Product comparison · 2 internal hard drives

Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) vs Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive

15specifications compared
6differ
9identical
3known for one product only

Key differences

The Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) has 40 GB more HDD capacity than the Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive (120 GB vs 80 GB). The Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) has 6 MB more storage drive buffer size than the Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive (8 MB vs 2 MB). The Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive has 0.5 ms more average seek time than the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option) (13 ms vs 12.5 ms). Interface: Ultra-ATA/100 on the Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option), Serial ATA on the Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive.

HDD capacity
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):120 GB
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:80 GB
Interface
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):Ultra-ATA/100
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:Serial ATA
Storage drive buffer size
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):8 MB
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:2 MB
Average seek time
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):12.5 ms
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:13 ms
Average latency
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):5.6 ms
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:5.5 ms
Weight
- 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option):100 g
- ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive:102 g

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option), ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive
18 specifications	A Acer 120GB 2.5" 5400rpm Seagate Merrcury2 ST9120821A (RohS) (option)View product	B Lenovo ThinkPad 80 GB 5400 rpm Serial ATA Hard Drive View product
Features5 differ
HDD capacityDiffers	120 GB	80 GB
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA
Storage drive buffer sizeDiffers	8 MB	2 MB
Average seek timeDiffers	12.5 ms	13 ms
Average latencyDiffers	5.6 ms	5.5 ms
Poweridentical
Operating voltage	5 V	5 V
Operational conditionsidentical
Operating temperature (T-T)	5 - 55 °C	5 - 55 °C
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
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	8 - 90%
Weight & dimensions1 differ
Width	70 mm	70 mm
Depth	100 mm	100 mm
Height	9.5 mm	9.5 mm
WeightDiffers	100 g	102 g
Other featuresidentical
Dimensions (WxDxH)	70 x 100 x 9.5 mm	70 x 100 x 9.5 mm
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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