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Product comparison · 2 internal hard drives

Samsung Spinpoint M HM120JC internal hard drive vs Seagate 300GB 3.5" Ultra ATA/100

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  • 12specifications compared
  • 11differ
  • 1identical
  • 24known for one product only

Key differences

The Seagate 300GB 3.5" Ultra ATA/100 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" Ultra ATA/100 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" Ultra ATA/100 has 1" more HDD size than the Samsung Spinpoint M HM120JC internal hard drive (3.5" vs 2.5"). Operating voltage: 5 V on the Samsung Spinpoint M HM120JC internal hard drive, 5 / 12 V on the Seagate 300GB 3.5" Ultra ATA/100.

  • HDD capacity
    • 120 GB
    • 300 GB
  • HDD speed
    • 5400 RPM
    • 7200 RPM
  • HDD size
    • 2.5"
    • 3.5"
  • Storage drive buffer size
    • 8 MB
    • 16 MB
  • Average latency
    • 5.6 ms
    • 4.16 ms
  • Start/stop cycles
    • 600000
    • 50000
  • Operating voltage
    • 5 V
    • 5 / 12 V
  • Width
    • 100 mm
    • 101.6 mm

Side by side

Differences highlightedShow differences only
36 specifications
A

Samsung

Spinpoint M HM120JC internal hard drive

Model HM120JC

View product
B

Seagate

300GB 3.5" Ultra ATA/100View product
Features6 differ
HDD capacityDiffers120 GB300 GB
HDD speedDiffers5400 RPM7200 RPM
HDD sizeDiffers2.5"3.5"
TypeKnown for oneHDD
Storage drive buffer sizeDiffers8 MB16 MB
HDD number of cylindersKnown for one16383
HDD number of headsKnown for one16
Read seek timeKnown for one11 ms
Write seek timeKnown for one12 ms
Average latencyDiffers5.6 ms4.16 ms
Start/stop cyclesDiffers60000050000
Track to track seek timeKnown for one2 ms
Average seek timeKnown for one12 ms
Bytes per sectorKnown for one512
Mean time between failures (MTBF)Known for one330000 h
Power1 differ
Operating voltageDiffers5 V5 / 12 V
Start-up currentKnown for one2.6 A
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 60 °C
Storage temperature (T-T)Known for one-40 - 70 °C
Operating relative humidity (H-H)Known for one5 - 90%
Storage relative humidity (H-H)Known for one5 - 95%
Operating altitudeKnown for one-60.96 - 3048 m
Non-operating altitudeKnown for one-60.96 - 12192 m
Operating shockKnown for one63 G
Non-operating shockKnown for one300 G
Weight & dimensions4 differ
WidthDiffers100 mm101.6 mm
DepthDiffers70 mm147 mm
HeightDiffers9.4 mm26.1 mm
WeightDiffers100 g655 g
Other featuresidentical
Drive devices burst data transfer rate (DMA)Known for one2
Drive devices burst data transfer rate (PIO)Known for one4
Drive devices burst data transfer rate (Ultra DMA)Known for one5
HDD transfer rateKnown for one431 Mbit/s
Drive device, transfer rateKnown for one100 MB/s
InternalKnown for oneYes

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