Product comparison · 2 internal hard drives

Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option) vs Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option)

14specifications compared
6differ
8identical
4known for one product only

Key differences

The Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) has 1,200 RPM more HDD speed than the Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option) (5400 RPM vs 4200 RPM). The Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) has 1.5 ms more average seek time than the Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option) (12.5 ms vs 11 ms). The Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option) has 1.5 ms more average latency than the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) (7.1 ms vs 5.6 ms). Interface: Ultra-ATA/133 on the Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option), Ultra-ATA/100 on the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option). Storage temperature (T-T): -40 - 65 °C on the Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option), -40 - 70 °C on the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option).

HDD speed
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):4200 RPM
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):5400 RPM
Interface
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):Ultra-ATA/133
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):Ultra-ATA/100
Average seek time
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):11 ms
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):12.5 ms
Average latency
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):7.1 ms
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):5.6 ms
Storage temperature (T-T)
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):-40 - 65 °C
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):-40 - 70 °C
Weight
- 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option):99 g
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):100 g

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option), 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option)
18 specifications	A Acer 120GB 2.5" 4200rpm HGST HTS421212H9AT00 (ROHS) (option)View product	B Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option)View product
Features4 differ
HDD speedDiffers	4200 RPM	5400 RPM
HDD sizeKnown for one	Unknown — not stated by the source	2.5"
InterfaceDiffers	Ultra-ATA/133	Ultra-ATA/100
Average seek timeDiffers	11 ms	12.5 ms
Average latencyDiffers	7.1 ms	5.6 ms
Poweridentical
Operating voltageKnown for one	Unknown — not stated by the source	5 V
Operational conditions1 differ
Storage temperature (T-T)Differs	-40 - 65 °C	-40 - 70 °C
Operating shockKnown for one	Unknown — not stated by the source	250 G
Weight & dimensions1 differ
WeightDiffers	99 g	100 g
Other featuresidentical
Drive device, transfer rateKnown for one	380 MB/s	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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