Product comparison · 2 internal hard drives

Seagate Barracuda 7200.7 40GB 2MB (ST340014A) vs Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS)

13specifications compared
11differ
2identical
6known for one product only

Key differences

The Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS) has 60 GB more HDD capacity than the Seagate Barracuda 7200.7 40GB 2MB (ST340014A) (100 GB vs 40 GB). The Seagate Barracuda 7200.7 40GB 2MB (ST340014A) has 1,800 RPM more HDD speed than the Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS) (7200 RPM vs 5400 RPM). The Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS) has 6 MB more storage drive buffer size than the Seagate Barracuda 7200.7 40GB 2MB (ST340014A) (8 MB vs 2 MB). Interface: Ultra-ATA/100 on the Seagate Barracuda 7200.7 40GB 2MB (ST340014A), Serial ATA on the Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS). Operating temperature (T-T): 0 - 60 °C on the Seagate Barracuda 7200.7 40GB 2MB (ST340014A), 5 - 55 °C on the Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS).

HDD capacity
- Barracuda 7200.7 40GB 2MB (ST340014A):40 GB
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):100 GB
HDD speed
- Barracuda 7200.7 40GB 2MB (ST340014A):7200 RPM
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):5400 RPM
Interface
- Barracuda 7200.7 40GB 2MB (ST340014A):Ultra-ATA/100
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):Serial ATA
Storage drive buffer size
- Barracuda 7200.7 40GB 2MB (ST340014A):2 MB
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):8 MB
Average seek time
- Barracuda 7200.7 40GB 2MB (ST340014A):8.5 ms
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):12.5 ms
Average latency
- Barracuda 7200.7 40GB 2MB (ST340014A):4.16 ms
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):5.56 ms
Operating temperature (T-T)
- Barracuda 7200.7 40GB 2MB (ST340014A):0 - 60 °C
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):5 - 55 °C
Weight
- Barracuda 7200.7 40GB 2MB (ST340014A):635 g
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):100 g

Side by side

Differences highlightedShow differences only

Comparison of Barracuda 7200.7 40GB 2MB (ST340014A), Momentus 5400.2 100GB 8MB SATA (ST9100824AS)
19 specifications	A Seagate Barracuda 7200.7 40GB 2MB (ST340014A)View product	B Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS)View product
Features6 differ
HDD capacityDiffers	40 GB	100 GB
HDD speedDiffers	7200 RPM	5400 RPM
InterfaceDiffers	Ultra-ATA/100	Serial ATA
Storage drive buffer sizeDiffers	2 MB	8 MB
HDD number of headsKnown for one	1	Unknown — not stated by the source
Average seek timeDiffers	8.5 ms	12.5 ms
Average latencyDiffers	4.16 ms	5.56 ms
Bytes per sector	512	512
Component forKnown for one	Unknown — not stated by the source	Laptop
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °C
Weight & dimensions1 differ
WeightDiffers	635 g	100 g
Other features3 differ
Special featuresKnown for one	350 Gs non-op shock 3D Defense System S.M.A.R.T.	Unknown — not stated by the source
Power requirementsDiffers	12.5 W	2.2 W
Dimensions (WxDxH)Differs	101.6 x 146.99 x 26.035 mm	69.85 x 100.2 x 9.5 mm
Internal	Yes	Yes
USB poweredKnown for one	No	Unknown — not stated by the source
Sustained data rateKnown for one	58 MB/s	Unknown — not stated by the source
Acoustic pressure emissionsDiffers	22 dB	24 dB
HDD transfer rateKnown for one	Unknown — not stated by the source	150 Mbit/s

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.

More internal hard drive comparisons

All internal hard drive comparisons