Product comparison · 2 internal hard drives

Seagate 80GB 3.5" SATA II vs Seagate Momentus 5400.2 40GB

12specifications compared
11differ
1identical
25known for one product only

Key differences

HDD capacity
- 80GB 3.5" SATA II:80 GB
- Momentus 5400.2 40GB:40 GB
HDD speed
- 80GB 3.5" SATA II:7200 RPM
- Momentus 5400.2 40GB:5400 RPM
Interface
- 80GB 3.5" SATA II:Serial ATA II
- Momentus 5400.2 40GB:Ultra-ATA/133
Storage drive buffer size
- 80GB 3.5" SATA II:2 MB
- Momentus 5400.2 40GB:8 MB
Average latency
- 80GB 3.5" SATA II:4.16 ms
- Momentus 5400.2 40GB:5.6 ms
Operating temperature (T-T)
- 80GB 3.5" SATA II:0 - 60 °C
- Momentus 5400.2 40GB:5 - 55 °C
Non-operating shock
- 80GB 3.5" SATA II:350 G
- Momentus 5400.2 40GB:900 G
Width
- 80GB 3.5" SATA II:101.6 mm
- Momentus 5400.2 40GB:69.8 mm

Side by side

Differences highlightedShow differences only

Comparison of 80GB 3.5" SATA II, Momentus 5400.2 40GB
37 specifications	A Seagate 80GB 3.5" SATA II View product	B Seagate Momentus 5400.2 40GB View product
Features5 differ
HDD capacityDiffers	80 GB	40 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
InterfaceDiffers	Serial ATA II	Ultra-ATA/133
TypeKnown for one	HDD	Unknown — not stated by the source
Storage drive buffer sizeDiffers	2 MB	8 MB
HDD number of headsKnown for one	2	Unknown — not stated by the source
Read seek timeKnown for one	8.5 ms	Unknown — not stated by the source
Write seek timeKnown for one	9.5 ms	Unknown — not stated by the source
Average latencyDiffers	4.16 ms	5.6 ms
Mean time between failures (MTBF)Known for one	600000 h	Unknown — not stated by the source
Component forKnown for one	Unknown — not stated by the source	Laptop
Average seek timeKnown for one	Unknown — not stated by the source	12.5 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Poweridentical
Operating voltageKnown for one	5 / 12 V	Unknown — not stated by the source
Start-up currentKnown for one	2.8 A	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	0.8 W
Power consumption (standby)Known for one	Unknown — not stated by the source	0.28 W
Operational conditions2 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
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	-60.96 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-60.96 - 12192 m	Unknown — not stated by the source
Operating shockKnown for one	63 G	Unknown — not stated by the source
Non-operating shockDiffers	350 G	900 G
Weight & dimensions4 differ
WidthDiffers	101.6 mm	69.8 mm
DepthDiffers	146.9 mm	100.2 mm
HeightDiffers	26 mm	9.5 mm
WeightDiffers	635 g	100 g
Other featuresidentical
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Linux operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Drive device, transfer rateKnown for one	Unknown — not stated by the source	100 MB/s
External power adapterKnown for one	Unknown — not stated by the source	No
InternalKnown for one	Unknown — not stated by the source	Yes
Mac compatibilityKnown for one	Unknown — not stated by the source	No
USB poweredKnown for one	Unknown — not stated by the source	No

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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