Product comparison · 2 internal hard drives

Acer 120GB 2.5” 5400rpm hard drive vs HP 40GB, UATA 100, 7200 rpm

6specifications compared
5differ
1identical
4known for one product only

Key differences

The Acer 120GB 2.5” 5400rpm hard drive has 80 GB more HDD capacity than the HP 40GB, UATA 100, 7200 rpm (120 GB vs 40 GB). The HP 40GB, UATA 100, 7200 rpm has 1,800 RPM more HDD speed than the Acer 120GB 2.5” 5400rpm hard drive (7200 RPM vs 5400 RPM). The HP 40GB, UATA 100, 7200 rpm has 1" more HDD size than the Acer 120GB 2.5” 5400rpm hard drive (3.5" vs 2.5"). Interface: Serial ATA on the Acer 120GB 2.5” 5400rpm hard drive, Ultra-ATA/100 on the HP 40GB, UATA 100, 7200 rpm. Operating voltage: 5 V on the Acer 120GB 2.5” 5400rpm hard drive, 5 / 12 V on the HP 40GB, UATA 100, 7200 rpm.

HDD capacity
- 120GB 2.5” 5400rpm hard drive:120 GB
- 40GB, UATA 100, 7200 rpm:40 GB
HDD speed
- 120GB 2.5” 5400rpm hard drive:5400 RPM
- 40GB, UATA 100, 7200 rpm:7200 RPM
HDD size
- 120GB 2.5” 5400rpm hard drive:2.5"
- 40GB, UATA 100, 7200 rpm:3.5"
Interface
- 120GB 2.5” 5400rpm hard drive:Serial ATA
- 40GB, UATA 100, 7200 rpm:Ultra-ATA/100
Operating voltage
- 120GB 2.5” 5400rpm hard drive:5 V
- 40GB, UATA 100, 7200 rpm:5 / 12 V

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5” 5400rpm hard drive, 40GB, UATA 100, 7200 rpm
10 specifications	A Acer 120GB 2.5” 5400rpm hard drive View product	B HP 40GB, UATA 100, 7200 rpm View product
Features4 differ
HDD capacityDiffers	120 GB	40 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Serial ATA	Ultra-ATA/100
Storage drive buffer sizeKnown for one	8 MB	Unknown — not stated by the source
TypeKnown for one	Unknown — not stated by the source	HDD
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Weight & dimensionsidentical
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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