Product comparison · 2 internal hard drives

Samsung Spinpoint M HM120JC internal hard drive vs Seagate 300GB 3.5" SATA

11specifications compared
11differ
0identical
21known for one product only

Key differences

The Seagate 300GB 3.5" SATA has 180 GB more HDD capacity than the Samsung Spinpoint M HM120JC internal hard drive (300 GB vs 120 GB). The Seagate 300GB 3.5" SATA has 1,800 RPM more HDD speed than the Samsung Spinpoint M HM120JC internal hard drive (7200 RPM vs 5400 RPM). The Seagate 300GB 3.5" SATA 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, Serial ATA on the Seagate 300GB 3.5" SATA. Operating voltage: 5 V on the Samsung Spinpoint M HM120JC internal hard drive, 5 / 12 V on the Seagate 300GB 3.5" SATA.

HDD capacity
- Spinpoint M HM120JC internal hard drive:120 GB
- 300GB 3.5" SATA:300 GB
HDD speed
- Spinpoint M HM120JC internal hard drive:5400 RPM
- 300GB 3.5" SATA:7200 RPM
HDD size
- Spinpoint M HM120JC internal hard drive:2.5"
- 300GB 3.5" SATA:3.5"
Interface
- Spinpoint M HM120JC internal hard drive:Ultra-ATA/100
- 300GB 3.5" SATA:Serial ATA
Storage drive buffer size
- Spinpoint M HM120JC internal hard drive:8 MB
- 300GB 3.5" SATA:16 MB
Average latency
- Spinpoint M HM120JC internal hard drive:5.6 ms
- 300GB 3.5" SATA:4.16 ms
Operating voltage
- Spinpoint M HM120JC internal hard drive:5 V
- 300GB 3.5" SATA:5 / 12 V
Width
- Spinpoint M HM120JC internal hard drive:100 mm
- 300GB 3.5" SATA:101.8 mm

Side by side

Differences highlightedShow differences only

Comparison of HM120JC, 300GB 3.5" SATA
32 specifications	A Samsung Spinpoint M HM120JC internal hard drive Model HM120JC View product	B Seagate 300GB 3.5" SATA View product
Features6 differ
HDD capacityDiffers	120 GB	300 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA
TypeKnown for one	Unknown — not stated by the source	HDD
Storage drive buffer sizeDiffers	8 MB	16 MB
Average latencyDiffers	5.6 ms	4.16 ms
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
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
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
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
Operating shockKnown for one	Unknown — not stated by the source	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	300 G
Weight & dimensions4 differ
WidthDiffers	100 mm	101.8 mm
DepthDiffers	70 mm	147 mm
HeightDiffers	9.4 mm	26.1 mm
WeightDiffers	100 g	635 g
Other featuresidentical
Mac compatibilityKnown for one	Unknown — not stated by the source	No
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Yes
Linux operating systems supportedKnown for one	Unknown — not stated by the source	Yes
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	28 dB
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

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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