Product comparison · 2 internal hard drives

Samsung Spinpoint M HM320II internal hard drive vs Samsung Spinpoint M HM400JI internal hard drive

Key differences

HDD capacity
- Spinpoint M HM320II internal hard drive:320 GB
- Spinpoint M HM400JI internal hard drive:400 GB

Differences highlightedShow differences only

Comparison of HM320II, HM400JI
34 specifications	A Samsung Spinpoint M HM320II internal hard drive Model HM320II View product	B Samsung Spinpoint M HM400JI internal hard drive Model HM400JI View product
Features1 differ
HDD capacityDiffers	320 GB	400 GB
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
Interface	Serial ATA II	Serial ATA II
TypeKnown for one	HDD	Unknown — not stated by the source
Storage drive buffer size	8 MB	8 MB
Average seek time	12 ms	12 ms
Average latency	5.6 ms	5.6 ms
Bytes per sector	512	512
Poweridentical
Power consumption (typical)	2.5 W	2.5 W
Power consumption (standby)	0.25 W	0.25 W
Operating voltage	5 V	5 V
Start-up current	1 A	1 A
Operational conditionsidentical
Operating temperature (T-T)	5 - 55 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	8 - 90%	8 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating vibration	1.5 Grms	1.5 Grms
Operating altitude	-300 - 3000 m	-300 - 3000 m
Non-operating altitude	-400 - 15000 m	-400 - 15000 m
Operating shock	400 G	400 G
Non-operating shock	900 G	900 G
Packaging contentidentical
User guide	Yes	Yes
Weight & dimensionsidentical
Width	69.8 mm	69.8 mm
Depth	100 mm	100 mm
Height	9.5 mm	9.5 mm
Weight	105 g	105 g
Other featuresidentical
Power requirements	+5V±5%	+5V±5%
Product colour	Black	Black
Compatible operating systems	Windows 98/2000/XP	Windows 98/2000/XP
Drive ready time	4 s	4 s
Internal	Yes	Yes
Supported data transfer rates	138, 300MB/s	138, 300MB/s
Acoustic pressure emissions	2.6 dB	2.6 dB

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.