Product comparison · 2 internal hard drives

Seagate 300GB 2.5 vs Seagate Constellation ES SAS 500GB

22specifications compared
18differ
4identical
9known for one product only

Key differences

HDD capacity
- 300GB 2.5:300 GB
- Constellation ES SAS 500GB:500 GB
HDD speed
- 300GB 2.5:10000 RPM
- Constellation ES SAS 500GB:7200 RPM
HDD size
- 300GB 2.5:2.5"
- Constellation ES SAS 500GB:3.5"
Storage drive buffer size
- 300GB 2.5:16 MB
- Constellation ES SAS 500GB:64 MB
Read seek time
- 300GB 2.5:3.6 ms
- Constellation ES SAS 500GB:8.5 ms
Write seek time
- 300GB 2.5:4.2 ms
- Constellation ES SAS 500GB:9.5 ms
Mean time between failures (MTBF)
- 300GB 2.5:1600000 h
- Constellation ES SAS 500GB:1200000 h
Power consumption (idle)
- 300GB 2.5:3.5 W
- Constellation ES SAS 500GB:4.67 W

Side by side

Differences highlightedShow differences only

Comparison of 300GB 2.5, Constellation ES SAS 500GB
31 specifications	A Seagate 300GB 2.5 View product	B Seagate Constellation ES SAS 500GB View product
Features7 differ
HDD capacityDiffers	300 GB	500 GB
HDD speedDiffers	10000 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
Interface	SAS	SAS
Type	HDD	HDD
Component for	Server/workstation	Server/workstation
Storage drive buffer sizeDiffers	16 MB	64 MB
HDD interface transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Read seek timeDiffers	3.6 ms	8.5 ms
Write seek timeDiffers	4.2 ms	9.5 ms
Bytes per sector	512	512
Mean time between failures (MTBF)Differs	1600000 h	1200000 h
HDD number of headsKnown for one	4	Unknown — not stated by the source
Average latencyKnown for one	3 ms	Unknown — not stated by the source
Power2 differ
Power consumption (idle)Differs	3.5 W	4.67 W
Power consumption (read)Known for one	Unknown — not stated by the source	7.89 W
Power consumption (write)Known for one	Unknown — not stated by the source	7.18 W
Operating voltageDiffers	5 V	5 / 12 V
Operational conditions5 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Operating vibrationDiffers	0.5 G	70 G
Non-operating vibrationDiffers	2.4 G	350 G
Operating shockDiffers	60 G	0.5 G
Non-operating shockDiffers	300 G	2 G
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	70 mm	101.8 mm
DepthDiffers	100.5 mm	147 mm
HeightDiffers	14.8 mm	26.1 mm
WeightDiffers	227 g	608 g
Other featuresidentical
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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