Product comparison · 2 internal hard drives

Lenovo 250GB 3.5" SATA II vs Samsung HD642JJ + 20PK Kit

12specifications compared
8differ
4identical
18known for one product only

Key differences

HDD capacity
- 250GB 3.5" SATA II:250 GB
- HD642JJ + 20PK Kit:640 GB
HDD speed
- 250GB 3.5" SATA II:10000 RPM
- HD642JJ + 20PK Kit:7200 RPM
Operating temperature (T-T)
- 250GB 3.5" SATA II:5 - 55 °C
- HD642JJ + 20PK Kit:0 - 60 °C
Operating relative humidity (H-H)
- 250GB 3.5" SATA II:5 - 95%
- HD642JJ + 20PK Kit:5 - 90%
Width
- 250GB 3.5" SATA II:101.6 mm
- HD642JJ + 20PK Kit:101.5 mm
Depth
- 250GB 3.5" SATA II:26.1 mm
- HD642JJ + 20PK Kit:147 mm
Height
- 250GB 3.5" SATA II:147 mm
- HD642JJ + 20PK Kit:26.1 mm
Weight
- 250GB 3.5" SATA II:677 g
- HD642JJ + 20PK Kit:610 g

Side by side

Differences highlightedShow differences only

Comparison of 250GB 3.5" SATA II, HD642JJ + 20PK Kit
30 specifications	A Lenovo 250GB 3.5" SATA II View product	B Samsung HD642JJ + 20PK Kit View product
Features2 differ
HDD capacityDiffers	250 GB	640 GB
HDD speedDiffers	10000 RPM	7200 RPM
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
Average seek timeKnown for one	Unknown — not stated by the source	8.9 ms
Average latencyKnown for one	Unknown — not stated by the source	4.17 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
TypeKnown for one	HDD	Unknown — not stated by the source
Poweridentical
Power consumption (typical)Known for one	Unknown — not stated by the source	8.56 W
Power consumption (standby)Known for one	Unknown — not stated by the source	1.18 W
Power consumption (PowerSave)Known for one	Unknown — not stated by the source	1.18 W
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Differs	5 - 95%	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating altitudeKnown for one	Unknown — not stated by the source	-300 - 3000 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-300 - 12000 m
Operating shockKnown for one	Unknown — not stated by the source	70 G
Non-operating shockKnown for one	Unknown — not stated by the source	300 G
Weight & dimensions4 differ
WidthDiffers	101.6 mm	101.5 mm
DepthDiffers	26.1 mm	147 mm
HeightDiffers	147 mm	26.1 mm
WeightDiffers	677 g	610 g
Other featuresidentical
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	101.5 x 147 x 26.1 mm
Drive ready timeKnown for one	Unknown — not stated by the source	12 s
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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