Product comparison · 2 internal hard drives

Seagate 450GB 3.5 vs Seagate Enterprise ST900MM0128-40PK internal hard drive

22specifications compared
17differ
5identical
11known for one product only

Key differences

HDD capacity
- 450GB 3.5:450 GB
- Enterprise ST900MM0128-40PK internal hard drive:900 GB
HDD speed
- 450GB 3.5:15000 RPM
- Enterprise ST900MM0128-40PK internal hard drive:10000 RPM
HDD size
- 450GB 3.5:3.5"
- Enterprise ST900MM0128-40PK internal hard drive:2.5"
Type
- 450GB 3.5:HDD
- Enterprise ST900MM0128-40PK internal hard drive:Hybrid-HDD
Storage drive buffer size
- 450GB 3.5:16 MB
- Enterprise ST900MM0128-40PK internal hard drive:128 MB
Average latency
- 450GB 3.5:2 ms
- Enterprise ST900MM0128-40PK internal hard drive:2.9 ms
Power consumption (typical)
- 450GB 3.5:14.6 W
- Enterprise ST900MM0128-40PK internal hard drive:7.12 W
Power consumption (idle)
- 450GB 3.5:10.1 W
- Enterprise ST900MM0128-40PK internal hard drive:3.88 W

Side by side

Differences highlightedShow differences only

Comparison of 450GB 3.5, ST900MM0128-40PK
33 specifications	A Seagate 450GB 3.5 View product	B Seagate Enterprise ST900MM0128-40PK internal hard drive Model ST900MM0128-40PK View product
Features6 differ
HDD capacityDiffers	450 GB	900 GB
HDD speedDiffers	15000 RPM	10000 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	SAS	SAS
TypeDiffers	HDD	Hybrid-HDD
Component for	Server/workstation	Server/workstation
Storage drive buffer sizeDiffers	16 MB	128 MB
Hybrid-HDD cache memoryKnown for one	Unknown — not stated by the source	32 GB
HDD interface transfer rateKnown for one	Unknown — not stated by the source	12 Gbit/s
HDD number of cylindersKnown for one	Unknown — not stated by the source	2
HDD number of headsKnown for one	Unknown — not stated by the source	4
Average latencyDiffers	2 ms	2.9 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Read seek timeKnown for one	3.4 ms	Unknown — not stated by the source
Write seek timeKnown for one	3.9 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1600000 h	Unknown — not stated by the source
Power3 differ
Power consumption (typical)Differs	14.6 W	7.12 W
Power consumption (idle)Differs	10.1 W	3.88 W
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	0.44 A
Operational conditions3 differ
Operating temperature (T-T)	5 - 55 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating vibrationDiffers	1 G	0.5 G
Non-operating vibration	3 G	3 G
Operating shockDiffers	60 G	40 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions4 differ
WidthDiffers	101.6 mm	70.1 mm
DepthDiffers	146.5 mm	100.5 mm
HeightDiffers	25.4 mm	15 mm
WeightDiffers	676 g	189 g
Packaging data1 differ
Quantity per packDiffers	1 pc(s)	40 pc(s)
Packaging contentidentical
Storage drive adapter includedKnown for one	No	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84717050	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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