Product comparison · 2 internal hard drives

HP J3H78AV internal hard drive vs Seagate Enterprise ST900MM0088 internal hard drive

12specifications compared
10differ
2identical
18known for one product only

Key differences

The Seagate Enterprise ST900MM0088 internal hard drive has 2,800 RPM more HDD speed than the HP J3H78AV internal hard drive (10000 RPM vs 7200 RPM). The HP J3H78AV internal hard drive has 1" more HDD size than the Seagate Enterprise ST900MM0088 internal hard drive (3.5" vs 2.5"). The Seagate Enterprise ST900MM0088 internal hard drive has 64 MB more storage drive buffer size than the HP J3H78AV internal hard drive (128 MB vs 64 MB). HDD capacity: 1 TB on the HP J3H78AV internal hard drive, 900 GB on the Seagate Enterprise ST900MM0088 internal hard drive. Interface: Serial ATA III on the HP J3H78AV internal hard drive, SAS on the Seagate Enterprise ST900MM0088 internal hard drive.

HDD capacity
- J3H78AV internal hard drive:1 TB
- Enterprise ST900MM0088 internal hard drive:900 GB
HDD speed
- J3H78AV internal hard drive:7200 RPM
- Enterprise ST900MM0088 internal hard drive:10000 RPM
HDD size
- J3H78AV internal hard drive:3.5"
- Enterprise ST900MM0088 internal hard drive:2.5"
Interface
- J3H78AV internal hard drive:Serial ATA III
- Enterprise ST900MM0088 internal hard drive:SAS
Type
- J3H78AV internal hard drive:HDD
- Enterprise ST900MM0088 internal hard drive:Hybrid-HDD
Storage drive buffer size
- J3H78AV internal hard drive:64 MB
- Enterprise ST900MM0088 internal hard drive:128 MB
HDD interface transfer rate
- J3H78AV internal hard drive:6 Gbit/s
- Enterprise ST900MM0088 internal hard drive:12 Gbit/s
Operating voltage
- J3H78AV internal hard drive:5 / 12 V
- Enterprise ST900MM0088 internal hard drive:5 V

Side by side

Differences highlightedShow differences only

Comparison of J3H78AV, ST900MM0088
30 specifications	A HP J3H78AV internal hard drive Model J3H78AV View product	B Seagate Enterprise ST900MM0088 internal hard drive Model ST900MM0088 View product
Features7 differ
HDD capacityDiffers	1 TB	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	64 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	4096
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
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

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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