Product comparison · 2 internal hard drives

Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB vs Seagate Momentus 5400.3 120GB Ultra ATA/100

12specifications compared
8differ
4identical
13known for one product only

Key differences

The Seagate Momentus 5400.3 120GB Ultra ATA/100 has 40 GB more HDD capacity than the Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB (120 GB vs 80 GB). The Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB has 1,800 RPM more HDD speed than the Seagate Momentus 5400.3 120GB Ultra ATA/100 (7200 RPM vs 5400 RPM). The Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB has 1" more HDD size than the Seagate Momentus 5400.3 120GB Ultra ATA/100 (3.5" vs 2.5"). Interface: Serial ATA II on the Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB, Ultra-ATA/100 on the Seagate Momentus 5400.3 120GB Ultra ATA/100. Operating voltage: 5 / 12 V on the Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB, 5 V on the Seagate Momentus 5400.3 120GB Ultra ATA/100.

HDD capacity
- Barracuda 80GB Serial ATA II 7200RPM 8MB:80 GB
- Momentus 5400.3 120GB Ultra ATA/100:120 GB
HDD speed
- Barracuda 80GB Serial ATA II 7200RPM 8MB:7200 RPM
- Momentus 5400.3 120GB Ultra ATA/100:5400 RPM
HDD size
- Barracuda 80GB Serial ATA II 7200RPM 8MB:3.5"
- Momentus 5400.3 120GB Ultra ATA/100:2.5"
Interface
- Barracuda 80GB Serial ATA II 7200RPM 8MB:Serial ATA II
- Momentus 5400.3 120GB Ultra ATA/100:Ultra-ATA/100
Average latency
- Barracuda 80GB Serial ATA II 7200RPM 8MB:4.16 ms
- Momentus 5400.3 120GB Ultra ATA/100:5.6 ms
Operating voltage
- Barracuda 80GB Serial ATA II 7200RPM 8MB:5 / 12 V
- Momentus 5400.3 120GB Ultra ATA/100:5 V
Weight
- Barracuda 80GB Serial ATA II 7200RPM 8MB:690 g
- Momentus 5400.3 120GB Ultra ATA/100:102 g
Dimensions (WxDxH)
- Barracuda 80GB Serial ATA II 7200RPM 8MB:101.6 x 146.99 x 26.1 mm
- Momentus 5400.3 120GB Ultra ATA/100:69.85 x 100.2 x 9.5 mm

Side by side

Differences highlightedShow differences only

Comparison of Barracuda 80GB Serial ATA II 7200RPM 8MB, Momentus 5400.3 120GB Ultra ATA/100
25 specifications	A Seagate Barracuda 80GB Serial ATA II 7200RPM 8MB View product	B Seagate Momentus 5400.3 120GB Ultra ATA/100 View product
Features5 differ
HDD capacityDiffers	80 GB	120 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA II	Ultra-ATA/100
Component forKnown for one	Unknown — not stated by the source	Laptop
HDD number of headsKnown for one	Unknown — not stated by the source	3
Access timeKnown for one	Unknown — not stated by the source	12.5 ms
Average latencyDiffers	4.16 ms	5.6 ms
Power1 differ
Power consumption (standby)Known for one	Unknown — not stated by the source	0.2 W
Operating voltageDiffers	5 / 12 V	5 V
Operational conditionsidentical
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating shockKnown for one	63 G	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	Unknown — not stated by the source	69.8 mm
DepthKnown for one	Unknown — not stated by the source	100.2 mm
HeightKnown for one	Unknown — not stated by the source	9.5 mm
WeightDiffers	690 g	102 g
Other features1 differ
HDD transfer rateKnown for one	Unknown — not stated by the source	100 Mbit/s
Dimensions (WxDxH)Differs	101.6 x 146.99 x 26.1 mm	69.85 x 100.2 x 9.5 mm
Sustained data rateKnown for one	Unknown — not stated by the source	44 MB/s
USB poweredKnown for one	No	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	25 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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