Product comparison · 2 internal hard drives

Samsung Spinpoint M HM120JC internal hard drive vs Seagate 18.2GB 3.5" SCSI

11specifications compared
11differ
0identical
16known for one product only

Key differences

The Samsung Spinpoint M HM120JC internal hard drive has 102 GB more HDD capacity than the Seagate 18.2GB 3.5" SCSI (120 GB vs 18 GB). The Seagate 18.2GB 3.5" SCSI has 1,800 RPM more HDD speed than the Samsung Spinpoint M HM120JC internal hard drive (7200 RPM vs 5400 RPM). The Seagate 18.2GB 3.5" SCSI has 1" more HDD size than the Samsung Spinpoint M HM120JC internal hard drive (3.5" vs 2.5"). Interface: Ultra-ATA/100 on the Samsung Spinpoint M HM120JC internal hard drive, SCSI on the Seagate 18.2GB 3.5" SCSI. Operating voltage: 5 V on the Samsung Spinpoint M HM120JC internal hard drive, 5 / 12 V on the Seagate 18.2GB 3.5" SCSI.

HDD capacity
- Spinpoint M HM120JC internal hard drive:120 GB
- 18.2GB 3.5" SCSI:18 GB
HDD speed
- Spinpoint M HM120JC internal hard drive:5400 RPM
- 18.2GB 3.5" SCSI:7200 RPM
HDD size
- Spinpoint M HM120JC internal hard drive:2.5"
- 18.2GB 3.5" SCSI:3.5"
Interface
- Spinpoint M HM120JC internal hard drive:Ultra-ATA/100
- 18.2GB 3.5" SCSI:SCSI
Storage drive buffer size
- Spinpoint M HM120JC internal hard drive:8 MB
- 18.2GB 3.5" SCSI:4 MB
Average latency
- Spinpoint M HM120JC internal hard drive:5.6 ms
- 18.2GB 3.5" SCSI:4.7 ms
Operating voltage
- Spinpoint M HM120JC internal hard drive:5 V
- 18.2GB 3.5" SCSI:5 / 12 V
Width
- Spinpoint M HM120JC internal hard drive:100 mm
- 18.2GB 3.5" SCSI:101.6 mm

Side by side

Differences highlightedShow differences only

Comparison of HM120JC, 18.2GB 3.5" SCSI
27 specifications	A Samsung Spinpoint M HM120JC internal hard drive Model HM120JC View product	B Seagate 18.2GB 3.5" SCSI View product
Features6 differ
HDD capacityDiffers	120 GB	18 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Ultra-ATA/100	SCSI
Storage drive buffer sizeDiffers	8 MB	4 MB
Track to track seek timeKnown for one	2 ms	Unknown — not stated by the source
Average seek timeKnown for one	12 ms	Unknown — not stated by the source
Average latencyDiffers	5.6 ms	4.7 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Start/stop cyclesKnown for one	600000	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	330000 h	Unknown — not stated by the source
TypeKnown for one	Unknown — not stated by the source	HDD
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Weight & dimensions4 differ
WidthDiffers	100 mm	101.6 mm
DepthDiffers	70 mm	146 mm
HeightDiffers	9.4 mm	25.4 mm
WeightDiffers	100 g	680 g
Other featuresidentical
HDD transfer rateKnown for one	431 Mbit/s	Unknown — not stated by the source
Drive device, transfer rateKnown for one	100 MB/s	Unknown — not stated by the source
InternalKnown for one	Yes	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	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	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m

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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