Product comparison · 2 internal hard drives

Samsung SpinPoint F1 HA751LJ internal hard drive vs Samsung HD642JJ + 20PK Kit

23specifications compared
6differ
17identical
9known for one product only

Key differences

HDD capacity
- SpinPoint F1 HA751LJ internal hard drive:750 GB
- HD642JJ + 20PK Kit:640 GB
Interface
- SpinPoint F1 HA751LJ internal hard drive:Serial ATA
- HD642JJ + 20PK Kit:Serial ATA II
Storage drive buffer size
- SpinPoint F1 HA751LJ internal hard drive:32 MB
- HD642JJ + 20PK Kit:16 MB
Power consumption (standby)
- SpinPoint F1 HA751LJ internal hard drive:0.7 W
- HD642JJ + 20PK Kit:1.18 W
Power consumption (PowerSave)
- SpinPoint F1 HA751LJ internal hard drive:0.7 W
- HD642JJ + 20PK Kit:1.18 W
Weight
- SpinPoint F1 HA751LJ internal hard drive:650 g
- HD642JJ + 20PK Kit:610 g

Side by side

Differences highlightedShow differences only

Comparison of HA751LJ, HD642JJ + 20PK Kit
32 specifications	A Samsung SpinPoint F1 HA751LJ internal hard drive Model HA751LJ View product	B Samsung HD642JJ + 20PK Kit View product
Features3 differ
HDD capacityDiffers	750 GB	640 GB
HDD speed	7200 RPM	7200 RPM
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
InterfaceDiffers	Serial ATA	Serial ATA II
Storage drive buffer sizeDiffers	32 MB	16 MB
Average seek time	8.9 ms	8.9 ms
Average latency	4.17 ms	4.17 ms
Bytes per sector	512	512
Start/stop cycles	50000	50000
Power2 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	8.56 W
Power consumption (standby)Differs	0.7 W	1.18 W
Power consumption (PowerSave)Differs	0.7 W	1.18 W
Operating voltageKnown for one	Unknown — not stated by the source	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitude	-300 - 3000 m	-300 - 3000 m
Non-operating altitude	-300 - 12000 m	-300 - 12000 m
Operating shock	70 G	70 G
Non-operating shock	300 G	300 G
Weight & dimensions1 differ
Width	101.5 mm	101.5 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	650 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
Internal	Yes	Yes
Power requirementsKnown for one	+5V±5%, +12V±10%	Unknown — not stated by the source
Data transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Supported data transfer ratesKnown for one	175/300 MB/s	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	29 dB	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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