Product comparison · 2 internal hard drives

Lenovo 8321455 internal hard drive vs Seagate 40GB 3.5

9specifications compared
6differ
3identical
24known for one product only

Key differences

HDD capacity
- 8321455 internal hard drive:300 GB
- 40GB 3.5:40 GB
HDD speed
- 8321455 internal hard drive:15000 RPM
- 40GB 3.5:7200 RPM
Interface
- 8321455 internal hard drive:SAS
- 40GB 3.5:Ultra-ATA/100
Operating temperature (T-T)
- 8321455 internal hard drive:5 - 35 °C
- 40GB 3.5:0 - 60 °C
Storage temperature (T-T)
- 8321455 internal hard drive:5 - 43 °C
- 40GB 3.5:-40 - 70 °C
Operating relative humidity (H-H)
- 8321455 internal hard drive:8 - 95%
- 40GB 3.5:5 - 90%

Side by side

Differences highlightedShow differences only

Comparison of 8321455, 40GB 3.5
33 specifications	A Lenovo 8321455 internal hard drive Model 8321455 View product	B Seagate 40GB 3.5 View product
Features3 differ
HDD capacityDiffers	300 GB	40 GB
HDD speedDiffers	15000 RPM	7200 RPM
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
InterfaceDiffers	SAS	Ultra-ATA/100
Type	HDD	HDD
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	2 MB
HDD number of cylindersKnown for one	Unknown — not stated by the source	16383
HDD number of headsKnown for one	Unknown — not stated by the source	16
Read seek timeKnown for one	Unknown — not stated by the source	11 ms
Write seek timeKnown for one	Unknown — not stated by the source	12 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Poweridentical
Operating voltageKnown for one	Unknown — not stated by the source	5 / 12 V
Start-up currentKnown for one	Unknown — not stated by the source	2.8 A
Operational conditions3 differ
Operating temperature (T-T)Differs	5 - 35 °C	0 - 60 °C
Storage temperature (T-T)Differs	5 - 43 °C	-40 - 70 °C
Operating relative humidity (H-H)Differs	8 - 95%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m
Operating shockKnown for one	Unknown — not stated by the source	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	350 G
Packaging contentidentical
Storage drive adapter includedKnown for one	Unknown — not stated by the source	No
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	101.6 mm
DepthKnown for one	Unknown — not stated by the source	146.9 mm
HeightKnown for one	Unknown — not stated by the source	26 mm
WeightKnown for one	Unknown — not stated by the source	580 g
Packaging dataidentical
Quantity per pack	1 pc(s)	1 pc(s)
Other featuresidentical
Drive devices burst data transfer rate (DMA)Known for one	Unknown — not stated by the source	2
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	5
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source

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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