Product comparison · 2 internal hard drives

Seagate 320GB 3.5 vs Seagate Constellation ES SAS 500GB

19specifications compared
12differ
7identical
22known for one product only

Key differences

HDD capacity
- 320GB 3.5:320 GB
- Constellation ES SAS 500GB:500 GB
Interface
- 320GB 3.5:Serial ATA II
- Constellation ES SAS 500GB:SAS
Storage drive buffer size
- 320GB 3.5:16 MB
- Constellation ES SAS 500GB:64 MB
Mean time between failures (MTBF)
- 320GB 3.5:700000 h
- Constellation ES SAS 500GB:1200000 h
Power consumption (idle)
- 320GB 3.5:9.3 W
- Constellation ES SAS 500GB:4.67 W
Power consumption (read)
- 320GB 3.5:13 W
- Constellation ES SAS 500GB:7.89 W
Power consumption (write)
- 320GB 3.5:13 W
- Constellation ES SAS 500GB:7.18 W
Operating temperature (T-T)
- 320GB 3.5:0 - 60 °C
- Constellation ES SAS 500GB:5 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of 320GB 3.5, Constellation ES SAS 500GB
41 specifications	A Seagate 320GB 3.5 View product	B Seagate Constellation ES SAS 500GB View product
Features4 differ
HDD capacityDiffers	320 GB	500 GB
InterfaceDiffers	Serial ATA II	SAS
Storage drive buffer sizeDiffers	16 MB	64 MB
HDD number of headsKnown for one	4	Unknown — not stated by the source
Track to track seek timeKnown for one	8.5 ms	Unknown — not stated by the source
Average latencyKnown for one	4.16 ms	Unknown — not stated by the source
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	700000 h	1200000 h
Component forKnown for one	Unknown — not stated by the source	Server/workstation
HDD interface transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
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
Power3 differ
Power consumption (idle)Differs	9.3 W	4.67 W
Power consumption (read)Differs	13 W	7.89 W
Power consumption (write)Differs	13 W	7.18 W
Start-up currentKnown for one	2.8 A	Unknown — not stated by the source
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 60 °C
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
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 shockDiffers	68 G	0.5 G
Non-operating shockDiffers	350 G	2 G
Operating vibrationKnown for one	Unknown — not stated by the source	70 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	350 G
Weight & dimensions2 differ
WidthDiffers	101.6 mm	101.8 mm
WeightDiffers	580 g	608 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
Acoustic pressure emissionsKnown for one	2.7 dB	Unknown — not stated by the source
Transfer rateKnown for one	Unknown — not stated by the source	150 MB/s
I/O portsKnown for one	Unknown — not stated by the source	2
Cartridge load/Unload cyclesKnown for one	Unknown — not stated by the source	300000

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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