Product comparison · 2 internal hard drives

Seagate 320GB 3.5 vs Seagate 750GB 3.5

26specifications compared
8differ
18identical
10known for one product only

Key differences

HDD capacity
- 320GB 3.5:320 GB
- 750GB 3.5:750 GB
Storage drive buffer size
- 320GB 3.5:16 MB
- 750GB 3.5:32 MB
Track to track seek time
- 320GB 3.5:8.5 ms
- 750GB 3.5:0.8 ms
Mean time between failures (MTBF)
- 320GB 3.5:700000 h
- 750GB 3.5:1200000 h
Power consumption (idle)
- 320GB 3.5:9.3 W
- 750GB 3.5:8 W
Operating shock
- 320GB 3.5:68 G
- 750GB 3.5:63 G
Non-operating shock
- 320GB 3.5:350 G
- 750GB 3.5:300 G
Weight
- 320GB 3.5:580 g
- 750GB 3.5:633 g

Side by side

Differences highlightedShow differences only

Comparison of 320GB 3.5, 750GB 3.5
36 specifications	A Seagate 320GB 3.5 View product	B Seagate 750GB 3.5 View product
Features4 differ
HDD capacityDiffers	320 GB	750 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Interface	Serial ATA II	Serial ATA II
Type	HDD	HDD
Storage drive buffer sizeDiffers	16 MB	32 MB
HDD number of headsKnown for one	4	Unknown — not stated by the source
Track to track seek timeDiffers	8.5 ms	0.8 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	512	512
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	700000 h	1200000 h
Read seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	9.5 ms
Power1 differ
Power consumption (idle)Differs	9.3 W	8 W
Power consumption (read)Known for one	13 W	Unknown — not stated by the source
Power consumption (write)Known for one	13 W	Unknown — not stated by the source
Operating voltage	5 / 12 V	5 / 12 V
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	11.6 W
Operational conditions2 differ
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitude	-60.96 - 3048 m	-60.96 - 3048 m
Non-operating altitude	-60.96 - 12192 m	-60.96 - 12192 m
Operating shockDiffers	68 G	63 G
Non-operating shockDiffers	350 G	300 G
Weight & dimensions1 differ
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	580 g	633 g
Other featuresidentical
Windows operating systems supported	Yes	Yes
Linux operating systems supported	Yes	Yes
Acoustic pressure emissionsKnown for one	2.7 dB	Unknown — not stated by the source
Sustained data rateKnown for one	Unknown — not stated by the source	105 MB/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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