View product	B Seagate Momentus 7200.3 320GB View product
Features4 differ
HDD capacity	320 GB	320 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA
Type	HDD	HDD
Component for	Laptop	Laptop
Storage drive buffer sizeDiffers	8 MB	16 MB
HDD number of heads	4	4
Read seek timeKnown for one	Unknown — not stated by the source	11 ms
Write seek timeKnown for one	Unknown — not stated by the source	13 ms
Average latencyDiffers	5.56 ms	4.17 ms
Bytes per sector	512	512
Start/stop cycles	600000	600000
Mean time between failures (MTBF)	500000 h	500000 h
Power4 differ
Power consumption (standby)Differs	0.205 W	0.21 W
Power consumption (idle)Differs	0.685 W	0.75 W
Power consumption (read)Differs	1.6 W	2.1 W
Power consumption (write)Differs	1.6 W	2.1 W
Operating voltage	5 V	5 V
Start-up current	1 A	1 A
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating shock	350 G	350 G
Non-operating shock	1000 G	1000 G
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	-304.8 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-304.8 - 3048 m	Unknown — not stated by the source
Weight & dimensionsidentical
Width	69.8 mm	69.8 mm
Depth	100.5 mm	100.5 mm
Height	9.5 mm	9.5 mm
Weight	110 g	110 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Disks included quantityKnown for one	Unknown — not stated by the source	2 pc(s)
Drive device, transfer rateKnown for one	Unknown — not stated by the source	80 MB/s
InternalKnown for one	Unknown — not stated by the source	Yes
Maximum data transfer rateKnown for one	Unknown — not stated by the source	300 Mbit/s
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	2.3 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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