Product comparison · 2 internal hard drives

Samsung 320GB Serial ATA II HDD, 20-pk vs Samsung HM250JI- 250GB HDD

Key differences

HDD capacity
- 320GB Serial ATA II HDD, 20-pk:320 GB
- HM250JI- 250GB HDD:250 GB
HDD speed
- 320GB Serial ATA II HDD, 20-pk:7200 RPM
- HM250JI- 250GB HDD:5400 RPM
HDD size
- 320GB Serial ATA II HDD, 20-pk:3.5"
- HM250JI- 250GB HDD:2.5"
Interface
- 320GB Serial ATA II HDD, 20-pk:Serial ATA II
- HM250JI- 250GB HDD:Serial ATA
Storage drive buffer size
- 320GB Serial ATA II HDD, 20-pk:16 MB
- HM250JI- 250GB HDD:8 MB
Full stroke seek time
- 320GB Serial ATA II HDD, 20-pk:18 ms
- HM250JI- 250GB HDD:22 ms
Track to track seek time
- 320GB Serial ATA II HDD, 20-pk:0.8 ms
- HM250JI- 250GB HDD:2 ms
Average seek time
- 320GB Serial ATA II HDD, 20-pk:8.9 ms
- HM250JI- 250GB HDD:12 ms

Differences highlightedShow differences only

Comparison of 320GB Serial ATA II HDD, 20-pk, HM250JI- 250GB HDD
28 specifications	A Samsung 320GB Serial ATA II HDD, 20-pk View product	B Samsung HM250JI- 250GB HDD View product
Features10 differ
HDD capacityDiffers	320 GB	250 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer sizeDiffers	16 MB	8 MB
Full stroke seek timeDiffers	18 ms	22 ms
Track to track seek timeDiffers	0.8 ms	2 ms
Average seek timeDiffers	8.9 ms	12 ms
Average latencyDiffers	4.17 ms	5.6 ms
Bytes per sector	512	512
Mean time between failures (MTBF)Differs	600000 h	330000 h
Power2 differ
Power consumption (typical)Differs	8 W	2 W
Power consumption (standby)Known for one	Unknown — not stated by the source	0.25 W
Power consumption (PowerSave)Known for one	Unknown — not stated by the source	0.20 W
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °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 altitudeKnown for one	Unknown — not stated by the source	-300 - 3000 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-300 - 15000 m
Operating shockDiffers	63 G	325 G
Non-operating shockDiffers	350 G	1000 G
Other features2 differ
Power requirementsDiffers	+5V; +12V	+5V
Drive ready timeDiffers	10 s	3.5 s
Internal	Yes	Yes
Acoustic pressure emissions	2.4 dB	2.4 dB
HDD transfer rateKnown for one	300 Mbit/s	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.