Product comparison · 2 internal hard drives

Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk vs Seagate MOMENTUS 5400.2 100GB

12specifications compared
10differ
2identical
5known for one product only

Key differences

The Seagate MOMENTUS 5400.2 100GB has 60 GB more HDD capacity than the Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk (100 GB vs 40 GB). The Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk has 1" more HDD size than the Seagate MOMENTUS 5400.2 100GB (3.5" vs 2.5"). The Seagate MOMENTUS 5400.2 100GB has 6 MB more storage drive buffer size than the Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk (8 MB vs 2 MB). Interface: Ultra-ATA/133 on the Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk, Ultra-ATA/100 on the Seagate MOMENTUS 5400.2 100GB. Operating voltage: 5 / 12 V on the Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk, 5 V on the Seagate MOMENTUS 5400.2 100GB.

HDD capacity
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:40 GB
- MOMENTUS 5400.2 100GB:100 GB
HDD size
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:3.5"
- MOMENTUS 5400.2 100GB:2.5"
Interface
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:Ultra-ATA/133
- MOMENTUS 5400.2 100GB:Ultra-ATA/100
Storage drive buffer size
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:2 MB
- MOMENTUS 5400.2 100GB:8 MB
HDD number of heads
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:16
- MOMENTUS 5400.2 100GB:4
Average latency
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:5.5 ms
- MOMENTUS 5400.2 100GB:5.56 ms
Operating voltage
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:5 / 12 V
- MOMENTUS 5400.2 100GB:5 V
Operating temperature (T-T)
- K HDFireb3 40GBATA133 5400rpm 20pk bulk:5 - 60 °C
- MOMENTUS 5400.2 100GB:5 - 55 °C

Side by side

Differences highlightedShow differences only

Comparison of K HDFireb3 40GBATA133 5400rpm 20pk bulk, MOMENTUS 5400.2 100GB
17 specifications	A Seagate K HDFireb3 40GBATA133 5400rpm 20pk bulk View product	B Seagate MOMENTUS 5400.2 100GB View product
Features6 differ
HDD capacityDiffers	40 GB	100 GB
HDD speed	5400 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Ultra-ATA/133	Ultra-ATA/100
Component forKnown for one	Unknown — not stated by the source	Laptop
Storage drive buffer sizeDiffers	2 MB	8 MB
HDD number of headsDiffers	16	4
Read seek timeKnown for one	Unknown — not stated by the source	12.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	12.5 ms
Average latencyDiffers	5.5 ms	5.56 ms
Average seek timeKnown for one	12 ms	Unknown — not stated by the source
Power1 differ
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions1 differ
Operating temperature (T-T)Differs	5 - 60 °C	5 - 55 °C
Weight & dimensions1 differ
WeightDiffers	509 g	102 g
Other features1 differ
Dimensions (WxDxH)Differs	102 x 147 x 17.5 mm	69.85 x 100.2 x 9.5 mm
Internal	Yes	Yes
Power requirementsKnown for one	+5V, +12V	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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