Product comparison · 2 internal hard drives

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

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

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 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
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
Weight & dimensions1 differ
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
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.