Product comparison · 2 internal hard drives

Acer 120GB 2.5" SATA vs Samsung 500GB HDD

16specifications compared
14differ
2identical
18known for one product only

Key differences

HDD capacity
- 120GB 2.5" SATA:120 GB
- 500GB HDD:500 GB
HDD speed
- 120GB 2.5" SATA:5400 RPM
- 500GB HDD:7200 RPM
HDD size
- 120GB 2.5" SATA:2.5"
- 500GB HDD:3.5"
Interface
- 120GB 2.5" SATA:Serial ATA
- 500GB HDD:Serial ATA II
Storage drive buffer size
- 120GB 2.5" SATA:8 MB
- 500GB HDD:16 MB
Average seek time
- 120GB 2.5" SATA:12.5 ms
- 500GB HDD:8.9 ms
Average latency
- 120GB 2.5" SATA:5.6 ms
- 500GB HDD:4.17 ms
Operating voltage
- 120GB 2.5" SATA:5 V
- 500GB HDD:5 / 12 V

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" SATA, 500GB HDD
34 specifications	A Acer 120GB 2.5" SATA View product	B Samsung 500GB HDD View product
Features7 differ
HDD capacityDiffers	120 GB	500 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Serial ATA	Serial ATA II
Storage drive buffer sizeDiffers	8 MB	16 MB
Full stroke seek timeKnown for one	Unknown — not stated by the source	18 ms
Track to track seek timeKnown for one	Unknown — not stated by the source	0.8 ms
Average seek timeDiffers	12.5 ms	8.9 ms
Average latencyDiffers	5.6 ms	4.17 ms
SMART technologyKnown for one	Unknown — not stated by the source	Yes
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	600000 h
Power1 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	8 W
Power consumption (standby)Known for one	Unknown — not stated by the source	1.2 W
Operating voltageDiffers	5 V	5 / 12 V
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °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	0 - 3000 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	0 - 12000 m
Operating shockDiffers	250 G	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	300 G
Weight & dimensions4 differ
WidthDiffers	70 mm	101.6 mm
DepthDiffers	100 mm	146.1 mm
HeightDiffers	9.5 mm	25.4 mm
WeightDiffers	100 g	640 g
Other featuresidentical
Drive ready timeKnown for one	Unknown — not stated by the source	10 s
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	2.4 dB
Dimensions (WxDxH)Known for one	70 x 100 x 9.5 mm	Unknown — not stated by the source
Drive device, transfer rateKnown for one	150 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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