Product comparison · 2 internal hard drives

Samsung 640GB SATA II HDD vs Seagate 500GB 2.5" SAS

16specifications compared
9differ
7identical
21known for one product only

Key differences

HDD capacity
- 640GB SATA II HDD:640 GB
- 500GB 2.5" SAS:500 GB
Interface
- 640GB SATA II HDD:Serial ATA II
- 500GB 2.5" SAS:SAS
Average latency
- 640GB SATA II HDD:4.17 ms
- 500GB 2.5" SAS:4.16 ms
Operating temperature (T-T)
- 640GB SATA II HDD:0 - 60 °C
- 500GB 2.5" SAS:5 - 55 °C
Non-operating shock
- 640GB SATA II HDD:300 G
- 500GB 2.5" SAS:400 G
Width
- 640GB SATA II HDD:101.5 mm
- 500GB 2.5" SAS:70 mm
Depth
- 640GB SATA II HDD:147 mm
- 500GB 2.5" SAS:100.5 mm
Height
- 640GB SATA II HDD:26.1 mm
- 500GB 2.5" SAS:14.8 mm

Side by side

Differences highlightedShow differences only

Comparison of 640GB SATA II HDD, 500GB 2.5" SAS
37 specifications	A Samsung 640GB SATA II HDD View product	B Seagate 500GB 2.5" SAS View product
Features3 differ
HDD capacityDiffers	640 GB	500 GB
HDD speed	7200 RPM	7200 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA II	SAS
Storage drive buffer size	16 MB	16 MB
Average seek timeKnown for one	8.9 ms	Unknown — not stated by the source
Average latencyDiffers	4.17 ms	4.16 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Mean time between failures (MTBF)	1200000 h	1200000 h
TypeKnown for one	Unknown — not stated by the source	HDD
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Poweridentical
Power consumption (standby)Known for one	1 W	Unknown — not stated by the source
Power consumption (PowerSave)Known for one	1 W	Unknown — not stated by the source
Operating voltage	5 V	5 V
Power consumption (typical)Known for one	Unknown — not stated by the source	4 W
Power consumption (idle)Known for one	Unknown — not stated by the source	2.9 W
Operational conditions2 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
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	-300 - 3000 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-300 - 12000 m	Unknown — not stated by the source
Operating shock	70 G	70 G
Non-operating shockDiffers	300 G	400 G
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	2.4 G
Weight & dimensions4 differ
WidthDiffers	101.5 mm	70 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	14.8 mm
WeightDiffers	610 g	196 g
Other featuresidentical
Dimensions (WxDxH)Known for one	101.5 x 147 x 26.1 mm	Unknown — not stated by the source
Drive device, transfer rateKnown for one	175 MB/s	Unknown — not stated by the source
Drive ready timeKnown for one	12 s	Unknown — not stated by the source
InternalKnown for one	Yes	Unknown — not stated by the source
Maximum data transfer rateKnown for one	300 Mbit/s	Unknown — not stated by the source
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Yes

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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