Product comparison · 2 internal hard drives

Seagate Barracuda 7200.7 40GB 2MB (ST340014A) vs Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS)

16specifications compared
5differ
11identical
2known for one product only

Key differences

The Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS) has 40 GB more HDD capacity than the Seagate Barracuda 7200.7 40GB 2MB (ST340014A) (80 GB vs 40 GB). The Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS) has 6 MB more storage drive buffer size than the Seagate Barracuda 7200.7 40GB 2MB (ST340014A) (8 MB vs 2 MB). The Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS) has 1 W more power requirements than the Seagate Barracuda 7200.7 40GB 2MB (ST340014A) (13.5 W vs 12.5 W). Interface: Ultra-ATA/100 on the Seagate Barracuda 7200.7 40GB 2MB (ST340014A), Serial ATA on the Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS).

HDD capacity
- Barracuda 7200.7 40GB 2MB (ST340014A):40 GB
- Barracuda 7200.7 SATA NCQ 80GB (ST380817AS):80 GB
Interface
- Barracuda 7200.7 40GB 2MB (ST340014A):Ultra-ATA/100
- Barracuda 7200.7 SATA NCQ 80GB (ST380817AS):Serial ATA
Storage drive buffer size
- Barracuda 7200.7 40GB 2MB (ST340014A):2 MB
- Barracuda 7200.7 SATA NCQ 80GB (ST380817AS):8 MB
Power requirements
- Barracuda 7200.7 40GB 2MB (ST340014A):12.5 W
- Barracuda 7200.7 SATA NCQ 80GB (ST380817AS):13.5 W
Acoustic pressure emissions
- Barracuda 7200.7 40GB 2MB (ST340014A):22 dB
- Barracuda 7200.7 SATA NCQ 80GB (ST380817AS):25 dB

Side by side

Differences highlightedShow differences only

Comparison of Barracuda 7200.7 40GB 2MB (ST340014A), Barracuda 7200.7 SATA NCQ 80GB (ST380817AS)
18 specifications	A Seagate Barracuda 7200.7 40GB 2MB (ST340014A)View product	B Seagate Barracuda 7200.7 SATA NCQ 80GB (ST380817AS)View product
Features3 differ
HDD capacityDiffers	40 GB	80 GB
HDD speed	7200 RPM	7200 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 time	8.5 ms	8.5 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	512	512
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Weight & dimensionsidentical
Weight	635 g	635 g
Other features2 differ
Special features	350 Gs non-op shock 3D Defense System S.M.A.R.T.	350 Gs non-op shock 3D Defense System S.M.A.R.T.
Power requirementsDiffers	12.5 W	13.5 W
Dimensions (WxDxH)	101.6 x 146.99 x 26.035 mm	101.6 x 146.99 x 26.035 mm
Internal	Yes	Yes
USB powered	No	No
Sustained data rate	58 MB/s	58 MB/s
Acoustic pressure emissionsDiffers	22 dB	25 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.

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