Product comparison · 2 internal hard drives

Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) vs Fujitsu HDD SATAII 500GB

6specifications compared
5differ
1identical
11known for one product only

Key differences

The Fujitsu HDD SATAII 500GB has 380 GB more HDD capacity than the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) (500 GB vs 120 GB). The Fujitsu HDD SATAII 500GB has 1,800 RPM more HDD speed than the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) (7200 RPM vs 5400 RPM). The Fujitsu HDD SATAII 500GB has 1" more HDD size than the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) (3.5" vs 2.5"). Interface: Ultra-ATA/100 on the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option), Serial ATA II on the Fujitsu HDD SATAII 500GB. Operating voltage: 5 V on the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option), 5 / 12 V on the Fujitsu HDD SATAII 500GB.

HDD capacity
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):120 GB
- HDD SATAII 500GB:500 GB
HDD speed
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):5400 RPM
- HDD SATAII 500GB:7200 RPM
HDD size
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):2.5"
- HDD SATAII 500GB:3.5"
Interface
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):Ultra-ATA/100
- HDD SATAII 500GB:Serial ATA II
Operating voltage
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):5 V
- HDD SATAII 500GB:5 / 12 V

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option), HDD SATAII 500GB
17 specifications	A Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option)View product	B Fujitsu HDD SATAII 500GB View product
Features4 differ
HDD capacityDiffers	120 GB	500 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA II
Storage drive buffer sizeKnown for one	8 MB	Unknown — not stated by the source
Average seek timeKnown for one	12.5 ms	Unknown — not stated by the source
Average latencyKnown for one	5.6 ms	Unknown — not stated by the source
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)Known for one	5 - 55 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating shockKnown for one	250 G	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	70 mm	Unknown — not stated by the source
DepthKnown for one	100 mm	Unknown — not stated by the source
HeightKnown for one	9.5 mm	Unknown — not stated by the source
WeightKnown for one	100 g	Unknown — not stated by the source
Other featuresidentical
Dimensions (WxDxH)Known for one	70 x 100 x 9.5 mm	Unknown — not stated by the source
Internal	Yes	Yes

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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