Product comparison · 2 internal hard drives

HP J3H77AV internal hard drive vs Seagate Enterprise ST900MM0128 internal hard drive

11specifications compared
10differ
1identical
19known for one product only

Key differences

HDD capacity
- J3H77AV internal hard drive:500 GB
- Enterprise ST900MM0128 internal hard drive:900 GB
HDD speed
- J3H77AV internal hard drive:7200 RPM
- Enterprise ST900MM0128 internal hard drive:10000 RPM
HDD size
- J3H77AV internal hard drive:3.5"
- Enterprise ST900MM0128 internal hard drive:2.5"
Interface
- J3H77AV internal hard drive:Serial ATA III
- Enterprise ST900MM0128 internal hard drive:SAS
Type
- J3H77AV internal hard drive:HDD
- Enterprise ST900MM0128 internal hard drive:Hybrid-HDD
Storage drive buffer size
- J3H77AV internal hard drive:16 MB
- Enterprise ST900MM0128 internal hard drive:128 MB
HDD interface transfer rate
- J3H77AV internal hard drive:6 Gbit/s
- Enterprise ST900MM0128 internal hard drive:12 Gbit/s
Operating voltage
- J3H77AV internal hard drive:5 / 12 V
- Enterprise ST900MM0128 internal hard drive:5 V

Side by side

Differences highlightedShow differences only

Comparison of J3H77AV, ST900MM0128
30 specifications	A HP J3H77AV internal hard drive Model J3H77AV View product	B Seagate Enterprise ST900MM0128 internal hard drive Model ST900MM0128 View product
Features7 differ
HDD capacityDiffers	500 GB	900 GB
HDD speedDiffers	7200 RPM	10000 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA III	SAS
TypeDiffers	HDD	Hybrid-HDD
Component forKnown for one	Unknown — not stated by the source	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 rateDiffers	6 Gbit/s	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 latencyKnown for one	Unknown — not stated by the source	2.9 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Full stroke seek timeKnown for one	21 ms	Unknown — not stated by the source
Average seek timeKnown for one	11 ms	Unknown — not stated by the source
Power1 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	7.12 W
Power consumption (idle)Known for one	Unknown — not stated by the source	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 conditionsidentical
Operating temperature (T-T)	5 - 55 °C	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Operating shockKnown for one	Unknown — not stated by the source	40 G
Non-operating shockKnown for one	Unknown — not stated by the source	400 G
Weight & dimensions2 differ
WidthDiffers	101.7 mm	70.1 mm
DepthKnown for one	Unknown — not stated by the source	100.5 mm
HeightDiffers	25.4 mm	15 mm
WeightKnown for one	Unknown — not stated by the source	189 g
Packaging dataidentical
Quantity per packKnown for one	1 pc(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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